Sample records for flaring coal mining

  1. Coal Mining (Iowa)

    Broader source: Energy.gov [DOE]

    These sections describe procedures for coal exploration and extraction, as well as permitting requirements relating to surface and underground coal mining. These sections also address land...

  2. Indonesian coal mining

    SciTech Connect (OSTI)

    NONE

    2008-11-15T23:59:59.000Z

    The article examines the opportunities and challenges facing the Indonesian coal mining industry and how the coal producers, government and wider Indonesian society are working to overcome them. 2 figs., 1 tab.

  3. Coal Mining Regulations (Kentucky)

    Broader source: Energy.gov [DOE]

    Kentucky Administrative Regulation Title 405 chapters 1, 2, 3, 5, 7, 8, 10, 12, 16, 18 and 20 establish the laws governing coal mining in the state.

  4. Coal Mining Tax Credit (Arkansas)

    Broader source: Energy.gov [DOE]

    The Coal Mining Tax Credit provides an income or insurance premium tax credit of $2.00 per ton of coal mined, produced or extracted on each ton of coal mined in Arkansas in a tax year. An...

  5. Coal Mine Safety Act (Virginia)

    Broader source: Energy.gov [DOE]

    This Act is the primary legislation pertaining to coal mine safety in Virginia. It contains information on safety rules, safety standards and required certifications for mine workers, prohibited...

  6. Surface Coal Mining Regulations (Mississippi)

    Broader source: Energy.gov [DOE]

    The Surface Coal Mining Regulations are a combination of permitting requirements and environmental regulations that limit how, where and when coal can be mined. It protects lands that are under...

  7. Montana Coal Mining Code (Montana)

    Broader source: Energy.gov [DOE]

    The Department of Labor and Industry is authorized to adopt rules pertaining to safety standards for all coal mines in the state. The Code requires coal mine operators to make an accurate map or...

  8. Coal Mining on Pitching Seams

    E-Print Network [OSTI]

    Brown, George MacMillan

    1915-01-01T23:59:59.000Z

    . 1915* App r ov e d: Department of Mining Engineering* COAL MUTING ON PITCHING SEAMS A THESIS SUBMITTED TO THE FACULTY OP THE SCHOOL OP ENGINEERING OF THE UNIVERSITY OP KANSAS for THE DEGREE OF ENGINEER OF MINES BY GEORGE MACMILLAN BROWN 1915... PREFACE In the following dissertation on the subject of "Coal Mining in Pitching Beams" the writer desires to describe more particularly those methods of mining peculiar to coal mines in Oklahoma, with which he has been more or less familiar during...

  9. Arkansas Surface Coal Mining Reclamation Act (Arkansas)

    Broader source: Energy.gov [DOE]

    The Arkansas Surface Coal Mining Reclamation Act authorizes the state to develop, adopt, issue and amend rules and regulations pertaining to surface coal mining and reclamation operations. These...

  10. Surface Coal Mining Law (Missouri)

    Broader source: Energy.gov [DOE]

    This law aims to provide for the regulation of coal mining in order to minimize or prevent its adverse effects, protect the environment to the extent possible, protect landowner rights, and...

  11. Coal Mining Reclamation (North Dakota)

    Broader source: Energy.gov [DOE]

    The Reclamation Division of the Public Service Commission is tasked with administering the regulation of surface coal mining and reclamation. Specific regulations can be found in article 69-05.2 of...

  12. appalachian coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  13. Coal bunkers in underground mines

    SciTech Connect (OSTI)

    Polak, J.; Zegzulka, J. [VSB-Technical Univ., Ostrava (Czech Republic)

    1996-12-31T23:59:59.000Z

    In spite of the technical progress in the application of face technological equipment, the fluctuation of its output has been still considerable. A coal clearance system can be on one hand overloaded by production peaks and on the other hand its stoppages unfavorably influence production of faces. It has been proved that the most effective coal conveying system incorporates surge bunkers to eliminate the above mentioned problems. The surge bunkers have been used in the Czech mines since the middle of the sixties. There were 17 bunkers with an average capacity of 200 m{sup 3} in the biggest Czech coal mine basin OKD in 1967. Presently the number of bunkers has increased to 66 with a total capacity of 40,000 m{sup 3}. It represents the possibility of storing 56% of the daily OKD running of mine output. Two thirds of the number are gate bunkers with an average capacity of 540 m{sup 3} and the rest are skip ones with an average capacity of 740 m{sup 3}, situated at the shaft side.

  14. abandoned coal mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  15. australian coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  16. african coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  17. Coal conversion siting on coal mined lands: water quality issues

    SciTech Connect (OSTI)

    Triegel, E.K.

    1980-01-01T23:59:59.000Z

    The siting of new technology coal conversion facilities on land disturbed by coal mining results in both environmental benefits and unique water quality issues. Proximity to mining reduces transportation requirements and restores disrupted land to productive use. Uncertainties may exist, however, in both understanding the existing site environment and assessing the impact of the new technology. Oak Ridge National Laboratory is currently assessing the water-related impacts of proposed coal conversion facilities located in areas disturbed by surface and underground coal mining. Past mining practices, leaving highly permeable and unstable fill, may affect the design and quality of data from monitoring programs. Current mining and dewatering, or past underground mining may alter groundwater or surface water flow patterns or affect solid waste disposal stability. Potential acid-forming material influences the siting of waste disposal areas and the design of grading operations. These and other problems are considered in relation to the uncertainties and potentially unique problems inherent in developing new technologies.

  18. Coal Mining Regulatory and Reclamation Act (Massachusetts)

    Broader source: Energy.gov [DOE]

    These regulations aim to ensure that any coal mining or extraction will be conducted in a manner that will not significantly damage the environment or area of land affected. The Department of...

  19. Injury experience in coal mining, 1991

    SciTech Connect (OSTI)

    Not Available

    1991-12-31T23:59:59.000Z

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of coal mining in the United States for 1991. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and anthracite or bituminous coal. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison between coal mining and the metal and nonmetal mineral mining industries, summary reference tabulations are included at the end of both the operator and the contractor sections of this report. Data used in compiling this report were reported by operators of coal mines and preparation plants on a mandatory basis as required under the Federal Mine Safety and Health Act of 1977, Public Law 91-173,as amended by Public Law 95-164. Since January 1, 1978, operators of mines or preparation plants or both which are subject to the Act have been required under 30 CFR, Part 50, to submit reports of injuries, occupational illnesses, and related data.

  20. Remediation of Abandoned Mines Using Coal Combustion By-Products

    E-Print Network [OSTI]

    Aydilek, Ahmet

    . Maryland has about 450 coal mines out of which only 50 are active and about 150 mines produce AMD RafalkoRemediation of Abandoned Mines Using Coal Combustion By-Products Sowmya Bulusu1 ; Ahmet H. Aydilek that occurs when pyrite that is present in abandoned coal mines comes in contact with oxygen and water, which

  1. Rehabilitation of the international coal mines

    E-Print Network [OSTI]

    Cote?, Homer.

    different here than elsewhere, hut to describe, by simple mining methods, step by step the reopening of old abandoned mines from examination to successful operation of the property. TOPOGRAPHY • The Eagle Pass coal field is a small field, tri­ angular... shaped, outcropping in Maverick Co unty north­ west of Eagle Pass, Texas, from which town i t takes its name ana where al l of the mines are located. The greater part of the Eagle Pass coal bed l ies across the Rio Grande River in Mexico and has been...

  2. Mining vertical coal seams in France

    SciTech Connect (OSTI)

    Schneiderman, S.J.

    1981-05-01T23:59:59.000Z

    French coal miners in the Lorraine Basin coalfields of Charbonnages de France, work under extremely difficult mining conditions. The coal seams are located in two parallel anticlines dipping to the southwest. On the northwest flanks the coal dips at angles up to 40/sup 0/; on the southeast flanks the coal dips as steep as 90/sup 0/. In addition to the problems associated with steeply dipping coal seams, the coal is often more than 3 meters (10 feet) thick, thus contributing the additional problems that are associated with thick seams. A cut-and-fill mining method is used and production of up to 400 tons per day for a three-shift working face has been achieved. The cut-and-fill mining method employed at Puit Reumaux, rising horizontal rooms with hydraulic stowing, is used in areas of the mine where seam dips exceed 45/sup 0/ and where seam thickness is from 2 to 5 meters (6.5 to 16.5 feet). Hydraulic stowing has many advantages for the Merlebach mine: The coalis located under urbanized areas and is also covered by water-bearing strata with hydraulic sand stowing there is little subsidence, so disturbances to the surface and the aquiferous zones are minimized. Hydraulic sand stowing also helps prevent eating and combustion.

  3. Virginia Coal Surface Mining Control and Reclamation Act (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation implements the federal Surface Mining Control and Reclamation Act and establishes a statewide regulatory program for reclamation following coal surface mining activities. The...

  4. Texas Surface Coal Mining and Reclamation Act (Texas)

    Broader source: Energy.gov [DOE]

    The Railroad Commission of Texas regulates all surface mining activities for the extraction of coal. The Commission acts with the authority of the Texas Surface Coal Mining and Reclamation Act,...

  5. Underground Coal Mine Monitoring with Wireless Sensor Networks

    E-Print Network [OSTI]

    Liu, Yunhao

    10 Underground Coal Mine Monitoring with Wireless Sensor Networks MO LI and YUNHAO LIU Hong Kong University of Science and Technology Environment monitoring in coal mines is an important application queries under instable circumstances. A prototype is deployed with 27 mica2 motes in a real coal mine. We

  6. Coal mine ground control. 3rd ed.

    SciTech Connect (OSTI)

    Peng, S.S.

    2008-09-15T23:59:59.000Z

    The third edition not only completely revises and updates the original subject areas, but also is broadened to include a number of new topics such as high horizontal stresses, computer modeling, and highwall stability. The subject areas covered in this book define the current field of coal mine ground control, except for the recently emerging topic of mine seals and some conventional subjects such as coal/rock cutting and impoundment dams. It contains 1,134 references from all published sources, and archived since 1876.

  7. 1 INTRODUCTION Appalachian coal recovered during mining fre-

    E-Print Network [OSTI]

    of Appalachian underground coal mining (Newman 2003). Storage of coal processing waste is limited to above ground- ground room-and-pillar or longwall coal production do not allow for the separation of waste during coal. Such an analysis requires the ability to predict potential surface ground movements, both vertical (i

  8. NPDES Rule for Coal Mining Facilities (West Virginia)

    Broader source: Energy.gov [DOE]

    This rule establishes requirements implementing the powers, duties, and responsibilities of State's Water Pollution Control Act with respect to all coal mines, preparation plants and all refuse and...

  9. Water Management Plans for Surface Coal Mining Operations (North Dakota)

    Broader source: Energy.gov [DOE]

    A water management plan is required for all surface coal mining operations. This plan must be submitted to the State Engineer of the State Water Commission at the same time a surface mining permit...

  10. Colliers in Corsets? Uncovering Stark County's Nineteenth-Century Coal Mining Women

    E-Print Network [OSTI]

    Sampson, Jason

    2012-01-01T23:59:59.000Z

    notion of family labor that persisted in the coal mines. InAmerican women first entered the coal mines en masse, theyCounty’s Nineteenth-Century Coal Mining Women According to

  11. Cost comparison of selected US and South African coal mines

    SciTech Connect (OSTI)

    Not Available

    1990-04-01T23:59:59.000Z

    The report on the South African coal industry is the fourth in a series of studies on coal exporting countries requested by the House Appropriations Committee. The committee requested that the basic differences in mining costs for U.S. and foreign mines be identified, especially those costs incurred in complying with health, safety, and environmental regulations. Basic costs in extracting raw coal are analyzed for two mining methods -- underground conventional mining and open-pit operations. In the report there is also a limited analysis of the relative market competitiveness of selected South African and U.S. steam coal mines in electric utility markets in Japan, Western Europe, and the U.S. Gulf Coast area. The South African Government prohibits the exports of hard metallurgical coal.

  12. Roof control strategies for underground coal mines

    SciTech Connect (OSTI)

    Smith, W.C. (Bureau of Mines, Denver, CO (United States))

    1993-01-01T23:59:59.000Z

    Roof support, an important aspect of ground control, involves maintaining roof competency to ensure a safe and efficient mining environment. Wide variability in rock quality and stress distributions requires a systematic approach to roof support design that satisfies specific goals. The success of past roof support in reducing the incidence of roof falls has been primarily attributed to safer roof bolting practices. However, roof falls continue to be the number one occupational hazard in underground coal mines. This US Bureau of Mines report presents a general overview of roof bolting and other roof support methods used in the United States. Characteristics of bad roof and associated roof failure theories are briefly presented as background to roof support. Methods of detecting and monitoring roof behavior and/or bolt performance provide essential feedback on roof support requirements. A discussion follows on roof bolt design that assimilates roof and support parameters into useful equations or nomographs to help decide what bolt types to use and how they should be installed under different roof conditions. 35 refs., 8 figs.

  13. Characterization of seven United States coal regions. The development of optimal terrace pit coal mining systems

    SciTech Connect (OSTI)

    Wimer, R.L.; Adams, M.A.; Jurich, D.M.

    1981-02-01T23:59:59.000Z

    This report characterizes seven United State coal regions in the Northern Great Plains, Rocky Mountain, Interior, and Gulf Coast coal provinces. Descriptions include those of the Fort Union, Powder River, Green River, Four Corners, Lower Missouri, Illinois Basin, and Texas Gulf coal resource regions. The resource characterizations describe geologic, geographic, hydrologic, environmental and climatological conditions of each region, coal ranks and qualities, extent of reserves, reclamation requirements, and current mining activities. The report was compiled as a basis for the development of hypothetical coal mining situations for comparison of conventional and terrace pit surface mining methods, under contract to the Department of Energy, Contract No. DE-AC01-79ET10023, entitled The Development of Optimal Terrace Pit Coal Mining Systems.

  14. The Economic Impact of Coal Mining in New Mexico

    SciTech Connect (OSTI)

    Peach, James; Starbuck, C.

    2009-06-01T23:59:59.000Z

    The economic impact of coal mining in New Mexico is examined in this report. The analysis is based on economic multipliers derived from an input-output model of the New Mexico economy. The direct, indirect, and induced impacts of coal mining in New Mexico are presented in terms of output, value added, employment, and labor income for calendar year 2007. Tax, rental, and royalty income to the State of New Mexico are also presented. Historical coal production, reserves, and price data are also presented and discussed. The impacts of coal-fired electricity generation will be examined in a separate report.

  15. Groundwater Protection Rules Coal Mining Operations (West Virginia)

    Broader source: Energy.gov [DOE]

    These rules establish a series of practices for the protection of groundwater which are to be followed by any person who conducts coal mining operations subject to the provisions of West Virginia...

  16. Capture and Use of Coal Mine Ventilation Air Methane

    SciTech Connect (OSTI)

    Deborah Kosmack

    2008-10-31T23:59:59.000Z

    CONSOL Energy Inc., in conjunction with MEGTEC Systems, Inc., and the U.S. Department of Energy with the U.S. Environmental Protection Agency, designed, built, and operated a commercial-size thermal flow reversal reactor (TFRR) to evaluate its suitability to oxidize coal mine ventilation air methane (VAM). Coal mining, and particularly coal mine ventilation air, is a major source of anthropogenic methane emissions, a greenhouse gas. Ventilation air volumes are large and the concentration of methane in the ventilation air is low; thus making it difficult to use or abate these emissions. This test program was conducted with simulated coal mine VAM in advance of deploying the technology on active coal mine ventilation fans. The demonstration project team installed and operated a 30,000 cfm MEGTEC VOCSIDIZER oxidation system on an inactive coal mine in West Liberty, WV. The performance of the unit was monitored and evaluated during months of unmanned operation at mostly constant conditions. The operating and maintenance history and how it impacts the implementation of the technology on mine fans were investigated. Emission tests showed very low levels of all criteria pollutants at the stack. Parametric studies showed that the equipment can successfully operate at the design specification limits. The results verified the ability of the TFRR to oxidize {ge}95% of the low and variable concentration of methane in the ventilation air. This technology provides new opportunities to reduce greenhouse gas emissions by the reduction of methane emissions from coal mine ventilation air. A large commercial-size installation (180,000 cfm) on a single typical mine ventilation bleeder fan would reduce methane emissions by 11,000 to 22,100 short tons per year (the equivalent of 183,000 to 366,000 metric tonnes carbon dioxide).

  17. 87th regular meeting of the Rocky Mountain Coal Mining Institute: Proceedings

    SciTech Connect (OSTI)

    Finnie, D.G. (ed.)

    1991-01-01T23:59:59.000Z

    Eleven papers are included in these proceedings. Topics include management of coal mining operations, improving mine health and safety, new technologies for longwall mining, coal haulage, coal drying, a demonstration of the LFC process, and state of the art in mining automation. All eleven papers have been processed for inclusion on the data base.

  18. Gas Migration from Closed Coal Mines to the Surface RISK ASSESSMENT METHODOLOGY AND PREVENTION MEANS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Gas Migration from Closed Coal Mines to the Surface RISK ASSESSMENT METHODOLOGY AND PREVENTION to the surface is especially significant in the context of coal mines. This is because mine gas can migrate of the scheduled closure of all coal mining operations in France, INERIS has drawn up, at the request of national

  19. Analysis of seismic waves generated by surface blasting at Indiana coal mines

    E-Print Network [OSTI]

    Polly, David

    Analysis of seismic waves generated by surface blasting at Indiana coal mines A project pursuant is to investigate the characteristics of mine blast seismic waves in southern Indiana. Coal mines are prevalent blasting) and coal mines (surface blasting) to gain new understanding of seismic wave propagation, ground

  20. Geologic structures that affect coal-mine roof stability

    SciTech Connect (OSTI)

    Chase, F.E. (Bureau of Mines, Pittsburgh, PA (United States))

    1991-08-01T23:59:59.000Z

    The US Bureau of Mines has investigated several geologic structures that plague underground coal mining. These structures have caused numerous roof falls and, consequently, many miners have been hurt or fatally injured. Hazardous geologic anomalies that can be encountered in the eastern and western US coal fields include slips, hill seams, slickensides, sedimentary dikes, kettlebottoms, and paleochannels. Slips occur throughout the United States and are high-angled fractures in the roof rock. Typically, the rock adjacent to slips is highly slickensided and striated. Hill seams are weathered fracture zones and usually are found in areas where the overburden is shallow. Due to their nature and regional mining conditions, hill seams usually are found only in the southern Appalachian coal basin. Slickensides are lower angled planes of weakness found in coal-mine roof rock throughout the country. Slickensides usually are found in clusters and the adjacent rock is highly polished and striated. Sedimentary dikes (also clastic dikes and clay veins) are the remnants of ancient fissures that have been filled through sedimentary processes, Sedimentary dikes normally are found in coal basins that were slowly subsided. Kettlebottoms are the fossilized remains of trees that once grew in and above the swamp forest and generally are found in coal basins that were rapidly subsided. Paleochannels are the lithified remains of rivers and frequently are found in all coal basins except the Black Warrior.

  1. Preliminary report on LLNL mine seismicity deployment at the Twentymile Coal Mine

    SciTech Connect (OSTI)

    Walter, W.R.; Hunter, S.L.; Glenn, L.A.

    1996-01-01T23:59:59.000Z

    This report summarizes the preliminary results of a just completed experiment at the Twentymile Coal Mine, operated by the Cyprus Amax Coal Company near Oak Creek, CO. The purpose of the experiment was to obtain local and regional seismic data from roof caves associated with long-wall mining activities and to use this data to help determine the effectiveness with which these events can be discriminated from underground nuclear explosions under a future Comprehensive Test Ban Treaty.

  2. Stream periphyton and coal mining: Comparative Effects in the Elk Flathead Rivers of Southeastern British Columbia

    E-Print Network [OSTI]

    Renn, Susan C.P.

    Stream periphyton and coal mining: Comparative Effects in the Elk Flathead Rivers of Southeastern British Columbia Jessica Thompson and F.R. Hauer Coal mining can have a variety of effects on surrounding nutrients into surrounding streams. We examined the potential effects of coal mining by comparing adjacent

  3. Colliers in Corsets? Uncovering Stark County's Nineteenth-Century Coal Mining Women

    E-Print Network [OSTI]

    Sampson, Jason

    2012-01-01T23:59:59.000Z

    Nineteenth-Century Coal Mining Women According to the Uniteddid not enter underground mining until four decades ago. Theis that some women in the mining region of Stark County,

  4. Report Title: The Economic Impact of Coal Mining in New Mexico: 2008 Update Type of Report: Technical Report

    E-Print Network [OSTI]

    Johnson, Eric E.

    Report Title: The Economic Impact of Coal Mining in New Mexico: 2008 Update Type of Report 88003-8001 At Madrid Coal Mine, New Mexico by Carl Redin 1934. * *At Madrid Coal Mine, New Mexico 1934: The economic impact of coal mining in New Mexico is examined in this report. This report is an update

  5. Surface Coal Mining and Reclamation (Indiana)

    Broader source: Energy.gov [DOE]

    The Indiana Department of Natural Resources implements and enforces the federal Surface Mining Control and Reclamation Act of 1977, as well as a statewide program to protect society and the...

  6. BLACK THUNDER COAL MINE AND LOS ALAMOS NATIONAL LABORATORY EXPERIMENTAL STUDY

    E-Print Network [OSTI]

    BLACK THUNDER COAL MINE AND LOS ALAMOS NATIONAL LABORATORY EXPERIMENTAL STUDY OF SEISMIC ENERGY of Explosive Engineers, 2-5 Feb 97, Las Vegas, NV #12;BLACK THUNDER COAL MINE AND LOS ALAMOS NATIONAL and David Gross Thunder Basin Coal Company Post Office Box 406 Wright, Wyoming 82732 D. Craig Pearson

  7. Methane emission from flooded coal seams in abandoned mines, in the light of laboratory investigations

    E-Print Network [OSTI]

    Boyer, Edmond

    Methane emission from flooded coal seams in abandoned mines, in the light of laboratory of methane from flooded unexploited coal seams Field experience from the flooding operations of the abandoned gassy coal seams in abandoned mines. The tests included the following main stages: - Determining

  8. CO2 gas production understanding above a partly flooded coal post-mining area

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    - The Westphalian deposit is constituted by numerous exploited coal seams of different thicknesses. These seamsCO2 gas production understanding above a partly flooded coal post-mining area Candice Lagnya, a former coal mining area. To understand the origin of this production, a borehole of 90 meters deep

  9. Dendrochronological dating of coal mine workings at the Joggins Fossil Cliffs, Nova Scotia, Canada

    E-Print Network [OSTI]

    Walters, Bradley B.

    Dendrochronological dating of coal mine workings at the Joggins Fossil Cliffs, Nova Scotia, Canada,NovaScotia,wasoneofthefirstplacesinNorthAmericawherecoalwasmined.Dendrochronologicalmeth- ods were employed to date timber pit props preserved within relic coal mine workings on the closely with archival records of mining activity. Analysis of the 14 openings al- lows differentiation of two phases

  10. Virginia big-eared bats (Corynorhinus townsendii virginianus) roosting in abandoned coal mines in West Virginia

    SciTech Connect (OSTI)

    Johnson, J.B.; Edwards, J.W.; Wood, P.B. [West Virginia University, Morgantown, WV (US). Wildlife & Fisheries Resources Programme

    2005-07-01T23:59:59.000Z

    We surveyed bats at 36 abandoned coal mines during summer 2002 and 47 mines during fall 2002 at New River Gorge National River and Gauley River National Recreation Area, WV. During summer, we captured three federally endangered Virginia big-eared bats at two mine entrances, and 25 were captured at 12 mine entrances during fall. These represent the first documented captures of this species at coal mines in West Virginia. Future survey efforts conducted throughout the range of the Virginia big-eared bat should include abandoned coal mines.

  11. The Methane to Markets Coal Mine Methane Subcommittee meeting

    SciTech Connect (OSTI)

    NONE

    2008-07-01T23:59:59.000Z

    The presentations (overheads/viewgraphs) include: a report from the Administrative Support Group; strategy updates from Australia, India, Italy, Mexico, Nigeria, Poland and the USA; coal mine methane update and IEA's strategy and activities; the power of VAM - technology application update; the emissions trading market; the voluntary emissions reduction market - creating profitable CMM projects in the USA; an Italian perspective towards a zero emission strategies; and the wrap-up and summary.

  12. Presentations from the 1992 Coal Mining Impoundment Informational Meeting

    SciTech Connect (OSTI)

    Not Available

    1993-12-31T23:59:59.000Z

    On May 20 and 21, 1992, the MSHA Coal Mining Impoundment Informational Meeting was held at the National Mine Health and Safety Academy in Beckley, West Virginia. Fifteen presentations were given on key issues involved in the design and construction of dams associated with coal mining. The attendees were told that to improve the consistency among the plan reviewers, engineers from the Denver and Pittsburgh Technical Support Centers meet twice annually to discuss specific technical issues. It was soon discovered that the topics being discussed needed to be shared with anyone involved with coal waste dam design, construction, or inspection. The only way to accomplish that goal was through the issuance of Procedure Instruction Letters. The Letters present a consensus of engineering philosophy that could change over time. They do not present policy or carry the force of law. Currently, thirteen position papers have been disseminated and more will follow as the need arises. The individual paper were not even entered into the database.

  13. Safety in Mine Research EstablishmentPresent-day requirements for protection against fire in coal mines 

    E-Print Network [OSTI]

    Kushnarev, A.; Koslyuk, A.; Petrov, P.

    Analysis of a statistical data shows that, on an average, about 50% of the total underground emergencies occurring in coal mines in the USSR are due to fires. Great attention is, therefore, paid in our country to the problem of protection against...

  14. Cost to the Indian economy of mining coal

    SciTech Connect (OSTI)

    Bansal, N.K.; Bhave, A. [Indian Inst. of Technology, New Delhi (India). Centre of Energy Studies

    1995-03-01T23:59:59.000Z

    Like steel production, energy production is one of the significant parameters of stage of advancement of a developing economy. Availability of energy at the right price is vital for development. Coal is a primary resource of energy. The price of coal has been a very important parameter in the Indian economy. In the past 20 years coal has been marketed at administered prices. There has been a very complex mechanism at work for this purpose. There have been a lot of incentives given to thin industry. These, in fact, are tantamount to subsidies. The role of subsidies is well acknowledged and is considered quite useful to the economy. A detailed analysis by carefully studying the methodology of mining and delineating various stages in mining has been conducted, and the subsidies, which have traditionally not been quantified, have been calculated The impact of each parameter on the total subsidy has been studied to facilitate continuance or change in the subsidy by adopting a suitable strategy for coal pricing, as presently the considerations show unaccounted-for subsidies to be more than 70% of the price charged.

  15. Engineering and economical aspects of selection of coal conveying system in Czech underground mines

    SciTech Connect (OSTI)

    Polak, J.; Drozdek, K. [VSB-Technical Univ., Ostrava (Czech Republic)

    1995-12-31T23:59:59.000Z

    Coal, rock and material conveying and men-riding presently represent the critical activities of the mining process. Coal when cut out in the face is continually transported towards the expedition from a mine. The selection of coal conveying system from face to the skip complex or directly to the surface depends mainly on the quantity of coal conveyed, the hauling distance, the local and time concentration of production and the lifetime of a system. Possibilities of belt conveying and combined belt conveying and locomotive haulage, used in Czech coal mines, are analyzed from the point of view of technological advantages and disadvantages and compared according to the economic parameters.

  16. DETECTION OF EVENTS CAUSING PLUGGAGE OF A COAL-FIRED BOILER: A DATA MINING

    E-Print Network [OSTI]

    Kusiak, Andrew

    DETECTION OF EVENTS CAUSING PLUGGAGE OF A COAL-FIRED BOILER: A DATA MINING APPROACH ANDREW KUSIAK partitioning, parameter reduction, and data mining. Two inde- pendent data mining algorithms have been applied to detect both static and dynamic relationships among the process parameters. The multi-angle data mining

  17. RENFORCEMENT ET CONTROLE DE PAREMENTS DANS UNE MINE A CffiL OUVERT DE CHARBON REINFORCEMENT AND CONTROL OF FOOTWALL SLOPES IN AN OPEN PIT COAL MINE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    AND CONTROL OF FOOTWALL SLOPES IN AN OPEN PIT COAL MINE VERSTÄRKUNG UND KONTROLLE VON STOSSER IM KOHLETAGEBAU to exploit the stephanian coal.TheNorth West area ofthis open pit is composed of an overthrust fold. The coal

  18. Coal mining and the resource community cycle: A longitudinal assessment of the social impacts of the Coppabella coal mine

    SciTech Connect (OSTI)

    Lockie, S.; Franettovich, M.; Petkova-Timmer, V.; Rolfe, J.; Ivanova, G. [CQUniversity of Australia, Rockhampton, Qld. (Australia). Inst. of Health & Social Science Research

    2009-09-15T23:59:59.000Z

    Two social impact assessment (SIA) studies of Central Queensland's Coppabella coal mine were undertaken in 2002-2003 and 2006-2007. As ex post studies of actual change, these provide a reference point for predictive assessments of proposed resource extraction projects at other sites, while the longitudinal element added by the second study illustrates how impacts associated with one mine may vary over time due to changing economic and social conditions. It was found that the traditional coupling of local economic vitality and community development to the life cycle of resource projects - the resource community cycle - was mediated by labour recruitment and social infrastructure policies that reduced the emphasis on localised employment and investment strategies. and by the cumulative impacts of multiple mining projects within relative proximity to each other. The resource community cycle was accelerated and local communities forced to consider ways of attracting secondary investment and/or alternative industries early in the operational life of the Coppabella mine in order to secure significant economic benefits and to guard against the erosion of social capital and the ability to cope with future downturns in the mining sector.

  19. Underground coal mining is an industry well suited for robotic automation. Human operators are severely hampered in

    E-Print Network [OSTI]

    Stentz, Tony

    Abstract Underground coal mining is an industry well suited for robotic automation. Human operators approach meets the requirements for cutting straight entries and mining the proper amount of coal per cycle. Introduction The mining of soft materials, such as coal, is a large industry. Worldwide, a total of 435 million

  20. Defining manganese(II) removal processes in passive coal mine drainage treatment systems through laboratory incubation experiments

    E-Print Network [OSTI]

    Burgos, William

    - trations. At operating coal mines, the most commonly used ``active treatment'' method to remove MnDefining manganese(II) removal processes in passive coal mine drainage treatment systems through for the passive removal of Mn(II) from coal mine drainage (CMD). Aqueous Mn(II) is removed via oxidative

  1. Report Title: The Economic Impact of Coal Mining in New Mexico Type of Report: Final Technical Report

    E-Print Network [OSTI]

    Johnson, Eric E.

    Report Title: The Economic Impact of Coal Mining in New Mexico Type of Report: Final Technical The economic impact of coal mining in New Mexico is examined in this report. The analysis is based on economic impacts of coal mining in New Mexico are presented in terms of output, value added, employment, and labor

  2. Site-specific study on stabilization of acid-generating mine tailings using coal fly ash

    SciTech Connect (OSTI)

    Shang, J.Q.; Wang, H.L.; Kovac, V.; Fyfe, J. [University of Western Ontario, London, ON (Canada). Dept. of Civil & Environmental Engineering

    2006-03-15T23:59:59.000Z

    A site-specific study on stabilizing acid-generating mine tailings from Sudbury Mine using a coal fly ash from Nanticoke Generating Station is presented in this paper. The objective of the study is to evaluate the feasibility of codisposal of the fly ash and mine tailings to reduce environmental impacts of Sudbury tailings disposal sites. The study includes three phases, i.e., characterization of the mine tailings, and coal fly ash, oxidation tests on the mine tailings and kinetic column permeation tests. The results of the experiments indicate that when permeated with acid mine drainage, the hydraulic conductivity of Nanticoke coal fly ash decreased more than three orders of magnitude (from 1 x 10{sup -6} to 1 x 10{sup -9} cm/s), mainly due to chemical reactions between the ash solids and acid mine drainage. Furthermore, the hydraulic gradient required for acid mine drainage to break through the coal fly ash is increased up to ten times (from 17 to 150) as compared with that for water. The results also show that the leachate from coal fly ash neutralizes the acidic pore fluid of mine tailings. The concentrations of trace elements in effluents from all kinetic column permeation tests indicated that coplacement of coal fly ash with mine tailings has the benefit of immobilizing trace elements, especially heavy metals. All regulated element concentrations from effluent during testing are well below the leachate quality criteria set by the local regulatory authority.

  3. Coal-Mac, Inc. Phoenix No. 1 mine provides wildlife haven. 2007 Wildlife West Virginia Award

    SciTech Connect (OSTI)

    Skinner, A.

    2007-07-15T23:59:59.000Z

    Coal Mac, Inc.'s Harless Wood Industrial Park off Holden 22 Mines Road in Logan Country, West Virginia is an award-winning reclamation site in the mountains frequented by geese, wild turkey, deer and black bears. Orchard grass and rye is a temporary cover for the timothy, clover and other seedlings. The area was mined several years ago. Some 40,000-50,000 tons of coal per month are surfaced mined with the current permit that takes in 1,500-2,000 acres. After removing the coal, valleys are backfilled as part of the mining and reclamation plan. 10 photos.

  4. Selenium Bioaccumulation in Stocked Fish as an Indicator of Fishery Potential in Pit Lakes on Reclaimed Coal Mines

    E-Print Network [OSTI]

    Hontela, Alice

    on Reclaimed Coal Mines in Alberta, Canada L. L. Miller · J. B. Rasmussen · V. P. Palace · G. Sterling · A to selenium (Se) and other metals and metalloids in pit lakes formed by open pit coal mining in Tertiary (thermal coal) and in Cretaceous (metallurgical coal) bedrock. Juvenile hatchery rainbow trout

  5. PREVENTTVE FACILITIES AND EMERGENCY OPERATIONS IN CASE OFFIRES IN CdF COAL MINES

    E-Print Network [OSTI]

    Boyer, Edmond

    PREVENTTVE FACILITIES AND EMERGENCY OPERATIONS IN CASE OFFIRES IN CdF COAL MINES J.P. AMARTIN HJSJL a stricl methodology. It has been possjble then to resume coal winning, which has cor.tmued until groups of over ten seams of coal, separated by a conglomerate bed nearly 200 metres thick (figure l

  6. Demonstration of coal mine illumination systems. Open file report (final) October 1977-June 1980

    SciTech Connect (OSTI)

    Szpak, A.D.; Hahn, W.F.; Skinner, C.S.

    1981-01-01T23:59:59.000Z

    The purpose of this program was to demonstrate the feasibility of illuminating various types of underground coal mining machinery as required by the Federal Coal Mine Illumination Standards Part 75.1719 to 75.1719-4 Code of Federal Regulations Title 30. Nine various machines were illuminated and the illumination systems were evaluated for a 3-month period. Factors evaluted were ease of implementation, reliability, ease of maintenance, acceptance by mine workers and operations, illumination degradation, and durability.

  7. Selenium transformation in coal mine spoils: Its environmental impact assessment

    SciTech Connect (OSTI)

    Harness, J.; Atalay, A.; Koll, K.J.; Zhang, H.; Maggon, D.

    1991-12-31T23:59:59.000Z

    The objective of this program was to conduct an environmental impact assessment study for selenium from coal mine spoils. The use of in-situ lysimetry to predict selenium speciation, transformation, and mobility under natural conditions was evaluated. The scope of the study was to construct and test field-scale lysimeter and laboratory mini-column to assess mobility and speciation of selenium in coal mine overburden and soil systems; to conduct soil and groundwater sampling throughout the state of Oklahoma for an overall environmental impact assessment of selenium; and to conduct an in-depth literature review on the solubility, speciation, mobility, and toxicity of selenium from various sources. Groundwater and surface soil samples were also collected from each county in Oklahoma. Data collected from the lysimeter study indicated that selenium in the overburden of the abandoned mine site was mainly found in the selenite form. The amount of selenite found was too low and immobile to be of concern to the environment. The spoil had equilibrated long enough (over 50 years) that most of the soluble forms of selenium have already been lost. Examination of the overburden indicated the presence of pyrite crystals that precipitated over time. The laboratory mini-column study indicated that selenite is quite immobile and remained on the overburden material even after leaching with dilute acid. Data from groundwater samples indicated that based on the current permissible level for selenium in groundwater (0.01 mg Se/L), Oklahoma groundwater is widely contaminated with the element. However, according to the new regulation (0.05 mg Se/L), which is to be promulgated in 1992, only 9 of the 77 counties in the state exceed the limit.

  8. Impact of mine closure and access facilities on gas emissions from old mine workings to surface: examples of French iron and coal

    E-Print Network [OSTI]

    Boyer, Edmond

    : examples of French iron and coal Lorraine basins C. Lagny, R. Salmon, Z. Pokryszka and S. Lafortune (INERIS of mine shafts located in the iron Lorraine basin, in the Lorraine and in North-East coal basins are quite in mine workings but gas entrance and exit are allowed. Coal shafts are secured and can be equipped

  9. Relations between health indicators and residential proximity to coal mining in West Virginia

    SciTech Connect (OSTI)

    Hendryx, M.; Ahern, M.M. [West Virginia University, Morgantown, WV (United States). Dept. for Community Medicine

    2008-04-15T23:59:59.000Z

    We used data from a survey of 16493 West Virginians merged with county-level coal production and other covariates to investigate the relations between health indicators and residential proximity to coal mining. Results of hierarchical analyses indicated that high levels of coal production were associated with worse adjusted health status and with higher rates of cardiopulmonary disease, chronic obstructive pulmonary disease, hypertension, lung disease, and kidney disease. Research is recommended to ascertain the mechanisms, magnitude, and consequences of a community coal-mining exposure effect.

  10. INTEGRATED POWER GENERATION SYSTEMS FOR COAL MINE WASTE METHANE UTILIZATION

    SciTech Connect (OSTI)

    Peet M. Soot; Dale R. Jesse; Michael E. Smith

    2005-08-01T23:59:59.000Z

    An integrated system to utilize the waste coal mine methane (CMM) at the Federal No. 2 Coal Mine in West Virginia was designed and built. The system includes power generation, using internal combustion engines, along with gas processing equipment to upgrade sub-quality waste methane to pipeline quality standards. The power generation has a nominal capacity of 1,200 kw and the gas processing system can treat about 1 million cubic feet per day (1 MMCFD) of gas. The gas processing is based on the Northwest Fuel Development, Inc. (NW Fuel) proprietary continuous pressure swing adsorption (CPSA) process that can remove nitrogen from CMM streams. The two major components of the integrated system are synergistic. The byproduct gas stream from the gas processing equipment can be used as fuel for the power generating equipment. In return, the power generating equipment provides the nominal power requirements of the gas processing equipment. This Phase III effort followed Phase I, which was comprised of a feasibility study for the project, and Phase II, where the final design for the commercial-scale demonstration was completed. The fact that NW Fuel is desirous of continuing to operate the equipment on a commercial basis provides the validation for having advanced the project through all of these phases. The limitation experienced by the project during Phase III was that the CMM available to operate the CPSA system on a commercial basis was not of sufficiently high quality. NW Fuel's CPSA process is limited in its applicability, requiring a relatively high quality of gas as the feed to the process. The CPSA process was demonstrated during Phase III for a limited time, during which the processing capabilities met the expected results, but the process was never capable of providing pipeline quality gas from the available low quality CMM. The NW Fuel CPSA process is a low-cost ''polishing unit'' capable of removing a few percent nitrogen. It was never intended to process CMM streams containing high levels of nitrogen, as is now the case at the Federal No.2 Mine. Even lacking the CPSA pipeline delivery demonstration, the project was successful in laying the groundwork for future commercial applications of the integrated system. This operation can still provide a guide for other coal mines which need options for utilization of their methane resources. The designed system can be used as a complete template, or individual components of the system can be segregated and utilized separately at other mines. The use of the CMM not only provides an energy fuel from an otherwise wasted resource, but it also yields an environmental benefit by reducing greenhouse gas emissions. The methane has twenty times the greenhouse effect as compared to carbon dioxide, which the combustion of the methane generates. The net greenhouse gas emission mitigation is substantial.

  11. Ground penetrating radar technique to locate coal mining related features: case studies in Texas 

    E-Print Network [OSTI]

    Save, Neelambari R

    2006-04-12T23:59:59.000Z

    The goal of this research project is to identify the efficacy of the ground penetrating radar (GPR) technique in locating underground coal mine related subsidence features at Malakoff and Bastrop, Texas. The work at Malakoff ...

  12. Ground penetrating radar technique to locate coal mining related features: case studies in Texas

    E-Print Network [OSTI]

    Save, Neelambari R

    2006-04-12T23:59:59.000Z

    The goal of this research project is to identify the efficacy of the ground penetrating radar (GPR) technique in locating underground coal mine related subsidence features at Malakoff and Bastrop, Texas. The work at Malakoff has been done...

  13. Higher coronary heart disease and heart attack morbidity in Appalachian coal mining regions

    SciTech Connect (OSTI)

    Hendryx, M.; Zullig, K.J. [West Virginia University, Morgantown, WV (United States). Dept. of Community Medicine

    2009-11-15T23:59:59.000Z

    This study analyzes the U.S. 2006 Behavioral Risk Factor Surveillance System survey data (N = 235,783) to test whether self-reported cardiovascular disease rates are higher in Appalachian coal mining counties compared to other counties after control for other risks. Dependent variables include self-reported measures of ever (1) being diagnosed with cardiovascular disease (CVD) or with a specific form of CVD including (2) stroke, (3) heart attack, or (4) angina or coronary heart disease (CHD). Independent variables included coal mining, smoking, BMI, drinking, physician supply, diabetes co-morbidity, age, race/ethnicity, education, income, and others. SUDAAN Multilog models were estimated, and odds ratios tested for coal mining effects. After control for covariates, people in Appalachian coal mining areas reported significantly higher risk of CVD (OR = 1.22, 95% CI = 1.14-1.30), angina or CHO (OR = 1.29, 95% C1 = 1.19-1.39) and heart attack (OR = 1.19, 95% C1 = 1.10-1.30). Effects were present for both men and women. Cardiovascular diseases have been linked to both air and water contamination in ways consistent with toxicants found in coal and coal processing. Future research is indicated to assess air and water quality in coal mining communities in Appalachia, with corresponding environmental programs and standards established as indicated.

  14. Study of the properties of mine waste in the midwestern coal fields. Phase I report

    SciTech Connect (OSTI)

    None

    1980-07-04T23:59:59.000Z

    In an effort to assist the coal industry in complying with the applicable regulations, to design safe and environmentally acceptable disposal systems, and to encourage secondary use of coal mine waste, the US Department of Energy has initiated research programs to develop coal mine waste disposal and use technology. This study of the properties of mine wastes in the Midwestern coal fields has been limited to the waste materials obtained from underground coal mines and preparation plants attached to both underground and surface mines. The program has been divided into two phases. In Phase I, the 20 most important properties relevant to safe disposal, reclamation, underground disposal, and secondary uses have been identified. An inventory of the significant waste disposal sites in the Midwestern coal fields has been prepared. The site locations have been plotted on USGS maps. Estimates of coal production and coal mine waste production during the next 2 decades have been prepared and are presented in this report. Also, all available information obtained from a search of existing literature on physical and chemical properties, including analysis results of the general runoff from the refuse disposal areas, has been collected and is presented. In order to fill the gaps in information, 20 sites have been identified for drilling and sampling to determine the various physical and chemical properties. They have been selected on the basis of the distribution and quantity of waste at the existing locations (both abandoned and active), the future trends in production and likely locations of waste disposal areas, their geographical and geological distribution, and ease of accessibility for drilling and sampling.

  15. Atmospheric methane flux from coals - preliminary investigation of coal mines and geologic structures in the Black Warrior Basin, Alabama

    SciTech Connect (OSTI)

    Clayton, J.L.; Leventhal, J.S.; Rice, D.D. (Geological Survey, Denver, CO (United States)); Pashin, J.C. (Geological Survey of Alabama, Tuscaloosa, AL (United States)); Mosher, B.; Czepiel, P. (Univ. of New Hampshire, Durham, NH (United States))

    1993-01-01T23:59:59.000Z

    Methane is an important greenhouse gas whose concentration in the atmosphere is increasing. Although this increase in atmospheric methane is correlative with growth in human population and activities, the exact causes for the increase are not fully understood. Because of increasing energy demand, particularly in developing countries where population is increasing, coal production is likely to increase over the next few decades and this could further increase the flux of atmospheric methane. In addition, no data are currently available on methane flux from coalbeds as a result of natural processes such as leakage at outcrops, or along faults and fractures that could provide avenues for methane migration upward from coal at depth. To better understand the global methane cycle and the role of fossil fuels in methane emissions, field measurements of methane emissions are needed from coalbeds, from areas of active mining, from coalbed gas production, and from undisturbed coals. In this paper, we report results of field measurements of CH[sub 4] emissions from surface and underground mines, fault zones, and coreholes in the Black Warrior Basin, Alabama. Ventilation of underground mines in Mary Lee group coals (of economic usage) gave the highest methane emissions rates - about 71,480,000 m[sup 3]/yr (2.5 Bcf or billion cubic feet) from one ventilation shaft. In contrast, very low emissions occurred from active or abandoned coreholes and from Brookwood group coals (of economic usage) exposed by surface mining (about 81 m[sup 3]/yr (2.9 Mcf or thousand cubic feet)). Methane flux of as much as about 500 m[sup 3]/yr occurs from a small section of a normal fault and associated joints exposed at Bankhead Lock and Dam. The carbon isotopic composition of CH[sub 4] collected at the Bankhead Fault ([delta][sup 13]C -49.3 permil) indicates a coalbed origin. 50 refs., 15 figs., 4 tabs.

  16. Assessment of effective parameters on dilution using approximate reasoning methods in longwall mining method, Iran coal mines

    E-Print Network [OSTI]

    Owladeghaffari, H; Saeedi, G H R

    2008-01-01T23:59:59.000Z

    Approximately more than 90% of all coal production in Iranian underground mines is derived directly longwall mining method. Out of seam dilution is one of the essential problems in these mines. Therefore the dilution can impose the additional cost of mining and milling. As a result, recognition of the effective parameters on the dilution has a remarkable role in industry. In this way, this paper has analyzed the influence of 13 parameters (attributed variables) versus the decision attribute (dilution value), so that using two approximate reasoning methods, namely Rough Set Theory (RST) and Self Organizing Neuro- Fuzzy Inference System (SONFIS) the best rules on our collected data sets has been extracted. The other benefit of later methods is to predict new unknown cases. So, the reduced sets (reducts) by RST have been obtained. Therefore the emerged results by utilizing mentioned methods shows that the high sensitive variables are thickness of layer, length of stope, rate of advance, number of miners, type of...

  17. UNDERGROUNG PLACEMENT OF COAL PROCESSING WASTE AND COAL COMBUSTION BY-PRODUCTS BASED PASTE BACKFILL FOR ENHANCED MINING ECONOMICS

    SciTech Connect (OSTI)

    Y.P. Chugh; D. Biswas; D. Deb

    2002-06-01T23:59:59.000Z

    This project has successfully demonstrated that the extraction ratio in a room-and-pillar panel at an Illinois mine can be increased from the current value of approximately 56% to about 64%, with backfilling done from the surface upon completion of all mining activities. This was achieved without significant ground control problems due to the increased extraction ratio. The mined-out areas were backfilled from the surface with gob, coal combustion by-products (CCBs), and fine coal processing waste (FCPW)-based paste backfill containing 65%-70% solids to minimize short-term and long-term surface deformations risk. This concept has the potential to increase mine productivity, reduce mining costs, manage large volumes of CCBs beneficially, and improve the miner's health, safety, and environment. Two injection holes were drilled over the demonstration panel to inject the paste backfill. Backfilling was started on August 11, 1999 through the first borehole. About 9,293 tons of paste backfill were injected through this borehole with a maximum flow distance of 300-ft underground. On September 27, 2000, backfilling operation was resumed through the second borehole with a mixture of F ash and FBC ash. A high-speed auger mixer (new technology) was used to mix solids with water. About 6,000 tons of paste backfill were injected underground through this hole. Underground backfilling using the ''Groutnet'' flow model was simulated. Studies indicate that grout flow over 300-foot distance is possible. Approximately 13,000 tons of grout may be pumped through a single hole. The effect of backfilling on the stability of the mine workings was analyzed using SIUPANEL.3D computer program and further verified using finite element analysis techniques. Stiffness of the backfill mix is most critical for enhancing the stability of mine workings. Mine openings do not have to be completely backfilled to enhance their stability. Backfill height of about 50% of the seam height is adequate to minimize surface deformations. Freeman United Coal Company performed engineering economic evaluation studies for commercialization. They found that the costs for underground management at the Crown III mine would be slightly higher than surface management at this time. The developed technologies have commercial potential but each site must be analyzed on its merit. The Company maintains significant interest in commercializing the technology.

  18. Detection and monitoring of high stress concentration zones induced by coal mining using numerical and microseismic methods

    E-Print Network [OSTI]

    Boyer, Edmond

    1). In the zone investigated, the seams worked lie in two clusters: lower and upper of soft coal of the site The Irma coal seam is worked using the longwall caving method. The width of the working face2001-55 Detection and monitoring of high stress concentration zones induced by coal mining using

  19. Characterization of available coals from Illinois mines. Technical report, December 1, 1992--February 28, 1993

    SciTech Connect (OSTI)

    Demir, I.; Harvey, R.D.; Ruch, R.R.; Chaven, C.; Damberger, H.H.; Dreher, G.B.; Frankie, W.T. [Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States). Geological Survey; Ho, K.K. [Illinois Clean Coal Inst., Carterville, IL (United States)

    1993-05-01T23:59:59.000Z

    The goal of this project is to characterize marketed coals from Illinois mines. The results generated by this project will promote Illinois coals for prospective new markets as feed materials for advanced gasification processes, for synthetic organic chemicals, and help asses future environmental requirements for abatement of noxious trace elements. The properties that are being determined include the concentration of all trace elements that are of environmental concern, the pyrite size distribution and maceral association, preliminary froth flotation cleanability, slagging and fouling characteristics relevant to the coal`s behavior in utility boilers, chlorine forms and distribution, and certain gasification and rheology parameters. We completed collection and processing of samples of 34 marketed coals that represent the products from a total of 40 mines. All the samples were submitted for standard coal and trace element analyses, and some of the analytical tasks were completed. There was a considerable amount of trace element data on face channel samples scattered in various files at the ISGS. In order to establish useful correlations between the marketed coal and face channel samples, the existing files were integrated and edited for accuracy and completeness.

  20. MANAGING THE ENVIRONMENTAL IMPACT OF COAL MINING JF. Raffoux (INERIS), Vemeuil-en-Halatte, France

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    MANAGING THE ENVIRONMENTAL IMPACT OF COAL MINING JF. Raffoux (INERIS), Vemeuil-en-Halatte, France R contre, les impacts environnementaux lies ä l'exploitation du charbon n'ont fait vraiment l'objet de fermeture, afin d'en minimiser les impacts et de viser un retour ä une Situation apres exploitation proche

  1. Restoration As Mitigation: Analysis of Stream Mitigation for Coal Mining Impacts in Southern Appalachia

    E-Print Network [OSTI]

    Palmer, Margaret A.

    Restoration As Mitigation: Analysis of Stream Mitigation for Coal Mining Impacts in Southern Appalachia Margaret A. Palmer* and Kelly L. Hondula National Socio-Environmental Synthesis Center annual monitoring reports indicate that the ratio of lengths of stream impacted to lengths of stream

  2. Black Thunder Coal Mine and Los Alamos National Laboratory experimental study of seismic energy generated by large scale mine blasting

    SciTech Connect (OSTI)

    Martin, R.L.; Gross, D. [Thunder Basin Coal Co., Wright, WY (United States); Pearson, D.C.; Stump, B.W. [Los Alamos National Lab., NM (United States); Anderson, D.P. [Southern Methodist Univ., Dallas, TX (United States). Dept. of Geological Sciences

    1996-12-31T23:59:59.000Z

    In an attempt to better understand the impact that large mining shots will have on verifying compliance with the international, worldwide, Comprehensive Test Ban Treaty (CTBT, no nuclear explosion tests), a series of seismic and videographic experiments has been conducted during the past two years at the Black Thunder Coal Mine. Personnel from the mine and Los Alamos National Laboratory have cooperated closely to design and perform experiments to produce results with mutual benefit to both organizations. This paper summarizes the activities, highlighting the unique results of each. Topics which were covered in these experiments include: (1) synthesis of seismic, videographic, acoustic, and computer modeling data to improve understanding of shot performance and phenomenology; (2) development of computer generated visualizations of observed blasting techniques; (3) documentation of azimuthal variations in radiation of seismic energy from overburden casting shots; (4) identification of, as yet unexplained, out of sequence, simultaneous detonation in some shots using seismic and videographic techniques; (5) comparison of local (0.1 to 15 kilometer range) and regional (100 to 2,000 kilometer range) seismic measurements leading to determine of the relationship between local and regional seismic amplitude to explosive yield for overburden cast, coal bulking and single fired explosions; and (6) determination of the types of mining shots triggering the prototype International Monitoring System for the CTBT.

  3. Public views of reclaiming an abandoned coal mine: the Macoupin County project

    SciTech Connect (OSTI)

    Bernard, J. R.

    1980-07-01T23:59:59.000Z

    An abandoned underground coal mine waste area in Macoupin County, Illinois, has been reclaimed for demonstration and research purposes near the city of Staunton. According to federal law, end uses of reclaimed coal mines must be determined in part by local concerns. This study examined local residents' preferences for land uses and their social and economic evaluations of reclamation at the Macoupin County site. Personal interviews with 119 residents revealed preferences for recreational use of the demonstration area; however, responses were probably influenced by prior awareness of land-use intentions. Generally, very positive evaluations of the reclamation were received. Willingness to pay for reclamation appears to be linked to fulfillment of desired recreational uses on the site and socioeconomic status of the respondent. In general, the research results provide further evidence that the value of abatement of environmental damage from mining is recognized and supported in economic terms at the public level.

  4. Influence of continuous-miner bit sharpness and coal-lithotype composition on coal breakage: examples from Kentucky mines. Technical report

    SciTech Connect (OSTI)

    Lineberry, G.T.; Rogers, F.D.; Leonard, J.W.; Hower, J.C.; Graese, A.M.

    1985-01-01T23:59:59.000Z

    This pilot study addresses the influence of coal lithotype, continuous miner bit sharpness, and coal hardness on particle sizing and liberation characteristics. The interface of the job end of the traditional continuous mining machine and the given geologic conditions at the job site; and their combined influence on particle sizing and liberation is investigated.

  5. Arctic vegetation damage by winter-generated coal mining pollution released upon thawing

    SciTech Connect (OSTI)

    Bo Elberling; Jens Soendergaard; Louise A. Jensen; Lea B. Schmidt; Birger U. Hansen; Gert Asmund; Tonci BalicZunic; Joergen Hollesen; Susanne Hanson; Per-Erik Jansson; Thomas Friborg [University of Copenhagen, Copenhagen (Denmark). Institute of Geography and Geology

    2007-04-01T23:59:59.000Z

    Acid mine drainage (known as AMD) is a well-known environmental problem resulting from the oxidation of sulfidic mine waste. In cold regions, AMD is often considered limited by low temperatures most of the year and observed environmental impact is related to pollution generated during the warm summer period. Here we show that heat generation within an oxidizing, sulfidic, coal-mining waste-rock pile in Svalbard (Arctic Norway) (78{sup o}N) is high enough to keep the pile warm (roughly 5{sup o}C throughout the year) despite mean annual air temperatures below -5{sup o}C. Consequently, weathering processes continue year-round within the waste-rock pile which is characterised as a mixture of coal and a siltstone-mudstone. During the winter, weathering products accumulate within the pile because of a frozen outer layer on the pile and are released as a flush within 2 weeks of soil thawing in the spring. Consequently, spring runoff water contains elevated concentrations of metals. Several of these metals are taken up and accumulated in plants where they reach phytotoxic levels, including aluminum and manganese. Laboratory experiments document that uptake of Al and Mn in native plant species is highly correlated with dissolved concentrations. Therefore, future remedial actions to control the adverse environmental impacts of cold region coal-mining need to pay more attention to winter processes including AMD generation and accumulation of weathering products. 34 refs., 3 figs., 2 tabs.

  6. King Coal vs. Reclamation: federal regulation of mountaintop removal mining in Appalachia

    SciTech Connect (OSTI)

    Davis, C.E.; Duffy, R.J. [Colorado State University, Fort Collins, CO (United States). Dept. of Political Science

    2009-10-15T23:59:59.000Z

    This research focuses on the regulatory politics of mountaintop removal mining for coal within the Appalachian states of West Virginia and Kentucky. Based on Administrative Presidency concepts suggesting that chief executives seek more control and influence over agency program decisions, this article analyzes President George W. Bush's efforts to promote the development of coal resources within these states despite statutory constraints posed by federal environmental laws. The analysis demonstrates that President Bush effectively achieved his energy production goals by combining the use of discretionary authority with staff controls, executive orders, and regulatory initiatives to lessen industry compliance costs with environmental regulatory requirements.

  7. Fatal accidents involving roof falls in coal mining, 1996--1998

    SciTech Connect (OSTI)

    Not Available

    1999-01-01T23:59:59.000Z

    This publication presents information on fatalities involving roof and rib falls that occurred in coal mining operations from January 1996 through December 1998. It includes statistics for the fatalities, as well as abstracts, best practices and illustrations. Conclusion statements have been substituted for best practices where no Title 30 Code of Regulations violations were cited during the accident investigation. From January 1996 through December 1998, 36 miners died at coal operations from accidents classified as roof falls. The information in the report is based on statistics taken from the 1996 through 1998 MSHA Fatal Illustration Programs: Roof Fall Fatalities by District.

  8. Fatal accidents involving roof falls in coal mining, 1996--1998

    SciTech Connect (OSTI)

    NONE

    1999-11-01T23:59:59.000Z

    This publication presents information on fatalities involving roof and rib falls that occurred in coal mining operations from January 1996 through December 1998. It includes statistics for the fatalities, as well as abstracts, best practices and illustrations. Conclusion statements have been substituted for best practices where no Title 30 Code of Regulations violations were cited during the accident investigation. From January 1996 through December 1998, 36 miners died at coal operations from accidents classified as roof falls. The information in the report is based on statistics taken from the 1996 through 1998 MSHA Fatal Illustration Programs: Roof Fall Fatalities by District.

  9. Characterization of available coals from Illinois mines. Final technical report, September 1, 1992--August 31, 1993

    SciTech Connect (OSTI)

    Demir, I.; Harvey, R.D.; Ruch, R.R.; Chaven, C.; Damberger, H.H.; Steele, J.D.; Frankie, W.T. [Illinois State Geological Survey, Champaign, IL (United States)

    1993-12-31T23:59:59.000Z

    The goal of this project was to characterize available product coals from Illinois mines. The characterization parameters that were determined include the concentration of all trace and minor elements that are of environmental concern, the pyrite size distribution and maceral association, preliminary froth flotation cleanability, slagging and fouling characteristics, chlorine forms and distribution, and certain gasification and rheology parameters. The available trace element data on Illinois coals, mainly on channel samples, was edited and updated with new records. The determinations of the trace and minor elements in 34 collected cleaned coal samples, as well as the proximate and ultimate compositions of 34 samples, were completed. In comparison with the previous channel sample data, the results indicated that the cleaning at existing preparation plants reduced the average concentrations of most of the trace elements in the coals. The data also indicated that the trace element concentrations in the product coals could be reduced further by advanced physical cleaning techniques. A sequential (hot water, dilute ammonia, and dilute sodium hydroxide) extraction procedure on three samples indicated variable chloride reductions. The pyrite cleanability index was determined microscopically for each sample. This index is a relative measure of the ease of pyrite removal from the tested sample. The froth flotation test data on 15 of the samples provided a measure of further cleanability of the product coals by physical fine coal cleaning. Viscosities of the 50% solid and <60 mesh particle size slurries of the same 15 samples revealed that these coals can be pumped in slurry form through a pipeline. Slagging and fouling indices, calculated for all 34 samples, indicated that most of the samples are of low to medium slagging and fouling types. Calculation of the gasification parameters indicated that the Illinois coals are in general amenable to gasification.

  10. Research and Development of a New Silica-Alumina Based Cementitious Material Largely Using Coal Refuse for Mine Backfill, Mine Sealing and Waste Disposal Stabilization

    SciTech Connect (OSTI)

    Henghu Sun; Yuan Yao

    2012-06-29T23:59:59.000Z

    Coal refuse and coal combustion byproducts as industrial solid waste stockpiles have become great threats to the environment. To activate coal refuse is one practical solution to recycle this huge amount of solid waste as substitute for Ordinary Portland Cement (OPC). The central goal of this project is to investigate and develop a new silica-alumina based cementitious material largely using coal refuse as a constituent that will be ideal for durable construction, mine backfill, mine sealing and waste disposal stabilization applications. This new material is an environment-friendly alternative to Ordinary Portland Cement. The main constituents of the new material are coal refuse and other coal wastes including coal sludge and coal combustion products (CCPs). Compared with conventional cement production, successful development of this new technology could potentially save energy and reduce greenhouse gas emissions, recycle vast amount of coal wastes, and significantly reduce production cost. A systematic research has been conducted to seek for an optimal solution for enhancing pozzolanic reactivity of the relatively inert solid waste-coal refuse in order to improve the utilization efficiency and economic benefit as a construction and building material.

  11. Connecting mobility services and spatial territory typology: an application to a former coal mining area in France

    E-Print Network [OSTI]

    Boyer, Edmond

    Connecting mobility services and spatial territory typology: an application to a former coal mining 1 CONNECTING MOBILITY SERVICES AND SPATIAL TERRITORY TYPOLOGY: AN APPLICATION TO A FORMER COAL on the percentage of active residents working in an urban centre with an economic approach or upon physical features

  12. Connecting mobility services and spatial territory typology: an application to a former coal mining area in France

    E-Print Network [OSTI]

    Boyer, Edmond

    Connecting mobility services and spatial territory typology: an application to a former coal mining 1 CONNECTING MOBILITY SERVICES AND SPATIAL TERRITORY TYPOLOGY: AN APPLICATION TO A FORMER COAL and suburban or rural areas depends on the percentage of active residents working in an urban centre

  13. Characterization of available coals from Illinois mines. [Quarterly] technical report, March 1, 1993--May 31, 1993

    SciTech Connect (OSTI)

    Demir, I.; Harvey, R.D.; Ruch, R.R.; Chaven, C.; Damberger, H.H.; Steele, J.D.; Frankie, W.T. [Illinois State Geological Survey, Champaign, IL (United States)

    1993-09-01T23:59:59.000Z

    The goal of this project is to characterize marketed coals from Illinois mines. The characterization parameters that are being determined include the concentration of all trace and minor elements that are of environmental concern, proximate and ultimate compositions, the pyrite size distribution and maceral association, preliminary froth flotation cleanability, slagging and fouling characteristics relevant to the coal`s behavior in utility boilers, chlorine forms and distribution, and certain gasification and rheology parameters. During the third quarter, the trace element data base on Illinois coals was fully checked and edited. The determinations of the trace and minor element contents and proximate and ultimate compositions of the 34 project samples were largely completed. The pyritic S content, still high in some of the marketed samples, could be reduced further in the samples by advanced physical cleaning techniques. Results from the analysis of all 34 samples for Ba, Hg, Mn, and Zr indicate that these elements are primarily or partly associated with mineral matter and, therefore, their concentrations could also be reduced further in the product coals by advanced physical cleaning techniques. A sequential extraction of Cl from two of the samples revealed that regardless of the initial chlorine concentration of the two coals, the total combined amount of chlorine extracted by water, ammonia, and sodium hydroxide is about the same.

  14. Proceedings of Office of Surface Mining Coal Combustion By-product Government/Regulatory Panel: University of Kentucky international ash utilization symposium

    SciTech Connect (OSTI)

    Vories, K.C. (ed.)

    2003-07-01T23:59:59.000Z

    Short papers are given on: the Coal Combustion Program (C2P2) (J. Glenn); regional environmental concerns with disposal of coal combustion wastes at mines (T. FitzGerald); power plant waste mine filling - an environmental perspective (L.G. Evans); utility industry perspective regarding coal combustion product management and regulation (J. Roewer); coal combustion products opportunities for beneficial use (D.C. Goss); state perspective on mine placement of coal combustion by-products (G.E. Conrad); Texas regulations provide for beneficial use of coal combustion ash (S.S. Ferguson); and the Surface Mining Control and Reclamation Act - a response to concerns about placement of CCBs at coal mine sites (K.C. Vories). The questions and answers are also included.

  15. Seismic Characterization of Coal-Mining Seismicity in Utah for CTBT Monitoring

    SciTech Connect (OSTI)

    Arabasz, W J; Pechmann, J C

    2001-03-01T23:59:59.000Z

    Underground coal mining (down to {approx}0.75 km depth) in the contiguous Wasatch Plateau (WP) and Book Cliffs (BC) mining districts of east-central Utah induces abundant seismicity that is monitored by the University of Utah regional seismic network. This report presents the results of a systematic characterization of mining seismicity (magnitude {le} 4.2) in the WP-BC region from January 1978 to June 2000-together with an evaluation of three seismic events (magnitude {le} 4.3) associated with underground trona mining in southwestern Wyoming during January-August 2000. (Unless specified otherwise, magnitude implies Richter local magnitude, M{sub L}.) The University of Utah Seismograph Stations (UUSS) undertook this cooperative project to assist the University of California Lawrence Livermore National Laboratory (LLNL) in research and development relating to monitoring the Comprehensive Test Ban Treaty (CTBT). The project, which formally began February 28, 1998, and ended September 1, 2000, had three basic objectives: (1) Strategically install a three-component broadband digital seismic station in the WP-BC region to ensure the continuous recording of high-quality waveform data to meet the long-term needs of LLNL, UUSS, and other interested parties, including the international CTBT community. (2) Determine source mechanisms--to the extent that available source data and resources allowed--for comparative seismic characterization of stress release in mines versus earthquakes in the WP-BC study region. (3) Gather and report to LLNL local information on mine operations and associated seismicity, including ''ground truth'' for significant events. Following guidance from LLNL's Technical Representative, the focus of Objective 2 was changed slightly to place emphasis on three mining-related events that occurred in and near the study area after the original work plan had been made, thus posing new targets of opportunity. These included: a magnitude 3.8 shock that occurred close to the Willow Creek coal mine in the Book Cliffs area on February 5, 1998 (UTC date), just prior to the start of this project; a magnitude 4.2 shock on March 7,2000 (UTC date), in the same area as the February 5 event; and a magnitude 4.3 shock that occurred on January 30,2000 (UTC and local date), associated with a panel collapse at the Solvay trona mine in southwestern Wyoming. This is the same mine in which an earlier collapse event of magnitude 5.2 occurred in February 1995, attracting considerable attention from the CTBT community.

  16. anthracite mines mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  17. These lives will not be lost in vain: organizational learning from disaster in US coal mining

    SciTech Connect (OSTI)

    Madsen, P.M. [Brigham Young University, Provo, UT (United States). Marriott School Management

    2009-09-15T23:59:59.000Z

    The stated purpose of the investigations that invariably follow industrial, transportation, and mining disasters is to learn from those tragedies to prevent future tragedies. But does prior experience with disaster make organizations more capable of preventing future disasters? Do organizations learn from disasters experienced by other organizations? Do organizations learn differently from rare disasters than they do from common minor accidents? In its present state, the organizational safety literature is poorly equipped to answer these questions. The present work begins to address this gap by empirically examining how prior organizational experience with disaster affects the likelihood that organizations will experience future disasters. It approaches the issue in the context of fatal U.S. coal mining accidents from 1983 to 2006. The analysis demonstrates that organizations do learn to prevent future disasters through both direct and vicarious experience with disaster. It also indicates that the mechanisms through which organizations learn from disasters differ from those through which they learn from minor accidents.

  18. The effects of fish density on wading bird use of sediment ponds on an East Texas coal mine

    E-Print Network [OSTI]

    Renfrow, Donna Hubbard

    1993-01-01T23:59:59.000Z

    THE EFFECTS OF FISH DENSITY ON WADING BIRD USE OF SEDIMENT PONDS ON AN EAST TEXAS COAL MINE A Thesis by DONNA HUBBARD RENFROW Submitted to the Office of Graduate Studies of Texas A8cM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1993 Major Subject: Wildlife and Fisheries Sciences THE EFFECTS OF FISH DENSITY ON WADING BIRD USE OF SEDIMENT PONDS ON AN EAST TEXAS COAL MINE A Thesis by DONNA HUBBARD RENFROW Submitted to Texas A&M University...

  19. Is the coal industry worth protecting? an examination of the effects of competing advocacy coalitions on implementation of the Surface Mining Control and Reclamation Act (SMCRA) of 1977

    E-Print Network [OSTI]

    Pennington, Michael Sean

    2008-10-10T23:59:59.000Z

    . Their argument centered on the belief that the surface mining of coal had a large impact on interstate commerce, and as such a strong national policy was needed to level the playing field among coal industries in different states. Clearly this position... IS THE COAL INDUSTRY WORTH PROTECTING? AN EXAMINATION OF THE EFFECTS OF COMPETING ADVOCACY COALITIONS ON IMPLEMENTATION OF THE SURFACE MINING CONTROL AND RECLAMATION ACT (SMCRA) OF 1977 A Dissertation by MICHAEL SEAN PENNINGTON...

  20. Optimal Control of Coal Segregation using On-line Analyzers R. Ganguli, J. C. Yingling, J. Sottile, Dept. of Mining Eng.

    E-Print Network [OSTI]

    Kumar, Ratnesh

    1 Optimal Control of Coal Segregation using On-line Analyzers R. Ganguli, J. C. Yingling, J 40506 ABSTRACT The capability for on-line measurement of the quality characteristics of conveyed coal of coal that must be washed at the mine and thereby reduces processing costs, recovery losses, and refuse

  1. Selenium transformation in coal mine spoils: Its environmental impact assessment. Final report

    SciTech Connect (OSTI)

    Harness, J.; Atalay, A.; Koll, K.J.; Zhang, H.; Maggon, D.

    1991-12-31T23:59:59.000Z

    The objective of this program was to conduct an environmental impact assessment study for selenium from coal mine spoils. The use of in-situ lysimetry to predict selenium speciation, transformation, and mobility under natural conditions was evaluated. The scope of the study was to construct and test field-scale lysimeter and laboratory mini-column to assess mobility and speciation of selenium in coal mine overburden and soil systems; to conduct soil and groundwater sampling throughout the state of Oklahoma for an overall environmental impact assessment of selenium; and to conduct an in-depth literature review on the solubility, speciation, mobility, and toxicity of selenium from various sources. Groundwater and surface soil samples were also collected from each county in Oklahoma. Data collected from the lysimeter study indicated that selenium in the overburden of the abandoned mine site was mainly found in the selenite form. The amount of selenite found was too low and immobile to be of concern to the environment. The spoil had equilibrated long enough (over 50 years) that most of the soluble forms of selenium have already been lost. Examination of the overburden indicated the presence of pyrite crystals that precipitated over time. The laboratory mini-column study indicated that selenite is quite immobile and remained on the overburden material even after leaching with dilute acid. Data from groundwater samples indicated that based on the current permissible level for selenium in groundwater (0.01 mg Se/L), Oklahoma groundwater is widely contaminated with the element. However, according to the new regulation (0.05 mg Se/L), which is to be promulgated in 1992, only 9 of the 77 counties in the state exceed the limit.

  2. Utilization of coal mine methane for methanol and SCP production. Topical report, May 5, 1995--March 4, 1996

    SciTech Connect (OSTI)

    NONE

    1998-12-31T23:59:59.000Z

    The feasibility of utilizing a biological process to reduce methane emissions from coal mines and to produce valuable single cell protein (SCP) and/or methanol as a product has been demonstrated. The quantities of coal mine methane from vent gas, gob wells, premining wells and abandoned mines have been determined in order to define the potential for utilizing mine gases as a resource. It is estimated that 300 MMCFD of methane is produced in the United States at a typical concentration of 0.2-0.6 percent in ventilation air. Of this total, almost 20 percent is produced from the four Jim Walter Resources (JWR) mines, which are located in very gassy coal seams. Worldwide vent gas production is estimated at 1 BCFD. Gob gas methane production in the U.S. is estimated to be 38 MMCFD. Very little gob gas is produced outside the U.S. In addition, it is estimated that abandoned mines may generate as much as 90 MMCFD of methane. In order to make a significant impact on coal mine methane emissions, technology which is able to utilize dilute vent gases as a resource must be developed. Purification of the methane from the vent gases would be very expensive and impractical. Therefore, the process application must be able to use a dilute methane stream. Biological conversion of this dilute methane (as well as the more concentrated gob gases) to produce single cell protein (SCP) and/or methanol has been demonstrated in the Bioengineering Resources, Inc. (BRI) laboratories. SCP is used as an animal feed supplement, which commands a high price, about $0.11 per pound.

  3. DEVELOPMENT AND DEMONSTRATION OF A PILOT SCALE FACILITY FOR FABRICATION AND MARKETING OF LIGHTWEIGHT-COAL COMBUSTION BYPRODUCTS-BASED SUPPORTS AND MINE VENTILATION BLOCKS FOR UNDERGROUND MINES

    SciTech Connect (OSTI)

    Yoginder P. Chugh

    2002-10-01T23:59:59.000Z

    The overall goal of this program was to develop a pilot scale facility, and design, fabricate, and market CCBs-based lightweight blocks for mine ventilation control devices, and engineered crib elements and posts for use as artificial supports in underground mines to replace similar wooden elements. This specific project was undertaken to (1) design a pilot scale facility to develop and demonstrate commercial production techniques, and (2) provide technical and marketing support to Fly Lite, Inc to operate the pilot scale facility. Fly Lite, Inc is a joint venture company of the three industrial cooperators who were involved in research into the development of CCBs-based structural materials. The Fly-Lite pilot scale facility is located in McLeansboro, Illinois. Lightweight blocks for use in ventilation stoppings in underground mines have been successfully produced and marketed by the pilot-scale facility. To date, over 16,000 lightweight blocks (30-40 pcf) have been sold to the mining industry. Additionally, a smaller width (6-inch) full-density block was developed in August-September 2002 at the request of a mining company. An application has been submitted to Mine Safety and Health Administration for the developed block approval for use in mines. Commercialization of cribs and posts has also been accomplished. Two generations of cribs have been developed and demonstrated in the field. MSHA designated them suitable for use in mines. To date, over 2,000 crib elements have been sold to mines in Illinois. Two generations of posts were also demonstrated in the field and designated as suitable for use in mines by MSHA. Negotiations are currently underway with a mine in Illinois to market about 1,000 posts per year based on a field demonstration in their mine. It is estimated that 4-5 million tons CCBs (F-fly ash or FBC fly ash) may be utilized if the developed products can be commercially implemented in U.S. coal and non-coal mines.

  4. Local amplification of deep mining induced vibrations - Part.2: Simulation of the ground motion in a coal basin

    E-Print Network [OSTI]

    Semblat, Jean-François; Driad-Lebeau, L; Bonnet, Guy; 10.1016/j.soildyn.2010.04.006

    2010-01-01T23:59:59.000Z

    This work investigates the impact of deep coal mining induced vibrations on surface constructions using numerical tools. An experimental study of the geological site amplification and of its influence on mining induced vibrations has already been published in a previous paper (Part 1: Experimental evidence for site effects in a coal basin). Measurements have shown the existence of an amplification area in the southern part of the basin where drilling data have shown the presence of particularly fractured and soft stratigraphic units. The present study, using the Boundary Element Method (BEM) in the frequency domain, first investigates canonical geological structures in order to get general results for various sites. The amplification level at the surface is given as a function of the shape of the basin and of the velocity contrast with the bedrock. Next, the particular coal basin previously studied experimentally (Driad-Lebeau et al., 2009) is modeled numerically by BEM. The amplification phenomena characteri...

  5. 11/26/12 4:27 PMCoal mine fossils: Paleontology shows us past climate change. -Slate Magazine Page 1 of 4http://www.slate.com/articles/health_and_science/coal/2012/11/coal_mine_fossils_paleontology_shows_us_past_climate_change.single.html

    E-Print Network [OSTI]

    Montañez, Isabel Patricia

    11/26/12 4:27 PMCoal mine fossils: Paleontology shows us past climate change. - Slate Magazine Page 1 of 4http://www.slate.com/articles/health_and_science/coal/2012/11/coal_mine The Economist FollowFollow @slate@slate 467K followers LOG IN/REGISTER | NEWS & POLITICS TECH BUSINESS ARTS LIFE

  6. New EPA Guidelines for Review of Surface Coal Mining Operations in Appalachia (released in AEO2010)

    Reports and Publications (EIA)

    2010-01-01T23:59:59.000Z

    On April 1, 2010, the Environmental Protection Agency (EPA) issued a set of new guidelines to several of its Regional offices regarding the compliance of surface coal mining operations in Appalachia with the provisions of the Clean Water Act (CWA), the National Environmental Policy Act, and the environmental justice Executive Order (E.O. 12898). The stated purpose of the guidance was to explain more fully the approach that the EPA will be following in permit reviews, and to provide additional assurance that its Regional offices use clear, consistent, and science-based standards in reviewing the permits. Although the new guidelines go into effect immediately, they will be subjected to review both by the public and by the EPA's Science Advisory Board, with a set of final guidelines to be issued no later than April 1, 2011.

  7. Reactive-power compensation of coal mining excavators by using a new-generation STATCOM

    SciTech Connect (OSTI)

    Bilgin, H.F.; Ermis, M.; Kose, K.N.; Cadirci, I.; Acik, A.; Demirci, T.; Terciyanli, A.; Kocak, C.; Yorukoglu, M. [TUBITAK Information Technology & Electronic Research Institute, Ankara (Turkey)

    2007-01-15T23:59:59.000Z

    This paper deals with the development and implementation of a current-source-converter-based static synchronous compensator (CSC-STATCOM) applied to the volt-ampere-reactive (VAR) compensation problem of coal mining excavators. It is composed of a +/- 750-kVAR full-bridge CSC with selective harmonic elimination, a low-pass input filter tuned to 200 Hz, and a Delta/Y-connected coupling transformer for connection to medium-voltage load bus. Each power semiconductor switch is composed of an asymmetrical integrated gate commutated thyristor (IGCT) connected in series with a reverse-blocking diode and switched at 500 Hz to eliminate 5th, 7th, 11th, and 13th current harmonics produced by the CSC. Operating principles, power stage, design of dc link, and input filter are also described in this paper. It has been verified by field tests that the developed STATCOM follows rapid fluctuations in nearly symmetrical lagging and leading VAR consumption of electric excavators, resulting in nearly unity power factor on monthly basis, and the harmonic current spectra in the lines of CSC-STATCOM at the point of common coupling comply with the IEEE Standard 519-1992.

  8. A comparison of physiological strain of carriers in underground manual coal mines in India

    SciTech Connect (OSTI)

    Saha, R.; Dey, N.C.; Samanta, A.; Biswas, R. [University College of Medical Science, Lumbini (Nepal). Dept. of Physics

    2008-07-15T23:59:59.000Z

    Thirty nine healthy carriers (23-57 years of age) were investigated in underground manual coal mines in West Bengal, India during two different work spells of a single work shift. We compared physiological strain of workers <40 and {ge} 40 years of age. For both groups, mean heart rate was 124-133 beats/min, with a mean corresponding relative cardiac cost of 50-66%. Maximum aerobic capacities were estimated indirectly, following a standard step test protocol. Average oxygen consumption was 1.07-1.1 l/min, with an energy expenditure of 5.35-5.5 kcal/min among both age groups. Acceptable levels of physiological strain were well encroached, and older workers faced the maximum burden. The tasks studied were heavy to very heavy in nature. The weight of load carriage at a spontaneously chosen speed and the prevailing environmental conditions merit serious attention. There is extreme need of ergonomic interventions in reducing the postural load and musculoskeletal discomforts in this population.

  9. Coal Production 1992

    SciTech Connect (OSTI)

    Not Available

    1993-10-29T23:59:59.000Z

    Coal Production 1992 provides comprehensive information about US coal production, the number of mines, prices, productivity, employment, productive capacity, and recoverable reserves to a wide audience including Congress, Federal and State agencies, the coal industry, and the general public. In 1992, there were 3,439 active coal mining operations made up of all mines, preparation plants, and refuse operations. The data in Table 1 cover the 2,746 mines that produced coal, regardless of the amount of production, except for bituminous refuse mines. Tables 2 through 33 include data from the 2,852 mining operations that produced, processed, or prepared 10 thousand or more short tons of coal during the period, except for bituminous refuse, and includes preparation plants with 5 thousand or more employee hours. These mining operations accounted for over 99 percent of total US coal production and represented 83 percent of all US coal mining operations in 1992.

  10. abandoned mined lands: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  11. abandoned mined land: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  12. abandoned mining sites: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  13. abandoned mining land: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  14. advance mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  15. asan mining district: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  16. The production of acid mine drainage (AMD) from sur-face and underground coal mines in northern West Virginia

    E-Print Network [OSTI]

    Wilson, Thomas H.

    West Virginia is a major environmental problem and continues to receive much attention in affected (Figure 1) has produced some of the worst AMD problems in West Virginia surface mines due to low pH, high was successfully completed by Nobes and McCahon (1999). Data were collected over a mine spoil area in northern West

  17. Health-hazard evaluation report MHETA 89-009-1990, Consolidation Coal Company, Humphrey No. 7 Mine, Pentress, West Virginia

    SciTech Connect (OSTI)

    Kullman, G.J.

    1989-09-01T23:59:59.000Z

    An evaluation was made of worker exposure to hydraulic fluid used on the longwall-mining operations at Consolidated Coal Company's Humphrey Number 7 Mine, Pentress, West Virginia. Employees were complaining of headache, eye and throat irritation, congestion, and cough. A particular emulsion oil, Solcenic-3A, was used with water in the mine's hydraulic roof-support system. An analysis of the oil indicated the presence of methyl-isobutyl-carbinol (MIBC), dipropylene glycol, and paraffin hydrocarbons. Personal breathing-zone samples for MIBC were collected from all workers on the longwall mining operation during the two days of the visit. All the analysis indicated concentrations of MIBC below the limit of quantification, which was 0.6 parts per million for an 8 hour sample. These levels were well below the exposure recommendations of the Mine Safety and Health Administration. Exposure to MIBC may be occurring through skin contact with oil through hydraulic line leaks, accidents, and maintenance activity on the hydraulic machines. The report concludes that Solcenic-3A oil constituents in air did not pose a health hazard at the time of the survey.

  18. Mining conditions and deposition in the Amburgy (Westphalian B) coal, Breathitt Group, central Appalachian basin

    SciTech Connect (OSTI)

    Greb, S.F.; Eble, C.F. [Kentucky Geological Survey, Lexington, KY (United States); Hower, J.C. [Center for Applied Research, Lexington, KY (United States); Phillips, T.L. [Univ. of illinois, Urbana, IL (United States)

    1996-09-01T23:59:59.000Z

    Carbonate concretions called clay balls are rare in the Central Appalachian Basin, but were found in the Amburgy coal overlain by the Kendrick Shale Member. In the study area, the Amburgy coal is 0.7 to 0.9 meters thick, moderate to high in sulfur content, moderate to high in ash yield, and mostly bright clarain, except at the top near the area of coal balls, where durain of limited extent occurs. The coal is co-dominated by lycopod and cordaites; tree spores, with subordinate Calamites. The local durain layer is dominated by Densosporites, produced by the shrubby lycopod Ompbalophloios. Coal balls were encountered where the durain is immediately overlain by a coquinoid hash of broken and whole marine fossils, along a trend of coal thinning. The coal balls contain permineralized cordaites, lycopods, calamites, and ferns. The Amburgy coal accumulated as a succession of planar mires. Local splits in the seam are common, indicating contemporaneous clastic influx. The abundance of Cordaites may indicate brackish mire waters related to a coastal position and initial eustatic rise of the marginal Kendrick seas. Near the end of the Amburgy mires, the high ash-Omphalopbloios association is interpreted as a local area that was being drowned by the Kendrick transgression. Ravinement within this local embayment, rapid inundation by marine waters, and concentration of carbonate-bearing waters within transgressive scours may have contributed to the formation of coal balls and pyritic concretions in the upper part of the coal bed.

  19. Reuse of Produced Water from CO2 Enhanced Oil Recovery, Coal-Bed Methane, and Mine Pool Water by Coal-Based Power Plants

    SciTech Connect (OSTI)

    Chad Knutson; Seyed Dastgheib; Yaning Yang; Ali Ashraf; Cole Duckworth; Priscilla Sinata; Ivan Sugiyono; Mark Shannon; Charles Werth

    2012-04-30T23:59:59.000Z

    Power generation in the Illinois Basin is expected to increase by as much as 30% by the year 2030, and this would increase the cooling water consumption in the region by approximately 40%. This project investigated the potential use of produced water from CO{sub 2} enhanced oil recovery (CO{sub 2}-EOR) operations; coal-bed methane (CBM) recovery; and active and abandoned underground coal mines for power plant cooling in the Illinois Basin. Specific objectives of this project were: (1) to characterize the quantity, quality, and geographic distribution of produced water in the Illinois Basin; (2) to evaluate treatment options so that produced water may be used beneficially at power plants; and (3) to perform a techno-economic analysis of the treatment and transportation of produced water to thermoelectric power plants in the Illinois Basin. Current produced water availability within the basin is not large, but potential flow rates up to 257 million liters per day (68 million gallons per day (MGD)) are possible if CO{sub 2}-enhanced oil recovery and coal bed methane recovery are implemented on a large scale. Produced water samples taken during the project tend to have dissolved solids concentrations between 10 and 100 g/L, and water from coal beds tends to have lower TDS values than water from oil fields. Current pretreatment and desalination technologies including filtration, adsorption, reverse osmosis (RO), and distillation can be used to treat produced water to a high quality level, with estimated costs ranging from $2.6 to $10.5 per cubic meter ($10 to $40 per 1000 gallons). Because of the distances between produced water sources and power plants, transportation costs tend to be greater than treatment costs. An optimization algorithm was developed to determine the lowest cost pipe network connecting sources and sinks. Total water costs increased with flow rate up to 26 million liters per day (7 MGD), and the range was from $4 to $16 per cubic meter ($15 to $60 per 1000 gallons), with treatment costs accounting for 13 â?? 23% of the overall cost. Results from this project suggest that produced water is a potential large source of cooling water, but treatment and transportation costs for this water are large.

  20. Washability of trace elements in product coals from Illinois mines. Technical report, 1 December 1993--28 February 1994

    SciTech Connect (OSTI)

    Demir, I.; Ruch, R.R.; Harvey, R.D.; Steele, J.D.; Khan, S. [Illinois State Geological Survey, Champaign, IL (United States)

    1994-06-01T23:59:59.000Z

    The existing trace element washability data on Illinois coals are based on float-sink methods, and these data are not applicable to modern froth flotation or column flotation processes. Particularly, there is a lack of washability data on samples from modern preparation plants, as well as other product (as-shipped) coals. The goal of this project is to provide the needed trace element washability data on as-shipped coals that were collected during 1992--1993 from Illinois mines. During the second quarter, froth flotation/release analysis (FF/RA) tests on 34 project samples were completed at {minus}100, {minus}200, and {minus}400 mesh particle sizes. Products from the FF/RA tests were analyzed for ash, moisture, and some for total S and heating value (BTU), and the resulting data are being used to construct a series of washability curves. For example, these curves can show variation in BTU or combustible recovery as a function of the amount of ash or S rejected. Composite samples, each having 80% of the total BTU (or combustibles), were prepared for the {minus}100 and {minus}200 mesh FF/RA tests and submitted for trace element analysis. The composite samples for the {minus}400 mesh FF/RA tests will be submitted soon, and the analytical results are expected to be available in 3--4 months. The trace element data on the composite samples will indicate the potential for the removal of each element from the coals at the chosen flotation conditions and particle sizes.

  1. Coal competition: prospects for the 1980s

    SciTech Connect (OSTI)

    Not Available

    1981-03-01T23:59:59.000Z

    This report consists of 10 chapters which present an historical overview of coal and the part it has played as an energy source in the economic growth of the United States from prior to World War II through 1978. Chapter titles are: definition of coals, coal mining; types of coal mines; mining methods; mining work force; development of coal; mine ownership; production; consumption; prices; exports; and imports. (DMC)

  2. artisans mining columbite-tantalite: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  3. Coal industry annual 1997

    SciTech Connect (OSTI)

    NONE

    1998-12-01T23:59:59.000Z

    Coal Industry Annual 1997 provides comprehensive information about US coal production, number of mines, prices, productivity, employment, productive capacity, and recoverable reserves. US Coal production for 1997 and previous years is based on the annual survey EIA-7A, Coal Production Report. This report presents data on coal consumption, coal distribution, coal stocks, coal prices, and coal quality for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States. This report includes a national total coal consumption for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. 14 figs., 145 tabs.

  4. Waterfowl use of sediment ponds on an east Texas coal mine

    E-Print Network [OSTI]

    Reynolds, Larry A

    1989-01-01T23:59:59.000Z

    appreciation. Lastly, I thank my wife, Diana, who makes my life a continual adventure. She provided the love, encouragement, and confidence I often needed during my graduate work. vii TABLE OF CONTENTS Page ABSTRACT. ACKNOWLEDGEMENT. TABLE OF CONTENTS... Brown Mine by waterfowl use in Year 1. 2 Measurements of vegetative cover (m and k), shallow water, light transmission (cm), slope (k), and vegetative richness for 15 ponds in high, medium, and low waterfowl use classes at Big Brown Mine. 41 42...

  5. Advanced characterization of forms of chlorine, organic sulfur, and trace elements in available coals from operating Illinois mines. [Quarterly] technical report, September 1--November 30, 1994

    SciTech Connect (OSTI)

    Chou, M.I.M.; Demir, I.; Ruch, J.M. [Illinois State Geological Survey (United States)] [and others

    1994-12-31T23:59:59.000Z

    A set of 34 as-shipped coal samples from operating Illinois mines is available for this study to determine the forms of chlorine and sulfur and leachability of chlorine during wet grinding and froth flotation. The forms of chlorine may be inorganic, ionic, and organic. The forms of organic sulfur will include organic sulfide and thiophenic sulfur. Chlorine can be leached from coal during wet grinding. The potential for removal of chlorine from the samples during fine ({minus}200 mesh) and ultrafine ({minus}400 mesh) wet-grinding and during froth flotation designed primarily for removal of pyrite and ash will be determined. In addition, the organic/inorganic affinities of trace elements in as-shipped Illinois coals will be assessed so that the current physical coal cleaning results may be better interpreted.

  6. Longwall mining

    SciTech Connect (OSTI)

    NONE

    1995-03-14T23:59:59.000Z

    As part of EIA`s program to provide information on coal, this report, Longwall-Mining, describes longwall mining and compares it with other underground mining methods. Using data from EIA and private sector surveys, the report describes major changes in the geologic, technological, and operating characteristics of longwall mining over the past decade. Most important, the report shows how these changes led to dramatic improvements in longwall mining productivity. For readers interested in the history of longwall mining and greater detail on recent developments affecting longwall mining, the report includes a bibliography.

  7. Observation of induced fractures intercepted by mining in the Warrior Basin, Alabama. Topical report. Rock Creek methane from multiple coal seams completion project

    SciTech Connect (OSTI)

    Steidl, P.F.

    1991-12-01T23:59:59.000Z

    This report summarizes research and inspection of induced fractures that have been intercepted by mining. Induced fractures from 13 wells intercepted by mining were inspected at the Jim Walter Resources' (JWR) No. 4 and 5 Mines in Tuscaloosa County, and the Oak Grove Mine in Jefferson County, Alabama. In this area the Mary Lee and Blue Creek coalbeds average 1.3 ft and 4 to 5.5 ft, respectively at depths of about 2,000 ft at the JWR mines and 1,000 ft in the Oak Grove Mine. These seams are usually separated by 2 to 10 ft of rock parting. The wells were completed open hole from 1982 to 1986. Hydraulic fracture treatments were used to stimulate production. Some expected results include: in general, the fractures followed the coal face cleat direction; they were vertical, and were sandpacked close to the wall. Other observations include the following: (1) most of the fractures and proppant were present in the parting and roof rock, (2) results were similar in the JWR and Oak Grove Mines even though there is 1,000 ft less overburden at the Oake Grove Mine, and (3) no horizontal fractures were observed in the study; though other stimulations have propagated horizontal fractures at Oak Grove.

  8. Coal industry annual 1993

    SciTech Connect (OSTI)

    Not Available

    1994-12-06T23:59:59.000Z

    Coal Industry Annual 1993 replaces the publication Coal Production (DOE/FIA-0125). This report presents additional tables and expanded versions of tables previously presented in Coal Production, including production, number of mines, Productivity, employment, productive capacity, and recoverable reserves. This report also presents data on coal consumption, coal distribution, coal stocks, coal prices, coal quality, and emissions for a wide audience including the Congress, Federal and State agencies, the coal industry, and the general public. In addition, Appendix A contains a compilation of coal statistics for the major coal-producing States. This report does not include coal consumption data for nonutility Power Producers who are not in the manufacturing, agriculture, mining, construction, or commercial sectors. This consumption is estimated to be 5 million short tons in 1993.

  9. Labor and Safety: Mines and Mining Safety (Indiana)

    Broader source: Energy.gov [DOE]

    This section contains labor regulations pertaining specifically to coal mine workers. The law establishes the Indiana Mining Board. The Board's duties include: collecting and distributing...

  10. China Brief, Volume 7, Issue 1 SAFETY CHALLENGES IN CHINA'S COAL MINING INDUSTRY

    E-Print Network [OSTI]

    ) of coal produced in China was 2.73 in 2005, it was a mere 0.04 in the United States [2]. Even India,995 deaths annually in the last decade, though independent experts state that China's actual death toll technologies and strict regulations. Therefore, while the official fatality rate per million tonnes (mt

  11. abandoned lignite mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  12. abandoned metal mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  13. abandoned anthracite mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  14. abandoned underground mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  15. Coal Industry Annual 1995

    SciTech Connect (OSTI)

    NONE

    1996-10-01T23:59:59.000Z

    This report presents data on coal consumption, coal distribution, coal stocks, coal prices, coal quality, and emissions for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States. This report does not include coal consumption data for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. Consumption for nonutility power producers not included in this report is estimated to be 21 million short tons for 1995.

  16. Coal industry annual 1996

    SciTech Connect (OSTI)

    NONE

    1997-11-01T23:59:59.000Z

    This report presents data on coal consumption, coal distribution, coal stocks, coal prices, and coal quality, and emissions for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States.This report does not include coal consumption data for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. Consumption for nonutility power producers not included in this report is estimated to be 24 million short tons for 1996. 14 figs., 145 tabs.

  17. THE USE OF COAL COMBUSTION BY-PRODUCTS FOR IN SITU TREATMENT OF ACID MINE DRAINAGE

    SciTech Connect (OSTI)

    Geoffrey A. Canty; Jess W. Everett

    2004-09-30T23:59:59.000Z

    In 1994 a demonstration project was undertaken to investigate the effectiveness of using CCBs for the in situ treatment of acidic mine water. Actual injection of alkaline material was performed in 1997 with initial positive results; however, the amount of alkalinity added to the system was limited and resulted in short duration treatment. In 1999, a CBRC grant was awarded to further investigate the effectiveness of alkaline injection technology (AIT). Funds were released in fall 2001. In December 2001, 2500 tons of fluidized bed combustion (FBC) ash were injected into the wells used in the 1997 injection project. Post injection monitoring continued for 24 months. During this period the mine chemistry had gone through a series of chemical changes that manifested as stages or ''treatment phases.'' The mine system appeared to be in the midst of reestablishing equilibrium with the partial pressure of mine headspace. Alkalinity and pH appeared to be gradually increasing during this transition. As of December 2003, the pH and alkalinity were roughly 7.3 and 65 ppm, respectively. Metal concentrations were significantly lower than pre-injection levels, but iron and manganese concentrations appeared to be gradually increasing (roughly 30 ppm and 1.25 ppm, respectively). Aluminum, nickel, and zinc were less than pre-injection concentrations and did not appear to be increasing (roughly

  18. Is FLARE for Solar flare?

    E-Print Network [OSTI]

    D. Fargion

    2005-12-07T23:59:59.000Z

    The Fermi Lab Liquid ARgon experiment, FLARE, a huge neutrino argon-liquid project detector of 50 kt mass, might in a near future enlarge the neutrino telescope accuracy revealing in detail solar, supernova, atmospheric as well as largest solar flares neutrino. Indeed the solar energetic (E_p > 100 MeVs) flare particles (protons, alpha) while scattering among themselves or hitting the solar atmosphere must produce on sun prompt charged pions, whose decay (as well as their sequent muon decays) into secondaries is source of a copious solar neutrino "flare" (at tens or hundreds MeV energy). These brief (minutes) neutrino "burst" at largest flare peak may overcome by three to five order of magnitude the steady atmospheric neutrino noise on the Earth, possibly leading to their emergence and detection above the thresholds. The largest prompt "burst" solar neutrino flare may be detected in future FLARE neutrino detectors both in electron and positron and possibly in its muon pair neutrino component. Our estimate for the recent and exceptional October - November 2003 solar flares and last January 20th 2005 exceptional flare might lead to a few events for future FLARE or near unity for present Super-KamiokandeII. The neutrino spectra may reflect the neutrino flavor oscillations and mixing in flight. In neutrino detectors a surprising (correlated) muon appearance may occur while a rarer tau appearance may even marginally take place. A comparison of the solar neutrino flare signal with other neutrino foreground is estimated: it offer the first opportunity for an independent road map to disentangle the neutrino flavor puzzles, as well a prompt alarm system for dangerous solar flare eruptions.

  19. Mining

    Broader source: Energy.gov [DOE]

    Supply and cost management–including energy costs–pose key challenges for U.S. mining companies. The industry has worked with AMO to develop a range of resources for increasing energy efficiency and reducing costs.

  20. ENERGY UTILIZATION AND ENVIRONMENTAL CONTROL TECHNOLOGIES IN THE COAL-ELECTRIC CYCLE

    E-Print Network [OSTI]

    Ferrell, G.C.

    2010-01-01T23:59:59.000Z

    Y·~' Table 3-12. Coal Source State Mine Seam Wilsonville SRCAnalysis for Coal Underground Mines in 48-inch Seams - 1974Analysis for Coal Underground Mines in 72-inch Seams - 1974

  1. Performance consequences of alternating directional control-response compatibility: Evidence from a coal mine shuttle car simulator

    SciTech Connect (OSTI)

    Zupanc, C.M.; Burgess-Limerick, R.J.; Wallis, G. [University of Queensland, St Lucia, Qld. (Australia)

    2007-08-15T23:59:59.000Z

    This experiment examines the performance of 48 novice participants in a virtual analogy of an underground coal mine shuttle car. Participants were randomly assigned to a compatible condition, an incompatible condition, an alternating condition in which compatibility alternated within and between hands, or an alternating condition in which compatibility alternated between hands. Participants made fewer steering direction errors and made correct steering responses more quickly in the compatible condition. Error rate decreased over time in the incompatible condition. A compatibility effect for both errors and reaction time was also found when the control-response relationship alternated; however, performance improvements over time were not consistent. Isolating compatibility to a hand resulted in reduced error rate and faster reaction time than when compatibility alternated within and between hands. Thus consequences of alternating control-response relationships are higher error rates and slower responses, at least in the early stages of learning. This research highlights the importance of ensuring consistently compatible human-machine directional control-response relationships.

  2. Proceedings, 27th international conference on ground control in mining

    SciTech Connect (OSTI)

    Peng, S.S.; Mark, C.; Finfinger, G. (and others) (eds.)

    2008-07-01T23:59:59.000Z

    Topics covered include: coal bumps and rockbursts, surface subsidence, surface mining, mine seals, longwall mining, pillars, roof bolting, rock mechanics and standing supports.

  3. Determination of immediate roof at mines of the Kutahya-Omerler coal basin, Turkey

    SciTech Connect (OSTI)

    G. Konak; T. Onargan; C.O. Aksoy; H. Kose; C. Tatar; C. Pamukcu [Dokuz Eylul University, Izmir (Turkey). Department of Mining Engineering

    2006-01-15T23:59:59.000Z

    The estimation of the relations between excavation height, longwall advance rate, convergence around a longwall in the roof-soil direction, and load distribution on support is reported, that are of specific importance for selecting support type. The principal attention is focused on determination of the immediate roof height that depends on the mobility characteristics of overlying rocks and governs mainly the stopping convergence and load intensity on the support. Numerical modeling, laboratory and field experiments are undertaken in this study, which included evaluation of composition and physicomechanical properties of rocks, assessment of stress-strain state of rock mass and of the immediate roof height, measurements of disintegration and bulking factor of overlying rocks, convergence of stopping floor and roof, and loads on hydraulic legs of supports. The study parameters obtained by different methods for the Omerler Mine are presented.

  4. Proceedings, 26th international conference on ground control in mining

    SciTech Connect (OSTI)

    Peng, S.S.; Mark, C.; Finfinger, G. (and others) (eds.)

    2007-07-01T23:59:59.000Z

    Papers are presented under the following topic headings: multiple-seam mining, surface subsidence, coal pillar, bunker and roadway/entry supports, mine design and highwall mining, longwall, roof bolting, stone and hardrock mining, rock mechanics and mine seal.

  5. Climate VISION: Private Sector Initiatives: Mining: Resources...

    Office of Scientific and Technical Information (OSTI)

    Outreach Program (CMOP) is a voluntary program aimed at reducing methane emissions from coal mining activities. Our mission is to promote the profitable recovery and use of coal...

  6. Coal production 1989

    SciTech Connect (OSTI)

    Not Available

    1990-11-29T23:59:59.000Z

    Coal Production 1989 provides comprehensive information about US coal production, the number of mines, prices, productivity, employment, reserves, and stocks to a wide audience including Congress, federal and state agencies, the coal industry, and the general public. 7 figs., 43 tabs.

  7. Where Appalachia Went Right: White Masculinities, Nature, and Pro-Coal Politics in an Era of Climate Change

    E-Print Network [OSTI]

    Schwartzman, Gabe

    2013-01-01T23:59:59.000Z

    in order to mine a coal seam and then leave a rocky,breaking the coal out of the coal seams, work that dozens ofbanker, could open a seam of coal [on a surface mine] with

  8. The Impact of the Clean Air Act Amendments of 1990 on Electric Utilities and Coal Mines: Evidence from the Stock Market

    E-Print Network [OSTI]

    Kahn, Shulamit; Knittel, Christopher R.

    2003-01-01T23:59:59.000Z

    administration would back clean-coal technology developmentwould pursue clean-coal technology rather than emissions

  9. 2009 Coal Age Buyers Guide

    SciTech Connect (OSTI)

    NONE

    2009-07-15T23:59:59.000Z

    The buyers guide lists more than 1200 companies mainly based in the USA, that provide equipment and services to US coal mines and coal preparation plants. The guide is subdivided by product categories.

  10. Coal data: A reference

    SciTech Connect (OSTI)

    Not Available

    1995-02-01T23:59:59.000Z

    This report, Coal Data: A Reference, summarizes basic information on the mining and use of coal, an important source of energy in the US. This report is written for a general audience. The goal is to cover basic material and strike a reasonable compromise between overly generalized statements and detailed analyses. The section ``Supplemental Figures and Tables`` contains statistics, graphs, maps, and other illustrations that show trends, patterns, geographic locations, and similar coal-related information. The section ``Coal Terminology and Related Information`` provides additional information about terms mentioned in the text and introduces some new terms. The last edition of Coal Data: A Reference was published in 1991. The present edition contains updated data as well as expanded reviews and additional information. Added to the text are discussions of coal quality, coal prices, unions, and strikes. The appendix has been expanded to provide statistics on a variety of additional topics, such as: trends in coal production and royalties from Federal and Indian coal leases, hours worked and earnings for coal mine employment, railroad coal shipments and revenues, waterborne coal traffic, coal export loading terminals, utility coal combustion byproducts, and trace elements in coal. The information in this report has been gleaned mainly from the sources in the bibliography. The reader interested in going beyond the scope of this report should consult these sources. The statistics are largely from reports published by the Energy Information Administration.

  11. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    21 Figure 6: Map of PRB coal mines serviced by the BNSF-UPPRB.of the Powder River Basin (PRB) in Wyoming. Although traffic

  12. State coal profiles, January 1994

    SciTech Connect (OSTI)

    Not Available

    1994-02-02T23:59:59.000Z

    The purpose of State Coal Profiles is to provide basic information about the deposits, production, and use of coal in each of the 27 States with coal production in 1992. Although considerable information on coal has been published on a national level, there is a lack of a uniform overview for the individual States. This report is intended to help fill that gap and also to serve as a framework for more detailed studies. While focusing on coal output, State Coal Profiles shows that the coal-producing States are major users of coal, together accounting for about three-fourths of total US coal consumption in 1992. Each coal-producing State is profiled with a description of its coal deposits and a discussion of the development of its coal industry. Estimates of coal reserves in 1992 are categorized by mining method and sulfur content. Trends, patterns, and other information concerning production, number of mines, miners, productivity, mine price of coal, disposition, and consumption of coal are detailed in statistical tables for selected years from 1980 through 1992. In addition, coal`s contribution to the State`s estimated total energy consumption is given for 1991, the latest year for which data are available. A US summary of all data is provided for comparing individual States with the Nation as a whole. Sources of information are given at the end of the tables.

  13. Safer blasting agents and procedures for blasting in gassy non-coal mines. Final report, September 9, 1990--December 31, 1993

    SciTech Connect (OSTI)

    Not Available

    1993-12-01T23:59:59.000Z

    Hundreds of tests have been conducted in the Bureau`s Lake Lynn Laboratory Cannon Gallery to evaluate the incendivity characteristics of both commercially available and experimental explosive products. The cannon gallery test results have clearly identified several lower incendive explosives that can and have significantly reduced the gas and/or dust ignition hazards associated with blasting in non-coal mines. Several of the lower incendive explosive formulations have undergone full-scale field evaluations and, to date, had been very successful in preventing ignitions in base metal mines with high sulphur-bearing ore. Tests in the cannon gallery have shown that an inert gelled water material outperforms most other stemming agents in preventing the ignition of flammable gases and/or combustible dusts outside of the bore. A new water stemming plug was evaluated in the cannon gallery and shown to be a very effective stemming device. As a means to better evaluate explosive incendivity, the initial development of two instrument sensors are underway. A fiber optic rate probe has been redesigned to accurately measure the detonation velocity of explosives in the cannon bore. A photometric sensor is also under development to measure the peak temperatures of the detonation products exiting the bore. This report discusses the results of the research program including the test apparatus and procedures and summarizes the incendivity data obtained from the various explosives. Results from the full-scale field testing of the lower incendive products in an operating mine are then presented.

  14. Health and safety evaluation of a modified tunnel-borer design for application to single-entry coal-mine development

    SciTech Connect (OSTI)

    Zimmerman, W. F.

    1982-02-15T23:59:59.000Z

    The health and safety analysis is part of an overall effort to identify and develop innovative underground coal extraction systems. The single-entry tunnel borer system was initially considered an innovative approach to underground mining because it exhibited a means of increasing the speed and efficiency of entry development by reducing the number of entries. However, to be considered a truly advanced system, the tunnel borer had to meet distinct safety criteria as well. The objective was to examine the tunnel borer design and determine whether it offset major health hazards, and satisfied the prescribed safety levels. As a baseline for comparison, the tunnel borer was compared against the continuous mining entry driving system. The results of the health analysis indicated that while the tunnel borer design offered improvements in dust control through the use of water sprays, a higher face ventilation rate, and the application of spalling rather than the conventional grinding process, it interjected an additional mutagenic is and toxic compound into the environment through the use of shotcrete. The tunnel borer system easily conformed with the prescribed fatality limit, but exceeded the required limits for disabling and overall injuries. It also exhibited projected disabling and overall injury rates considerably higher than existing continuous mining injury rates. Consequently, the tunnel borer system was not considered an advanced system.

  15. Washability of trace elements in product coals from Illinois mines. Technical report, 1 March--31 May 1994

    SciTech Connect (OSTI)

    Demir, I.; Ruch, R.R.; Harvey, R.D.; Steele, J.D.; Khan, S.

    1994-09-01T23:59:59.000Z

    Existing washability data on trace elements in Illinois coals were generated using float-sink methods, which are not applicable to modern froth flotation or column flotation processes. Particularly, there is a lack of washability data on product (as-shipped) coals from modern preparation plants. The goal of this project is to provide the needed trace element washability (release analysis) data on as-shipped Illinois coals using a froth flotation/release analysis (FF/RA) procedure. The results generated by this project will promote industrial utilization of Illinois coals and help assess the effect of new environmental requirements on the use of these coals in utility steam generation. During the third quarter, preparation and submission of all samples for chemical analysis were completed. Analyses of the samples produced by cleaning 34 as-shipped coals using FF/RA were completed for ash, moisture, S, heating value (BTU), and F, and some for Mn and oxide composition. The rest of the analytical work is in progress. The analytical data are being used to evaluate removal of ash, S, and trace elements from the as-shipped coals at the chosen flotation conditions and particles sizes. Available data on the FF/RA of five as-shipped coals at {minus}100, {minus}200, {minus}400 mesh sizes indicate that ash and F rejections increase with decreasing particle size. For the {minus}400 mesh tests, 70--90% of the ash and 35--74% of F were rejected at a BTU or combustibles recovery of 80%. One of the as-shipped coals was previously subjected to FF/RA tests at {minus}100 and {minus}400 mesh sizes to investigate mass balances achievable for the procedure. Preliminary results on ash and F contents of complete set of flotation products from the two tests indicate a mass balance of 95 to 100%.

  16. Opportunities in underground coal gasification

    SciTech Connect (OSTI)

    Bloomstran, M.A.; Davis, B.E.

    1984-06-01T23:59:59.000Z

    A review is presented of the results obtained on DOE-sponsored field tests of underground coal gasification in steeply-dipping beds at Rawlins, Wyoming. The coal gas composition, process parameters, and process economics are described. Steeply-dipping coal resources, which are not economically mineable using conventional coal mining methods, are identified and potential markets for underground coal gasification products are discussed. It is concluded that in-situ gasification in steeply-dipping deposits should be considered for commercialization.

  17. Rule of Tennessee Department of Conservation Division of Surface Mining (Tennessee)

    Broader source: Energy.gov [DOE]

    The Division of Surface Mining, under the authority of the Department of Environment and Conservation, has established rules specific to the mining of coal. All coal mining operations must first...

  18. Exploration for deep coal

    SciTech Connect (OSTI)

    NONE

    2008-12-15T23:59:59.000Z

    The most important factor in safe mining is the quality of the roof. The article explains how the Rosebud Mining Co. conducts drilling and exploration in 11 deep coal mine throughout Pennsylvania and Ohio. Rosebud uses two Atlas Copco CS10 core drilling rigs mounted on 4-wheel drive trucks. The article first appeared in Atlas Copco's in-house magazine, Deep Hole Driller. 3 photos.

  19. A generic study of strip mining impacts on groundwater resources

    E-Print Network [OSTI]

    Hamilton, David Andrew

    1977-01-01T23:59:59.000Z

    This report evaluates the influence of strip mining features, commonly found in the Northern Great Plains Coal Region, on ground

  20. Canada's coal industry: full swing ahead

    SciTech Connect (OSTI)

    Stone, K. [Natural Resources Canada (Canada). Minerals and Metals Sector

    2007-03-15T23:59:59.000Z

    The article presents facts and figures about Canada's coal industry in 2006 including production, exports, imports, mines in operation, the Genesee 3 coal-fired generation unit, the Dodds-Roundhill Gasification Project, and new coal mine development plans. The outlook for 2007 is positive, with coal production expected to increase from 67 Mt in 2006 to 70 Mt in 2007 and exports expected to increase from 28 Mt in 2006 to 30 Mt in 2007.

  1. Strip Mine Law (Missouri)

    Broader source: Energy.gov [DOE]

    This law authorizes the Land Reclamation Commission of the Department of Natural Resources to adopt and promulgate rules and regulations pertaining to strip mining of coal and reclamation, review...

  2. Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics

    SciTech Connect (OSTI)

    Doyle, F.M.

    1992-01-01T23:59:59.000Z

    During the ninth quarter, electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania. Scanning electron microscopy and energy dispersive X-ray analysis were done to characterize the morphology and composition of the surface of as-received coal, oxidized coal and coal pyrite. In addition, electrokinetic tests were done on Upper Freeport coal pyrite.

  3. Flare System Optimization

    E-Print Network [OSTI]

    Aegerter, R.

    Flare losses are typically the largest source of variable losses in a refinery or chemical plant. Since most plant flare systems are complex, there can be many opportunities to reduce costs. Losses to the flare can include process gases, fuel gas...

  4. Coal Transportation Issues (released in AEO2007)

    Reports and Publications (EIA)

    2007-01-01T23:59:59.000Z

    Most of the coal delivered to U.S. consumers is transported by railroads, which accounted for 64% of total domestic coal shipments in 2004. Trucks transported approximately 12% of the coal consumed in the United States in 2004, mainly in short hauls from mines in the East to nearby coal-fired electricity and industrial plants. A number of minemouth power plants in the West also use trucks to haul coal from adjacent mining operations. Other significant modes of coal transportation in 2004 included conveyor belt and slurry pipeline (12%) and water transport on inland waterways, the Great Lakes, and tidewater areas (9%).

  5. Mining into the new millennium

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2009-06-15T23:59:59.000Z

    After more than 3 years of production and a billion tons of coal shipped, Foundation Coal West, a subsidiary of Foundation Coal Holding Inc., continues to operate two of the original surface mines in Wyoming's Powder River Basin. The article describes equipment (conveyors, trucks, surface miners etc.) deployed at Belle Ayr and Eagle Butte PRB operations. 3 photos.

  6. ENCOAL Mild Coal Gasification Project

    SciTech Connect (OSTI)

    Not Available

    1992-02-01T23:59:59.000Z

    ENCOAL Corporation, a wholly-owned subsidiary of Shell Mining Company, is constructing a mild gasification demonstration plant at Triton Coal Company's Buckskin Mine near Gillette, Wyoming. The process, using Liquids From Coal (LFC) technology developed by Shell and SGI International, utilizes low-sulfur Powder River Basin Coal to produce two new fuels, Process Derived Fuel (PDF) and Coal Derived Liquids (CDL). The products, as alternative fuels sources, are expected to significantly reduce current sulfur emissions at industrial and utility boiler sites throughout the nation, thereby reducing pollutants causing acid rain.

  7. Reintroduction of Native FishReintroduction of Native Fish Species to Coal CreekSpecies to Coal Creek

    E-Print Network [OSTI]

    Gray, Matthew

    1 Reintroduction of Native FishReintroduction of Native Fish Species to Coal CreekSpecies to Coal Control and Reclamation ActSurface Mining Control and Reclamation Act of 1977of 1977 Coal Creek Watershed Foundation (2000)Coal Creek Watershed Foundation (2000) BackgroundBackground Fish populations in Coal Creek

  8. HYDROGENOLYSIS OF A SUB-BITUMINOUS COAL WITH MOLTEN ZINC CHLORIDE SOLUTIONS

    E-Print Network [OSTI]

    Holten, R.R.

    2010-01-01T23:59:59.000Z

    variations in coal from rank to rank, mine to mine, seam tocoal was supplied by the Wyodak t. Resources Development Corporation from the Roland top seam

  9. National Coal Quality Inventory (NACQI)

    SciTech Connect (OSTI)

    Robert Finkelman

    2005-09-30T23:59:59.000Z

    The U.S. Geological Survey (USGS) conducted the National Coal Quality Inventory (NaCQI) between 1999 and 2005 to address a need for quality information on coals that will be mined during the next 20-30 years. Collaboration between the USGS, State geological surveys, universities, coal burning utilities, and the coal mining industry plus funding support from the Electric Power Research Institute (EPRI) and the U.S. Department of Energy (DOE) permitted collection and submittal of coal samples for analysis. The chemical data (proximate and ultimate analyses; major, minor and trace element concentrations) for 729 samples of raw or prepared coal, coal associated shale, and coal combustion products (fly ash, hopper ash, bottom ash and gypsum) from nine coal producing States are included. In addition, the project identified a new coal reference analytical standard, to be designated CWE-1 (West Elk Mine, Gunnison County, Colorado) that is a high-volatile-B or high-volatile-A bituminous coal with low contents of ash yield and sulfur, and very low, but detectable contents of chlorine, mercury and other trace elements.

  10. Climate VISION: Private Sector Initiatives: Mining: Resources...

    Office of Scientific and Technical Information (OSTI)

    process on the most significant and timely issues that impact our ability to locate, permit, mine, process, transport, and utilize the nation's vast coal and mineral resources...

  11. Description of Wyoming coal fields and seam analyses

    SciTech Connect (OSTI)

    Glass, G.B.

    1983-01-01T23:59:59.000Z

    Introductory material describe coal-bearing areas, coal-bearing rocks, and the structural geology of coal-bearing areas, discussing coal rank, proximate analyses, sulfur content, heat value, trace elements, carbonizing properties, coking coal, coking operations, in-situ gasification, coal mining, and production. The paper then gives descriptions of the coal seams with proximate analyses, where available, located in the following areas: Powder River coal basin, Green River region, Hanna field, Hams Fork coal region, and Bighorn coal basin. Very brief descriptions are given of the Wind River coal basin, Jackson Hole coal field, Black Hills coal region, Rock Creek coal field, and Goshen Hole coal field. Finally coal resources, production, and reserves are discussed. 76 references.

  12. Rend Lake College celebrates the opening of a new coal miner training facility

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2009-09-15T23:59:59.000Z

    The Coal Miner Training Center at Rend Lake College recently hosted the Illinois Mining Institute's annual conference and a regional mine rescue competition. The article gives an outline of the coal miner training and refresher course offered. 3 photos.

  13. ENERGY UTILIZATION AND ENVIRONMENTAL CONTROL TECHNOLOGIES IN THE COAL-ELECTRIC CYCLE

    E-Print Network [OSTI]

    Ferrell, G.C.

    2010-01-01T23:59:59.000Z

    Kansas New Mexico Sulfur Content Feed Coal (%) Sulfurcoal from different sections of the Navajo mine in New Mexico (

  14. Establishment of wetland vegetation on East Texas mine spoil

    E-Print Network [OSTI]

    McKnight, Steven Keith

    1991-01-01T23:59:59.000Z

    at Big Brown Mine, Fairfield, Texas. Means with different letters differ (P& 0. 05). 'S. latifolia AGB was not collected. 56 CHAPTER I INTRODUCTION Lignite coal is an important source of fuel for steam generation of electricity in Texas, and surface... mining is the predominant method of coal removal because the coal seams are relatively shallow and nearly horizontal. Over 405, 000 ha of land in Texas eventually will be surface mined (Hossner 1980). The federal Surface Mine Control and Reclamation...

  15. Utilization of coal mine ventilation exhaust as combustion air in gas-fired turbines for electric and/or mechanical power generation. Semi-annual topical report, June 1995--August 1995

    SciTech Connect (OSTI)

    NONE

    1995-12-01T23:59:59.000Z

    Methane emitted during underground coal mining operations is a hazard that is dealt with by diluting the methane with fresh air and exhausting the contaminated air to the atmosphere. Unfortunately this waste stream may contain more than 60% of the methane resource from the coal, and in the atmosphere the methane acts as a greenhouse gas with an effect about 24.5 times greater than CO{sub 2}. Though the waste stream is too dilute for normal recovery processes, it can be used as combustion air for a turbine-generator, thereby reducing the turbine fuel requirements while reducing emissions. Preliminary analysis indicates that such a system, built using standard equipment, is economically and environmentally attractive, and has potential for worldwide application.

  16. PRB mines mature

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2007-08-15T23:59:59.000Z

    Already seeing the results of reclamation efforts, America's largest surface mines advance as engineers prepare for the future. 30 years after the signing of the Surface Mining Control and Reclamation Act by Jimmy Carter, western strip mines in the USA, especially in the Powder River Basin, are producing more coal than ever. The article describes the construction and installation of a $38.5 million near-pit crusher and overland belt conveyor system at Foundation Coal West's (FCW) Belle Ayr surface mine in Wyoming, one of the earliest PRB mines. It goes on to describe the development by Rio Tinto of an elk conservatory, the Rochelle Hill Conservation Easement, on reclaimed land at Jacobs Ranch, adjacent to the Rochelle Hills. 4 photos.

  17. Coal sector profile

    SciTech Connect (OSTI)

    Not Available

    1990-06-05T23:59:59.000Z

    Coal is our largest domestic energy resource with recoverable reserves estimated at 268 billion short tons or 5.896 quads Btu equivalent. This is approximately 95 percent of US fossil energy resources. It is relatively inexpensive to mine, and on a per Btu basis it is generally much less costly to produce than other energy sources. Its chief drawbacks are the environmental, health and safety concerns that must be addressed in its production and consumption. Historically, coal has played a major role in US energy markets. Coal fueled the railroads, heated the homes, powered the factories. and provided the raw materials for steel-making. In 1920, coal supplied over three times the amount of energy of oil, gas, and hydro combined. From 1920 until the mid 1970s, coal production remained fairly constant at 400 to 600 million short tons a year. Rapid increases in overall energy demands, which began during and after World War II were mostly met by oil and gas. By the mid 1940s, coal represented only half of total energy consumption in the US. In fact, post-war coal production, which had risen in support of the war effort and the postwar Marshall plan, decreased approximately 25 percent between 1945 and 1960. Coal demand in the post-war era up until the 1970s was characterized by increasing coal use by the electric utilities but decreasing coal use in many other markets (e.g., rail transportation). The oil price shocks of the 1970s, combined with natural gas shortages and problems with nuclear power, returned coal to a position of prominence. The greatly expanded use of coal was seen as a key building block in US energy strategies of the 1970s. Coal production increased from 613 million short tons per year in 1970 to 950 million short tons in 1988, up over 50 percent.

  18. Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. Technical progress report, December 31, 1992

    SciTech Connect (OSTI)

    Doyle, F.M.

    1992-12-31T23:59:59.000Z

    During the ninth quarter, electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania. Scanning electron microscopy and energy dispersive X-ray analysis were done to characterize the morphology and composition of the surface of as-received coal, oxidized coal and coal pyrite. In addition, electrokinetic tests were done on Upper Freeport coal pyrite.

  19. Respiratory disease in Utah coal miners

    SciTech Connect (OSTI)

    Rom, W.N.; Kanner, R.E.; Renzetti, A.D. Jr.; Shigeoka, J.W.; Barkman, H.W.; Nichols, M.; Turner, W.A.; Coleman, M.; Wright, W.E.

    1981-04-01T23:59:59.000Z

    Two hundred forty-two Utah underground coal miners volunteered to participate in a respiratory disease study. They were an older group (mean, 56 years of age) and had spent a mean of 29 years in the coal-mining industry. The prevalence of chronic bronchitis was 57%, and that of coal worker's pneumoconiosis, 25%; only one worker had progressive massive fibrosis. Significant impairment of pulmonary function was found among those with a history of cigarette smoking. Chronic bronchitis or coal worker's penumoconiosis among nonsmokers did not impair pulmonary function. There was a significant association among the nonsmokers between increasing exposure to coal dust and coal worker's pneumoconiosis, but not for changes in pulmonary function. Coal mine dust had a significant influence in causing the symptom complex of chronic cough and sputum production, and coal worker's pneumoconiosis.

  20. Respiratory disease in Utah coal miners

    SciTech Connect (OSTI)

    Rom, W.N.; Kanner, R.E.; Renzetti, A.D. Jr.; Shigeoka, J.W.; Barkman, H.W.; Nichols, M.; Turner, W.A.; Coleman, M.; Wright, W.E.

    1981-04-01T23:59:59.000Z

    Two hundred forty-two Utah underground coal miners volunteered to participate in a respiratory disease study. They were an older group (mean, 56 years of age) and had spent a mean of 29 years in the coal-mining industry. The prevalence of chronic bronchitis was 57%, and that of coal worker's pneumoconiosis, 25%; only one worker had progressive massive fibrosis. Significant impairment of pulmonary function was found among those with a history of cigarette smoking. Chronic bronchitis or coal worker's pneumoconiosis among nonsmokers did not impair pulmonary function. There was a significant association among the nonsmokers between increasing exposure to coal dust and coal worker's pneumoconiosis, but not for changes in pulmonary function. Coal mine dust had a significant influence in causing the symptom complex of chronic cough and sputum production, and coal worker's pneumoconiosis.

  1. Western Coal/Great Lakes Alternative export-coal conference

    SciTech Connect (OSTI)

    Not Available

    1981-01-01T23:59:59.000Z

    This conference dealt with using the Great Lakes/St. Lawrence Seaway as an alternative to the East and Gulf Coasts for the exporting of coal to Europe and the potential for a piece of the European market for the subbituminous coals of Montana and Wyoming. The topics discussed included: government policies on coal exports; the coal reserves of Montana; cost of rail transport from Western mines to Lake Superior; the planning, design, and operation of the Superior Midwest Energy Terminal at Superior, Wisconsin; direct transfer of coal from self-unloading lakers to large ocean vessels; concept of total transportation from mines to users; disadvantage of a nine month season on the Great Lakes; costs of maritime transport of coal through the Great Lakes to Europe; facilities at the ice-free, deep water port at Sept Iles; the use of Western coals from an environmental and economic viewpoint; the properties of Western coal and factors affecting its use; the feasibility of a slurry pipeline from the Powder River Basin to Lake Superior; a systems analysis of the complete hydraulic transport of coal from the mine to users in Europe; the performance of the COJA mill-burner for the combustion of superfine coal; demand for steam coal in Western Europe; and the effect the New Source Performance Standards will have on the production and use of Western coal. A separate abstract was prepared for each of the 19 papers for the Energy Data Base (EDB); 17 will appear in Energy Research Abstracts (ERA) and 11 in Energy Abstracts for Policy Analysis (EAPA). (CKK)

  2. Survey of nine surface mines in North America. [Nine different mines in USA and Canada

    SciTech Connect (OSTI)

    Hayes, L.G.; Brackett, R.D.; Floyd, F.D.

    1981-01-01T23:59:59.000Z

    This report presents the information gathered by three mining engineers in a 1980 survey of nine surface mines in the United States and Canada. The mines visited included seven coal mines, one copper mine, and one tar sands mine selected as representative of present state of the art in open pit, strip, and terrace pit mining. The purpose of the survey was to investigate mining methods, equipment requirements, operating costs, reclamation procedures and costs, and other aspects of current surface mining practices in order to acquire basic data for a study comparing conventional and terrace pit mining methods, particularly in deeper overburdens. The survey was conducted as part of a project under DOE Contract No. DE-AC01-79ET10023 titled The Development of Optimal Terrace Pit Coal Mining Systems.

  3. Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. [Coal pyrite electrodes

    SciTech Connect (OSTI)

    Doyle, F.M.

    1992-01-01T23:59:59.000Z

    The objective of this research is to develop a mechanistic understanding of the oxidation of coal and coal pyrite, and to correlate the intrinsic physical and chemical properties of these minerals, along with changes resulting from oxidation, with those surface properties that influence the behavior in physical cleaning processes. The results will provide fundamental insight into oxidation, in terms of the bulk and surface chemistry, the microstructure, and the semiconductor properties of the pyrite. During the eighth quarter, wet chemical and dry oxidation tests were done on Upper Freeport coal from the Troutville [number sign]2 Mine, Clearfield County, Pennsylvania. In addition electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania.

  4. Hardgrove grindability index and petrology used as an enhanced predictor of coal feed rate

    SciTech Connect (OSTI)

    Hower, J.C. (Univ. of Kentucky, KY (US))

    1990-01-01T23:59:59.000Z

    An improved predictor of coal pulverization behavior and coal feed rate is under development at the CAER based upon the interaction between Hardgrove Grindability Index (HGI) and coal petrology. With educated attention, this interaction may be a useful tool to enhance coal feed rates if cautiously extended to the mining environment where blends of coal lithotypes are produced.

  5. Method of underground mining by pillar extraction

    DOE Patents [OSTI]

    Bowen, Ray J. (1879 Delann, Salt Lake City, UT 84121); Bowen, William R. (1636 Sunnydale La., Salt Lake City, UT 84108)

    1980-08-12T23:59:59.000Z

    A method of sublevel caving and pillar and top coal extraction for mining thick coal seams includes the advance mining of rooms and crosscuts along the bottom of a seam to a height of about eight feet, and the retreat mining of the top coal from the rooms, crosscuts and portions of the pillars remaining from formation of the rooms and cross-cuts. In the retreat mining, a pocket is formed in a pillar, the top coal above the pocket is drilled, charged and shot, and then the fallen coal is loaded by a continuous miner so that the operator remains under a roof which has not been shot. The top coal from that portion of the room adjacent the pocket is then mined, and another pocket is formed in the pillar. The top coal above the second pocket is mined followed by the mining of the top coal of that portion of the room adjacent the second pocket, all by use of a continuous miner which allows the operator to remain under a roof portion which has not been shot.

  6. High-sulfur coals in the eastern Kentucky coal field

    SciTech Connect (OSTI)

    Hower, J.C.; Graham, U.M. (Univ. of Kentucky Center for Applied Energy Research, Lexington, KY (United States)); Eble, C.F. (Kentucky Geological Survey, Lexington, KY (United States))

    1993-08-01T23:59:59.000Z

    The Eastern Kentucky coal field is notable for relatively low-sulfur, [open quotes]compliance[close quotes] coals. Virtually all of the major coals in this area do have regions in which higher sulfur lithotypes are common, if not dominant, within the lithologic profile. Three Middle Pennsylvanian coals, each representing a major resource, exemplify this. The Clintwood coal bed is the stratigraphically lowest coal bed mined throughout the coal field. In Whitley County, the sulfur content increase from 0.6% at the base to nearly 12% in the top lithotype. Pyrite in the high-sulfur lithotype is a complex mixture of sub- to few-micron syngenetic forms and massive epigenetic growths. The stratigraphically higher Pond Creek coal bed is extensively mined in portions of the coal field. Although generally low in sulfur, in northern Pike and southern Martin counties the top one-third can have up to 6% sulfur. Uniformly low-sulfur profiles can occur within a few hundred meters of high-sulfur coal. Pyrite occurs as 10-50 [mu]m euhedra and coarser massive forms. In this case, sulfur distribution may have been controlled by sandstone channels in the overlying sediments. High-sulfur zones in the lower bench of the Fire Clay coal bed, the stratigraphically highest coal bed considered here, are more problematical. The lower bench, which is of highly variable thickness and quality, generally is overlain by a kaolinitic flint clay, the consequence of a volcanic ash fall into the peat swamp. In southern Perry and Letcher counties, a black, illite-chlorite clay directly overlies the lower bench. General lack of lateral continuity of lithotypes in the lower bench suggests that the precursor swamp consisted of discontinuous peat-forming environments that were spatially variable and regularly inundated by sediments. Some of the peat-forming areas may have been marshlike in character.

  7. Paramont's Black Bear No. 4 mine does it right, again

    SciTech Connect (OSTI)

    Sanda, A.

    2007-07-15T23:59:59.000Z

    The Paramont Coal Company Virginia, LLC, a subsidiary of Alpha Natural Resources, recently won the '2007 overall award for excellence in mining and reclamation from the Virginia Division of Mined Land Reclamation and the Virginia Mining Association. Coal People Magazine recently visited Black Bear No. 4 mine where a settling pond was being removed and stream bed placed to drain the area, part of the 451-acre award winning reclamation project. The article recounts discussions with mining engineers about the company's operations with emphasis on the Black Bear No. 4 mine. Black Bear No. 1 mine won five state and national awards last year for conservation and land management practices. 8 photos.

  8. A Demonstration System for Capturing Geothermal Energy from Mine...

    Open Energy Info (EERE)

    Technology Demonstration Projects Project Description Butte, Montana, like many other mining towns that developed because of either hard-rock minerals or coal, is underlain by...

  9. Mining and Gas and Oil Production (North Dakota)

    Broader source: Energy.gov [DOE]

    This chapter of the North Dakota Code contains provisions for oil, gas, and coal mining and the development of geothermal resources. This chapter addresses claims to mines, licensing and control of...

  10. Data mining, Data mining,

    E-Print Network [OSTI]

    Keinan, Alon

    18 Data mining, today and tomorrow Data mining, today and tomorrow We leave digital puddles useful information be extracted from this ever-growing ocean of data? Data mining is the science," says CS professor Johannes Gehrke, whose group has developed some of the fastest data-mining algo

  11. Hydrothermally treated coals for pulverized coal injection. Technical progress report, April 1995--June 1995

    SciTech Connect (OSTI)

    Walsh, D.E.; Rao, P.D.; Ogunsola, O.; Lin, H.K.

    1995-07-01T23:59:59.000Z

    This project is investigating the suitability of hydrothermally dried low-rank coals for pulverized fuel injection into blast furnaces in order to reduce coke consumption. Coal samples from the Beluga coal field and Usibelli Coal Mine, Alaska, are being used for the study. Crushed coal samples were hydrothermally treated at three temperatures, 275, 300 and 325{degrees}C, for residence times ranging from 10 to 120 minutes. Products have been characterized to determine their suitability for pulverized coal injection. Characterization includes proximate and ultimate analyses, vitrinite reflectance, TGA reactivity and thermochemical modeling. A literature survey has been conducted.

  12. The West Virginia Coal Economy February 2010

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Education Policy Commission or the governing boards of Marshall University and West Virginia University. #12-Quantifiable Economic Impacts on West Virginia 46-47 I. Reclaimed Coal Mine Sites 46 II. Corporate Responsibility

  13. Parameterization of solar flare dose 

    E-Print Network [OSTI]

    Lamarche, Anne Helene

    1995-01-01T23:59:59.000Z

    A critical aspect of missions to the Moon or Mars is the safety and health of the crew. Radiation in space is a hazard for astronauts, especially high-energy radiation following certain types of solar flares. A solar flare ...

  14. Solar Flares and particle acceleration

    E-Print Network [OSTI]

    of Glasgow, UK STFC Summer School, Armagh, 2012 #12;Solar flares: basics X-raysradiowavesParticles1AU Figure energy ~2 1032 ergs #12;"Standard" model of a solar flare/CME Solar corona T ~ 106 K => 0.1 keV per MeV Proton energies >100 MeV Large solar flare releases about 1032 ergs (about half energy

  15. Safer blasting agents and procedures for blasting in gassy non-coal mines. [Quarterly] technical progress report, January 1--March 31, 1993

    SciTech Connect (OSTI)

    Weiss, E.S.

    1993-11-01T23:59:59.000Z

    The US Bureau of Mines` research program is focused on developing procedures and guidelines for acceptable underground oil shale blasting that fulfill the operational requirements for efficiency while maintaining a high level of safety when operating under gassy mine conditions. This work is aimed at providing new information, alternate methods, and innovation in underground blasting procedures. The results from this research will have direct impact on regulatory standards for blasting under gassy mine conditions. Based on the low incendivity data from the Cannon Gallery and several months of recent testing in their mine, Kennecott`s Greens Creek base metal mine in Alaska had decided to exclusively use a low incendive bulk emulsion product in place of the low incendive water gel prod ct for all blasting operations. As was the case with the low incendive water gel product, the use of this bulk product resulted in: no dust ignitions and related injuries and/or production/equipment losses; the elimination if preblasting measures of using stemming and water sprays, and the improvement of roadways due to the reduction of water.

  16. Opportunities for Visual Resource Management in the Southern Appalachian Coal Basin1

    E-Print Network [OSTI]

    Standiford, Richard B.

    Opportunities for Visual Resource Management in the Southern Appalachian Coal Basin1 John W) in the southern Appalachian coal basin resulting from the Surface Mining Control and Reclamation Act. It focuses been concerned with the visual impacts resulting from the surface mined coal the agency purchases

  17. Coal surface control for advanced fine coal flotation

    SciTech Connect (OSTI)

    Fuerstenau, D.W.; Hanson, J.S.; Diao, J.; Harris, G.H.; De, A.; Sotillo, F. (California Univ., Berkeley, CA (United States)); Somasundaran, P.; Harris, C.C.; Vasudevan, T.; Liu, D.; Li, C. (Columbia Univ., New York, NY (United States)); Hu, W.; Zou, Y.; Chen, W. (Utah Univ., Salt Lake City, UT (United States)); Choudhry, V.; Shea, S.; Ghosh, A.; Sehgal, R. (Praxis Engineers, Inc., Milpitas, CA (United States))

    1992-03-01T23:59:59.000Z

    The initial goal of the research project was to develop methods of coal surface control in advanced froth flotation to achieve 90% pyritic sulfur rejection, while operating at Btu recoveries above 90% based on run-of-mine quality coal. Moreover, the technology is to concomitantly reduce the ash content significantly (to six percent or less) to provide a high-quality fuel to the boiler (ash removal also increases Btu content, which in turn decreases a coal's emission potential in terms of lbs SO{sub 2}/million Btu). (VC)

  18. Integrated coal cleaning, liquefaction, and gasification process

    DOE Patents [OSTI]

    Chervenak, Michael C. (Pennington, NJ)

    1980-01-01T23:59:59.000Z

    Coal is finely ground and cleaned so as to preferentially remove denser ash-containing particles along with some coal. The resulting cleaned coal portion having reduced ash content is then fed to a coal hydrogenation system for the production of desirable hydrocarbon gases and liquid products. The remaining ash-enriched coal portion is gasified to produce a synthesis gas, the ash is removed from the gasifier usually as slag, and the synthesis gas is shift converted with steam and purified to produce the high purity hydrogen needed in the coal hydrogenation system. This overall process increases the utilization of as-mined coal, reduces the problems associated with ash in the liquefaction-hydrogenation system, and permits a desirable simplification of a liquids-solids separation step otherwise required in the coal hydrogenation system.

  19. Coal River Mountain Redux Below is an update to the Coal River Mountain story that I described earlier in an e-mail, in an

    E-Print Network [OSTI]

    Hansen, James E.

    Coal River Mountain Redux Below is an update to the Coal River Mountain story that I described billion gallons of toxic coal sludge located directly above Marsh Fork Elementary School. (No word yet on their campus a couple of years ago. Underground Appalachian coal mining is being replaced in recent years

  20. Great Lakes ports coal handling capacity and export coal potential

    SciTech Connect (OSTI)

    Ames, A.H. Jr.

    1981-02-01T23:59:59.000Z

    This study was developed to determine the competitive position of the Great Lakes Region coal-loading ports in relation to other US coastal ranges. Due to the congestion at some US Atlantic coastal ports US coal producers have indicated a need for alternative export routes, including the Great Lakes-St. Lawrence Seaway System. The study assesses the regions coal handling capacity and price competitiveness along with the opportunity for increased US flag vessel service. A number of appendices are included showing major coal producers, railroad marketing representatives, US vessel operators, and port handling capacities and throughput. A rate analysis is provided including coal price at the mine, rail rate to port, port handling charges, water transportation rates to western Europe, Great Lakes route versus the US Atlantic Coast ports.

  1. Railroads and shippers clash over coal dust

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2007-11-15T23:59:59.000Z

    In an effort to reduce coal spillage from railcars, mines in the Powder River Basin (PRB) now load coal with a loaf profile but, reportedly, beginning in 2008, Burlington Northern Santa Fe (BNSF) will announce guidelines requiring all PRB coal loads to be sprayed with a chemical surfactant. If this does not fix the problem, greater measures will be taken. At the time of going to press, the details of how this would be implemented and regulated were unresolved. 1 photo.

  2. Curriculum Support Maps for the Study of Indiana Coal

    E-Print Network [OSTI]

    Polly, David

    Curriculum Support Maps for the Study of Indiana Coal By Walt Gray Targeted Age: High SchoolMap to create geographic information systems (GIS) maps to demonstrate the distribution of coal mines within comprehension of the data presented to them. It is expected that students have studied the process of coal

  3. Highwall miners extract coal cost effectively

    SciTech Connect (OSTI)

    NONE

    2009-08-15T23:59:59.000Z

    Contour Mining Corp's Powellton site in West Virginia has produced over 60,000 tons of coal per month using the Terex Highwall Mining System (HWM). The HWM can use a lower or high-seam cutter module. MTS Systems' Sensors Division provides mobile hydraulic magnetostrictive sensors for the HWM system, to increase the accuracy and reliability of linear positioning. 1 photo.

  4. A study of coal production in Nigeria

    SciTech Connect (OSTI)

    Akarakiri, J.B.; Afonja, A.A.; Okejiri, E.C. (Obafemi Awolowo Univ., Lle-Lfe (Nigeria))

    1991-01-01T23:59:59.000Z

    The Nigerian coal industry was studied. The focus was on the problems which have caused low production output of coal. More specifically, the study examined the present techniques of coal production, the causes of low production of coal, the coal production policy as it affected this study, and proposed policy measures to address the findings. It was discovered that some of the limiting factors to coal production in Nigeria could be attributed to the lack of the following: (i) clear and specific production-demand targets set for coal in Nigeria; (ii) adequate technological capability to mechanize coal mining operations in Nigeria; (iii) venture capital to invest in coal production; (iv) poor infrastructural facilities for coal production such as mining, storage, transportation, etc. It was also discovered that the dissatisfaction of the miners with their conditions of service influenced production capacity negatively. These findings point to the reality that coal is unlikely to play a major role in the country's energy equation in the near future unless serious efforts are made to address the above issues.

  5. Long term contracts, expansion, innovation and stability: North Dakota's lignite mines thrive

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2009-08-15T23:59:59.000Z

    North Dakota's lignite coal industry is mainly located in three countries in the central part of the state. Its large surface lignite mines are tied through long-term (20-40 years) contracts to power plants. The article talks about operations at three of the most productive mines - the Freedom mine, Falkirk mine and Center Mine. 4 figs.

  6. Gamma-ray burst flares: X-ray flaring. II

    SciTech Connect (OSTI)

    Swenson, C. A.; Roming, P. W. A., E-mail: cswenson@astro.psu.edu [Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States)

    2014-06-10T23:59:59.000Z

    We present a catalog of 498 flaring periods found in gamma-ray burst (GRB) light curves taken from the online Swift X-Ray Telescope GRB Catalogue. We analyzed 680 individual light curves using a flare detection method developed and used on our UV/optical GRB Flare Catalog. This method makes use of the Bayesian Information Criterion to analyze the residuals of fitted GRB light curves and statistically determines the optimal fit to the light curve residuals in an attempt to identify any additional features. These features, which we classify as flares, are identified by iteratively adding additional 'breaks' to the light curve. We find evidence of flaring in 326 of the analyzed light curves. For those light curves with flares, we find an average number of ?1.5 flares per GRB. As with the UV/optical, flaring in our sample is generally confined to the first 1000 s of the afterglow, but can be detected to beyond 10{sup 5} s. Only ?50% of the detected flares follow the 'classical' definition of ?t/t ? 0.5, with many of the largest flares exceeding this value.

  7. Annual bulletin of coal statistics for Europe-1983. [Europe, Canada, USA, USSR

    SciTech Connect (OSTI)

    Not Available

    1985-01-01T23:59:59.000Z

    This is a series of statistical tables documenting the production, trade, and consumption of coal in Europe, Canada, the United States, and the Soviet Union. Balance sheets of solid forms of energy are provided for hard coal, patent fuel, and coke; and for brown coal, brown coal briquettes, and brown coal coke. Data are provided on hard coal mines and on brown coal mines for production, employment and productivity of labor. Other tables list imports of solid fuels by country, exports of solid fuels by country, and world production of solid fuels.

  8. Potential for Coal-to-Liquids Conversion in the U.S.-Resource Base

    E-Print Network [OSTI]

    Patzek, Tadeusz W.

    Potential for Coal-to-Liquids Conversion in the U.S.-Resource Base Gregory D. Croft1 and Tad W the multi-Hubbert curve analysis to coal production in the United States, we demonstrate that anthracite production of this highest-rank coal. The pro- duction of bituminous coal from existing mines is about 80

  9. Environmental data energy technology characterizations: coal

    SciTech Connect (OSTI)

    Not Available

    1980-04-01T23:59:59.000Z

    This document describes the activities leading to the conversion of coal to electricity. Specifically, the activities consist of coal mining and beneficiation, coal transport, electric power generation, and power transmission. To enhance the usefulness of the material presented, resource requirements, energy products, and residuals for each activity area are normalized in terms of 10/sup 12/ Btus of energy produced. Thus, the total effect of producing electricity from coal can be determined by combining the residuals associated with the appropriate activity areas. Emissions from the coal cycle are highly dependent upon the type of coal consumed as well as the control technology assigned to the activity area. Each area is assumed to be equipped with currently available control technologies that meet environmental regulations. The conventional boiler, for example, has an electrostatic precipitator and a flue gas desulfurization scrubber. While this results in the removal of most of the particulate matter and sulfur dioxide in the flue gas stream, it creates other new environmental residuals -- solid waste, sludge, and ash. There are many different types of mined coal. For informational purposes, two types from two major producing regions, the East and the West, are characterized here. The eastern coal is typical of the Northern Appalachian coal district with a high sulfur and heat content. The western coal, from the Powder River Basin, has much less sulfur, but also has a substantially lower heating value.

  10. Trace elements in Illinois coals before and after conventional coal preparation

    SciTech Connect (OSTI)

    Demir, I.; Harvey, R.D.; Ruch, R.R.; Steele, J.D. [Illinois State Geological Survey, Champaign, IL (United States)] [and others

    1994-12-31T23:59:59.000Z

    Responding to recent technological advances and renewed environmental concerns requires improved characterization of Illinois and other US coals. Much of the existing trace element data on Illinois coals are on channel samples; these data need to be supplemented with data on an-shipped coals. Such data will provide a factual basis for the assessment of noxious emissions at coal-fired electric power plants. The purpose of this study was to determine the trace element concentration in as-shipped coals from Illinois mines, and compare the results to data on channel samples thast represent coal in place prior to mining. Radioactivity of the as-shipped samples was calculated from concentrations of uranium, thorium, and potassium in the samples.

  11. Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)

    Broader source: Energy.gov [DOE]

    This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

  12. Coal pump

    DOE Patents [OSTI]

    Bonin, John H. (Sunnyvale, CA); Meyer, John W. (Palo Alto, CA); Daniel, Jr., Arnold D. (Alameda County, CA)

    1983-01-01T23:59:59.000Z

    A device for pressurizing pulverized coal and circulating a carrier gas is disclosed. This device has utility in a coal gasification process and eliminates the need for a separate collection hopper and eliminates the separate compressor.

  13. Coal operators prepare for a prosperous new year

    SciTech Connect (OSTI)

    Fiscor, S.

    2008-01-15T23:59:59.000Z

    Results are given of the Coal Age 2008 annual Forecast Survey of 17 coal mining executives which reinforces that 2008 could be a very good year. Coal operators are planning to invest in new equipment, development and new coal mine start-ups, based on a number of demand- and supply-side fundamentals. 71% of those surveyed thought coal production in 2008 would increase from 2007 levels and US exports are expected to climb due to the weak dollar. If the tax credit on synfuels expires on 31 December 2007 production of coal synfuel will likely cease. Asked about expensive planned purchases, companies answers ranged from $80,000 for an underground scoop to $500 m for a new mine installation. However, most producers admit they will not be able to operate at full capacity. 7 figs.

  14. Paper accepted for presentation at the 11th Int. Conf. on Coal Science (ICCS-11),

    E-Print Network [OSTI]

    Zevenhoven, Ron

    Paper accepted for presentation at the 11th Int. Conf. on Coal Science (ICCS-11), San Francisco (CA near Kittilä north of Rovaniemi, Finland. In Finland there are many mining activities, mainly mining for metals (nickel, copper). But also talc and limestone is mined. There are 15 major active mines in Finland

  15. ANALYSIS OF MINING EXPLOSION PERFORMANCE WITH MULTIPLE

    E-Print Network [OSTI]

    Stump, Brian W.

    Limitations of Video Data · Effect of Blast Design on Near-Source Seismograms · Different Types of Cast Blasts of Models in Visualization ß Two-Dimensional Blast Model ß Three-Dimensional Blast Models 3. Applications to Different Types of Mining Explosions · Single Shot · Cast Blast · Coal Fragmentation #12;Analysis of Mining

  16. Parameterization of solar flare dose

    E-Print Network [OSTI]

    Lamarche, Anne Helene

    1995-01-01T23:59:59.000Z

    A critical aspect of missions to the Moon or Mars is the safety and health of the crew. Radiation in space is a hazard for astronauts, especially high-energy radiation following certain types of solar flares. A solar flare event can be very...

  17. ITP Mining: Energy and Environmental Profile of the U.S. Mining...

    Broader source: Energy.gov (indexed) [DOE]

    1 Combustion Engineering, Combustion-Fossil Power, Chapter 2-7, 1991. Coal 2-1 Energy and Environmental Profile of the U.S. Mining Industry Anthracite - Hard and very...

  18. High pressure water jet mining machine

    DOE Patents [OSTI]

    Barker, Clark R. (Rolla, MO)

    1981-05-05T23:59:59.000Z

    A high pressure water jet mining machine for the longwall mining of coal is described. The machine is generally in the shape of a plowshare and is advanced in the direction in which the coal is cut. The machine has mounted thereon a plurality of nozzle modules each containing a high pressure water jet nozzle disposed to oscillate in a particular plane. The nozzle modules are oriented to cut in vertical and horizontal planes on the leading edge of the machine and the coal so cut is cleaved off by the wedge-shaped body.

  19. US coal reserves: A review and update

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    This report is the third in series of ``U.S. Coal Reserves`` reports. As part of the Administration of the Energy Information Administration (EIA) program to provide information on coal, it presents detailed estimates of domestic coal reserves, which are basic to the analysis and forecasting of future coal supply. It also describes the data, methods, and assumptions used to develop such estimates and explain terminology related to recent data programs. In addition, the report provides technical documentation for specific revisions and adjustments to the demonstrated reserve base (DRB) of coal in the United States and for coal quality and reserve allocations. It makes the resulting data available for general use by the public. This report includes data on recoverable coal reserves located at active mines and on the estimated distribution of rank and sulfur content in those reserves. An analysis of the projected demand and depletion in recoverable reserves at active mines is used to evaluate the areas and magnitude of anticipated investment in new mining capacity.

  20. Distinct element modelling and mining induced subsidence: Influence of the major faults Modelisation des affaissements miniers :Influence des faules

    E-Print Network [OSTI]

    Boyer, Edmond

    , Nancy, France ABSTRACT :This study examines the subsidence due to Underground mining works in a coal mine in France. Coal is mined at a depth reaching 1000 m, according to longwall face method with caving. The seam ranges between 2 and 3.4 m in thickness. The dip strata does not exceed 10°. As predicted

  1. Compositional characteristics of the Fire Clay coal bed in a portion of eastern Kentucky

    SciTech Connect (OSTI)

    Hower, J.C.; Andrews, W.M. Jr.; Rimmer, S.M. (Univ. of Kentucky, Lexington (United States)); Eble, C.F. (Kentucky Geological Survey, Lexington (United States))

    1991-08-01T23:59:59.000Z

    The Fire Clay (Hazard No. 4) coal bed (Middle Pennsylvanian Breathitt Formation) is one of the most extensively mined coal in eastern Kentucky. The coal is used for metallurgical and steam end uses and, with its low sulfur content, should continue to be a prime steam coal. This study focuses on the petrology, mineralogy, ash geochemistry, and palynology of the coal in an eight 7.5-min quadrangle area of Leslie, Perry, Knott, and Letcher counties.

  2. A System for ThreeDimensional Robotic Mapping of Underground Mines

    E-Print Network [OSTI]

    mines. Our systems have been deployed in an operational coal mine in Bruceton, Pennsylvania, where for accurate maps of abandoned mines. Hazardous operating conditions and difficult access routes suggest and utilize accurate 2­D maps of flat mines. Similarly, Baily [14] reports 2­D mapping results of an un

  3. Speedy backfilling for old mines

    SciTech Connect (OSTI)

    Dyni, R.C. (Bureau of Mines, Philadelphia, PA (United States)); Burnett, M. (Burnett Associates, Inc., Farmingham, MA (United States))

    1993-09-01T23:59:59.000Z

    This article describes pneumatic equipment that can help fill the underground voids left by abandoned coal mines that threaten nearly half a million acres of densely populated urban areas in the US alone. In 1910, when coal was king in northeastern Pennsylvania, engineers built a 600 ft cut-and-cover tunnel to transport coal from a mine entrance to a rail siding in the town of Vandling. In December 1992, engineers filled it up. The tunnel, known as the Hillside Coal and Iron Slope, had been well designed and constructed. Where it crossed under a main road, the roof was reinforced by three concrete columns--protection against loads from trolley cars whose rails shared the road. In October 1991, a hole opened up in one of the town's roads, and a subsidence complaint brought investigators from the US Department of the Interior's Office of Surface Mining (OSM) in Wilkes Barre, Pa. The tunnel, which passes directly underneath several of Vandling's residential streets as well as State Highway 171, was declared a potential hazard. The OSM engineers decided that complete backfilling was necessary to support the tunnel roof. After remediating the original subsidence hole, they contacted the US Bureau of Mines and offered the tunnel as a field demonstration site for two new pneumatic backfilling devices. The demonstration, a success, completely filled the tunnel in only 23 working days.

  4. Corner-cutting mining assembly

    DOE Patents [OSTI]

    Bradley, J.A.

    1981-07-01T23:59:59.000Z

    This invention resulted from a contract with the United States Department of Energy and relates to a mining tool. More particularly, the invention relates to an assembly capable of drilling a hole having a square cross-sectional shape with radiused corners. In mining operations in which conventional auger-type drills are used to form a series of parallel, cylindrical holes in a coal seam, a large amount of coal remains in place in the seam because the shape of the holes leaves thick webs between the holes. A higher percentage of coal can be mined from a seam by a means capable of drilling holes having a substantially square cross section. It is an object of this invention to provide an improved mining apparatus by means of which the amount of coal recovered from a seam deposit can be increased. Another object of the invention is to provide a drilling assembly which cuts corners in a hole having a circular cross section. These objects and other advantages are attained by a preferred embodiment of the invention.

  5. NETL: Coal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Major Demonstrations Major Demonstrations Since 1985, we have helped fund commercial-scale clean coal technology demonstration projects. ICCS | CCPI | PPII | CCTDP | FutureGen...

  6. Coal slurry pipeline based midwest fuel hub

    SciTech Connect (OSTI)

    Huettenhain, H. [Bechtel Technology & Consulting San Francisco, CA (United States)

    1998-12-31T23:59:59.000Z

    Low sulfur Powder River Basin (PRB) coal is a sought after fuel to comply with the year 2000 emission regulation for utility boilers. PRB coal is presently not competitive East of the Mississippi mainly because of railroad switching requirements and boiler designs not compatible with the PRB fuel characteristics. The use of the Lakes for transportation is an exception. The Lakes shipping lanes however, are only open part of the year. It is proposed to construct a coal slurry pipeline from the center of Wyoming coalfields to a hub near Detroit with access to low cost waste energy from power generation stations. The coal slurry pipeline will transport up to 25 million tons per year of fine PRB coal which has been removed from the conventionally transported coal, namely coal transported by rail. The rail delivered coal will have less dust. The system fits the DOE Vision 21 concept to mine and utilize coal in highly efficient systems and with the least environmental impact. The PRB coal is of subbituminous rank and not directly compatible with the boilers in Michigan/Indiana/Ohio area, which are designed to burn bituminous coal. Upgrading of the PRB coal using the hydrothermal slurry upgrading process can transform the PRB coal into a higher Btu content fuel by removing a large portion of the inherent moisture. Such upgraded PRB coal has proven an excellent reactive fuel when burned conventionally as PC fuel, or even when burned in slurry form as Coal Water Fuel (CWF). The cost of the process can be recovered when the process is combined with a coal slurry pipeline transport system. The result is an upgraded competitive fuel or fuels, which can be used for co-firing or re-burning applications to reduce SO{sub 2} and NOx emissions of utility boilers. The fuels can be powdered for direct fuel injection into boilers or blast furnaces as well as CWF. Depending on the stability of the upgraded PRB coal, the pipeline product could also be dewatered and prepared for export. This paper describes the concept and preliminary cost information. It also reports on reactions of the industries, which could be involved in the complex system, namely, coal mining companies, railroads, pipeline operators, fuel suppliers, and utilities.

  7. Coal surface control for advanced fine coal flotation. Final report, October 1, 1988--March 31, 1992

    SciTech Connect (OSTI)

    Fuerstenau, D.W.; Hanson, J.S.; Diao, J.; Harris, G.H.; De, A.; Sotillo, F. [California Univ., Berkeley, CA (United States); Somasundaran, P.; Harris, C.C.; Vasudevan, T.; Liu, D.; Li, C. [Columbia Univ., New York, NY (United States); Hu, W.; Zou, Y.; Chen, W. [Utah Univ., Salt Lake City, UT (United States); Choudhry, V.; Shea, S.; Ghosh, A.; Sehgal, R. [Praxis Engineers, Inc., Milpitas, CA (United States)

    1992-03-01T23:59:59.000Z

    The initial goal of the research project was to develop methods of coal surface control in advanced froth flotation to achieve 90% pyritic sulfur rejection, while operating at Btu recoveries above 90% based on run-of-mine quality coal. Moreover, the technology is to concomitantly reduce the ash content significantly (to six percent or less) to provide a high-quality fuel to the boiler (ash removal also increases Btu content, which in turn decreases a coal`s emission potential in terms of lbs SO{sub 2}/million Btu). (VC)

  8. Mines and Mining (Maryland)

    Broader source: Energy.gov [DOE]

    It is the policy of the state to encourage the development of mined resources in Maryland while protecting the environment and public health and safety. This legislation establishes the Bureau of...

  9. Panel data analysis of U.S. coal productivity

    E-Print Network [OSTI]

    Stoker, Thomas M.

    2000-01-01T23:59:59.000Z

    We analyze labor productivity in coal mining in the United States using indices of productivity change associated with the concepts of panel data modeling. This approach is valuable when there is extensive heterogeneity ...

  10. Method for gasification of deep, thin coal seams

    DOE Patents [OSTI]

    Gregg, David W. (Moraga, CA)

    1982-01-01T23:59:59.000Z

    A method of gasification of coal in deep, thin seams by using controlled bending subsidence to confine gas flow to a region close to the unconsumed coal face. The injection point is moved sequentially around the perimeter of a coal removal area from a production well to sweep out the area to cause the controlled bending subsidence. The injection holes are drilled vertically into the coal seam through the overburden or horizontally into the seam from an exposed coal face. The method is particularly applicable to deep, thin seams found in the eastern United States and at abandoned strip mines where thin seams were surface mined into a hillside or down a modest dip until the overburden became too thick for further mining.

  11. Method for gasification of deep, thin coal seams. [DOE patent

    DOE Patents [OSTI]

    Gregg, D.W.

    1980-08-29T23:59:59.000Z

    A method of gasification of coal in deep, thin seams by using controlled bending subsidence to confine gas flow to a region close to the unconsumed coal face is given. The injection point is moved sequentially around the perimeter of a coal removal area from a production well to sweep out the area to cause the controlled bending subsidence. The injection holes are drilled vertically into the coal seam through the overburden or horizontally into the seam from an exposed coal face. The method is particularly applicable to deep, thin seams found in the eastern United States and at abandoned strip mines where thin seams were surface mined into a hillside or down a modest dip until the overburden became too thick for further mining.

  12. Florida Natural Gas Vented and Flared (Million Cubic Feet)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear Jan Feb Mar AprVented and Flared

  13. Florida Natural Gas Vented and Flared (Million Cubic Feet)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYear Jan Feb Mar AprVented and FlaredVented

  14. Illinois Natural Gas Vented and Flared (Million Cubic Feet)

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 TableTotal Consumption (MillionTotalVented and Flared

  15. Annual bulletin of coal statistics for Europe 1984

    SciTech Connect (OSTI)

    Not Available

    1986-01-01T23:59:59.000Z

    This book contains data on developments and trends involving solid fuels in the countries of Europe and in the United States, Canada, and the Soviet Union. It provides a balance sheet of solid forms of energy and details on the production, employment, and productivity of labor for hard coal mines and for brown coal mines. Also documented are imports and exports of solid fuels by country and the world production of solid fuels.

  16. New coal dewatering technology turns sludge to powder

    SciTech Connect (OSTI)

    NONE

    2009-03-15T23:59:59.000Z

    Virginian Tech's College of Engineering's Roe-Hoan Yoon and his group have developed a hyperbaric centrifuge that can dewater coal as fine as talcum powder. Such coal fines presently must be discarded by even the most advanced coal cleaning plants because of their high moisture content. The new technology can be used with the Microcel technology to remove ash, to re-mine the fine coal discarded to impoundments and to help minimize waste generation. Virginia Tech has received $1 million in funding from the US Department of State to also help the Indian coal industry produce a cleaner product. 1 photo.

  17. Outlook and Challenges for Chinese Coal

    SciTech Connect (OSTI)

    Aden, Nathaniel T.; Fridley, David G.; Zheng, Nina

    2008-06-20T23:59:59.000Z

    China has been, is, and will continue to be a coal-powered economy. The rapid growth of coal demand since 2001 has created deepening strains and bottlenecks that raise questions about supply security. Although China's coal is 'plentiful,' published academic and policy analyses indicate that peak production will likely occur between 2016 and 2029. Given the current economic growth trajectory, domestic production constraints will lead to a coal gap that is not likely to be filled with imports. Urbanization, heavy industry growth, and increasing per-capita consumption are the primary drivers of rising coal usage. In 2006, the power sector, iron and steel, and cement accounted for 71% of coal consumption. Power generation is becoming more efficient, but even extensive roll-out of the highest efficiency units could save only 14% of projected 2025 coal demand. If China follows Japan, steel production would peak by 2015; cement is likely to follow a similar trajectory. A fourth wedge of future coal consumption is likely to come from the burgeoning coal-liquefaction and chemicals industries. New demand from coal-to-liquids and coal-to-chemicals may add 450 million tonnes of coal demand by 2025. Efficient growth among these drivers indicates that China's annual coal demand will reach 4.2 to 4.7 billion tonnes by 2025. Central government support for nuclear and renewable energy has not been able to reduce China's growing dependence on coal for primary energy. Few substitution options exist: offsetting one year of recent coal demand growth would require over 107 billion cubic meters of natural gas, 48 GW of nuclear, or 86 GW of hydropower capacity. While these alternatives will continue to grow, the scale of development using existing technologies will be insufficient to substitute significant coal demand before 2025. The central role of heavy industry in GDP growth and the difficulty of substituting other fuels suggest that coal consumption is inextricably entwined with China's economy in its current mode of growth. Ongoing dependence on coal reduces China's ability to mitigate carbon dioxide emissions growth. If coal demand remains on its current growth path, carbon dioxide emissions from coal combustion alone would exceed total US energy-related carbon emissions by 2010. Broadening awareness of the environmental costs of coal mining, transport, and combustion is raising the pressure on Chinese policy makers to find alternative energy sources. Within China's coal-dominated energy system, domestic transportation has emerged as the largest bottleneck for coal industry growth and is likely to remain a constraint to further expansion. China is short of high-quality reserves, but is producing its best coal first. Declining quality will further strain production and transport. Transporting coal to users has overloaded the train system and dramatically increased truck use, raising transport oil demand. Growing international imports have helped to offset domestic transport bottlenecks. In the long term, import demand is likely to exceed 200 mt by 2025, significantly impacting regional markets. The looming coal gap threatens to derail China's growth path, possibly undermining political, economic, and social stability. High coal prices and domestic shortages will have regional and global effects. Regarding China's role as a global manufacturing center, a domestic coal gap will increase prices and constrain growth. Within the Asia-Pacific region, China's coal gap is likely to bring about increased competition with other coal-importing countries including Japan, South Korea, Taiwan, and India. As with petroleum, China may respond with a government-supported 'going-out' strategy of resource acquisition and vertical integration. Given its population and growing resource constraints, China may favor energy security, competitiveness, and local environmental protection over global climate change mitigation. The possibility of a large coal gap suggests that Chinese and international policy makers should maximize institutional and financial support

  18. Geology in coal resource utilization

    SciTech Connect (OSTI)

    Peters, D.C. (ed.)

    1991-01-01T23:59:59.000Z

    The 37 papers in this book were compiled with an overriding theme in mind: to provide the coal industry with a comprehensive source of information on how geology and geologic concepts can be applied to the many facets of coal resource location, extraction, and utilization. The chapters have been arranged to address the major coal geology subfields of Exploration and Reserve Definition, Reserve Estimation, Coalbed Methane, Underground Coal Gasification, Mining, Coal Quality Concerns, and Environmental Impacts, with papers distributed on the basis of their primary emphasis. To help guide one through the collection, the author has included prefaces at the beginning of each chapter. They are intended as a brief lead-in to the subject of the chapter and an acknowledgement of the papers' connections to the subject and contributions to the chapter. In addition, a brief cross-reference section has been included in each preface to help one find papers of interest in other chapters. The subfields of coal geology are intimately intertwined, and investigations in one area may impact problems in another area. Some subfields tend to blur at their edges, such as with reserve definition and reserve estimation. Papers have been processed separately for inclusion on the data base.

  19. Shipping Data Generation for the Hunter Valley Coal Chain

    E-Print Network [OSTI]

    2013-02-02T23:59:59.000Z

    demand for coal is expected to double in the next decade. ..... not unexpected either as it is a response to changes in the quality of coal extracted ..... Since the model is actually building trips, by determining the tonnage sourced from a mine for.

  20. Polish coal industry - the way ahead

    SciTech Connect (OSTI)

    Swiss, M.

    1982-11-01T23:59:59.000Z

    Information is given on Polish coal reserves showing the types of coal in different regions. Long-range plans for the industry have been formulated, calling for the opening of many new mines during the next 50 years. Coal exports have played an important part in the country's economy by providing hard currency. Exports were 41.4 million tons in 1979, but fell to 31 million tons in 1980 as a result of the country's domestic problems. It is hoped to recapture the export market.

  1. Health effects of coal technologies: research needs

    SciTech Connect (OSTI)

    Not Available

    1980-09-01T23:59:59.000Z

    In this 1977 Environmental Message, President Carter directed the establishment of a joint program to identify the health and environmental problems associated with advanced energy technologies and to review the adequacy of present research programs. In response to the President's directive, representatives of three agencies formed the Federal Interagency Committee on the Health and Environmental Effects of Energy Technologies. This report was prepared by the Health Effects Working Group on Coal Technologies for the Committee. In this report, the major health-related problems associated with conventional coal mining, storage, transportation, and combustion, and with chemical coal cleaning, in situ gasification, fluidized bed combustion, magnetohydrodynamic combustion, cocombustion of coal-oil mixtures, and cocombustion of coal with municipal solid waste are identified. The report also contains recommended research required to address the identified problems.

  2. Coal industry annual 1994

    SciTech Connect (OSTI)

    NONE

    1995-10-01T23:59:59.000Z

    This report presents data on coal consumption, distribution, coal stocks, quality, prices, coal production information, and emissions for a wide audience.

  3. Coal assessment and coal quality characterization of the Colorado Plateau area

    SciTech Connect (OSTI)

    Affolter, R.H.; Brownfield, M.E.; Biewick, L.H.; Kirschbaum, M.A. [Geological Survey, Denver, CO (United States)

    1998-12-31T23:59:59.000Z

    The goal of the Colorado Plateau Coal Assessment project is to provide an overview of the geologic setting, distribution, resources, and quality of Cretaceous coal in the Colorado Plateau and southernmost Green River Basin. Resources will be estimated by applying restrictions such as coal thickness and depth and will be categorized by land ownership. In some areas these studies will also delineate areas where coal mining may be restricted because of land use, industrial, social, or environmental factors. Emphasis will be placed on areas where the coal is owned or managed by the Federal Government. This assessment, which is part of the US Geological Survey`s National Coal Assessment Program, is different from previous coal assessments in that the major emphasis will be placed on coals that can provide energy for the next few decades. The data is also being collected and stored in digital format that can be updated when new pertinent information becomes available. This study is being completed in cooperation with the US Bureau of Land Management, the US Forest Service, Arizona Geological Survey, Colorado Geological Survey, New Mexico Bureau of Mines and Mineral Resources, and the Utah Geological Survey.

  4. POST MINING MANAGEMENT IN FRANCE : SITUATION AND PERSPECTIVES DIDIER Christophe

    E-Print Network [OSTI]

    Boyer, Edmond

    emissions, flooding events or environmental impacts. Those kinds of disorders strongly influence the land to that period was mainly "hand-made", into a real industry. This leads to the large mining basins (coal, iron

  5. Coal remains a hot commodity for Australia

    SciTech Connect (OSTI)

    Bram, L.

    2006-02-15T23:59:59.000Z

    Based largely on analyses by the Australian Bureau of Agricultural and Resource Economics in late 2005 and early 2006, the article looks at the recent and near future export market for Australian coal. Demand in Asia is growing; European demand remains steady. Developments existing and new mines in Queensland are summarised in the article. 3 tabs.

  6. Mining (Montana)

    Broader source: Energy.gov [DOE]

    This section provides general rules and regulations pertaining to mining practices in the state of Montana. It addresses mining locations and claims, procedures for rights-of-way and eminent domain...

  7. Injury experience in stone mining, 1992

    SciTech Connect (OSTI)

    Not Available

    1994-05-01T23:59:59.000Z

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of stone mining in the United States for 1992. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and principal type of mineral. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison with other metal and nonmetallic mineral mining industries and with coal mining, summary reference tabulations are included at the end of both the operator and the contractor sections of this report.

  8. Underground coal gasification: A near-term alternate fuel

    SciTech Connect (OSTI)

    Avasthi, J.; Singleton, A.M.

    1984-06-01T23:59:59.000Z

    Since the beginning of this century underground coal gasification has been considered as an alternative to mining as a means of utilizing the coal resources not recoverable by conventional methods. The energy crunch of the seventies gave a new impetus to it, and several tests were conducted in the U.S. to demonstrate the feasibility of this method in both horizontal and steeply dipping coal resources. Gulf Research and Development Company has conducted two successful underground coal gasification tests near Rawlins, Wyoming, in steeply dipping coal beds. The results of these tests indicate that the present state of the art is advanced enough for utilization of this technique for commercial purposes. A right combination of resource, consumer, and economic factors will dictate future commercialization of underground coal gasification for the U.S. coal resources.

  9. Recovering Flare Gas Energy - A Different Approach

    E-Print Network [OSTI]

    Brenner, W.

    depend on a compressor to pull suction on the pressurized flare line and pump the gas into a plant-wide fuer gas system. Because SunOlin shares its flare system with an adjacent oil refinery, any change to the flare system operation could have far... design and operating scheme incorporating the results of the HAZOP study. The major features of our flare gas recovery system, then, are as follows: A 30" main flare gas header originating in the adjacent oil refinery is routed through the Sun...

  10. Method for in situ biological conversion of coal to methane

    DOE Patents [OSTI]

    Volkwein, Jon C. (Pittsburgh, PA)

    1995-01-01T23:59:59.000Z

    A method and apparatus are provided for the in situ biological conversion of coal to methane comprising culturing on a coal-containing substrate a consortium of microorganisms capable of degrading the coal into methane under suitable conditions. This consortium of microorganisms can be obtained from an underground cavity such as an abandoned mine which underwent a change from being supplied with sewage to where no sewage was present, since these conditions have favored the development of microorganisms capable of using coal as a carbon source and converting coal to methane. The consortium of microorganisms obtained from such abandoned coal mines can be isolated and introduced to hard-to-reach coal-containing substrates which lack such microorganisms and which would otherwise remain unrecoverable. The present invention comprises a significant advantage in that useable energy can be obtained from a number of abandoned mine sites or other areas wherein coal is no longer being recovered, and such energy can be obtained in a safe, efficient, and inexpensive manner.

  11. Alaska Regional Energy Resources Planning Project. Phase 2: coal, hydroelectric and energy alternatives. Volume I. Beluga Coal District Analysis

    SciTech Connect (OSTI)

    Rutledge, G.; Lane, D.; Edblom, G.

    1980-01-01T23:59:59.000Z

    This volume deals with the problems and procedures inherent in the development of the Beluga Coal District. Socio-economic implications of the development and management alternatives are discussed. A review of permits and approvals necessary for the initial development of Beluga Coal Field is presented. Major land tenure issues in the Beluga Coal District as well as existing transportation routes and proposed routes and sites are discussed. The various coal technologies which might be employed at Beluga are described. Transportation options and associated costs of transporting coal from the mine site area to a connecting point with a major, longer distance transportation made and of transporting coal both within and outside (exportation) the state are discussed. Some environmental issues involved in the development of the Beluga Coal Field are presented. (DMC)

  12. Department of MINING ENGINEERING

    E-Print Network [OSTI]

    Simons, Jack

    AS A MINING ENGINEER IMAGINE IMAGINE Department of MINING ENGINEERING THE UNIVERSITY OF UTAH www.mining

  13. An Army of Amazons: The Language of Protest in a Kansas Mining Community

    E-Print Network [OSTI]

    Schofield, Ann M.

    1985-12-01T23:59:59.000Z

    and Warren Van Tine, John L. Lewis: A Biography (New York: Quadrangle, 1979), 115. See also Joseph Skubitz, Jr., "A History of the Development of Deep Mine Production in Crawford County and the Factors that Have Influenced It," M.S. Thesis, Kansas State... of American communities are John Benson, British Coal Mining in the Nineteenth Century: A Social History (New York: Holmes and Meier Publishers, Inc., 1980) and Michael Hanies, "Fertility, Nuptiality, and Occupation: A Study of Coal Mining Populations...

  14. Data Mining 4.6. " "

    E-Print Network [OSTI]

    Mustakerov, Ivan

    1 . . Data Mining "" 4.6. " " ( 01.01.12. "") . . .. 2012. .- - - , , .". . ", .2. : : Data Mining #12;3 (Data Mining) - 20-25 . , , , , , . , (Data Mining) , , , , . Data Mining . Data Mining

  15. Oxidation of coal and coal pyrite mechanisms and influence on surface characteristics. Technical progress report, September 30, 1992

    SciTech Connect (OSTI)

    Doyle, F.M.

    1992-12-31T23:59:59.000Z

    The objective of this research is to develop a mechanistic understanding of the oxidation of coal and coal pyrite, and to correlate the intrinsic physical and chemical properties of these minerals, along with changes resulting from oxidation, with those surface properties that influence the behavior in physical cleaning processes. The results will provide fundamental insight into oxidation, in terms of the bulk and surface chemistry, the microstructure, and the semiconductor properties of the pyrite. During the eighth quarter, wet chemical and dry oxidation tests were done on Upper Freeport coal from the Troutville {number_sign}2 Mine, Clearfield County, Pennsylvania. In addition electrochemical experiments were done on electrodes prepared from Upper Freeport coal pyrite and Pittsburgh coal pyrite samples provided by the US Bureau of Mines, Pittsburgh Research Center, Pennsylvania.

  16. Data Mining Students' Ordinary Handwritten Coursework

    E-Print Network [OSTI]

    Herold, James

    2013-01-01T23:59:59.000Z

    Data Mining . . . . . . . . . . . . . . . . . . . . . . .Mining . . . . . . . . . . . . . . . . . . . . . . . . .Sequence Mining 6.1 Introduction . . . . . . . . .

  17. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    Pollutants Associated With Coal Combustion. • E.P.A.Control Guidelines for Coal-Derived Pollutants .Forms of Sulfur in Coal • . . . . Coal Desulfurization

  18. UTILIZATION OF SEISMIC AND INFRASOUND SIGNALS FOR CHARACTERIZING MINING EXPLOSIONS

    E-Print Network [OSTI]

    Stump, Brian W.

    on the Western US, where a variety of different types of mining operations exist, ranging from surface coal cast and the Tyrone Mine in New Mexico. The seismo- acoustic station at Ft. Hancock, Texas, and the infrasound upgrade of large-scale cast blasts in Wyoming, copper fragmentation blasts in Arizona and New Mexico, and taconite

  19. Hydrochemical Impacts of Limestone Rock Mining Ghinwa M. Naja & Rosanna Rivero &

    E-Print Network [OSTI]

    Demers, Nora Egan

    . 2002). Even though the environmental impacts of ore and coal mining have been adequately investigatedHydrochemical Impacts of Limestone Rock Mining Ghinwa M. Naja & Rosanna Rivero & Stephen E. Davis B.V. 2010 Abstract Hydrochemical impacts of shallow rock industrial-scale mining activities close

  20. A System for Three-Dimensional Robotic Mapping of Underground Mines

    E-Print Network [OSTI]

    systems have been deployed in an operational coal mine in Bruceton, Pennsylvania, where they have been of abandoned mines. Hazardous operating conditions and difficult access routes suggest that robotic exploration accurate 2-D maps of flat mines. Similarly, Baily [14] reports 2-D mapping results of an un- derground area

  1. Magnetic reconnection configurations and particle acceleration in solar flares

    E-Print Network [OSTI]

    Chen, P. F.

    types of solar flares. Upper panel: two-ribbon flares; Lower panel: compact flares. The color shows space under different magnetic configurations. Key words: solar flares, magnetic reconnection, particleMagnetic reconnection configurations and particle acceleration in solar flares P. F. Chen, W. J

  2. ENCOAL Mild Coal Gasification Project. Annual report, October 1990--September 1991

    SciTech Connect (OSTI)

    Not Available

    1992-02-01T23:59:59.000Z

    ENCOAL Corporation, a wholly-owned subsidiary of Shell Mining Company, is constructing a mild gasification demonstration plant at Triton Coal Company`s Buckskin Mine near Gillette, Wyoming. The process, using Liquids From Coal (LFC) technology developed by Shell and SGI International, utilizes low-sulfur Powder River Basin Coal to produce two new fuels, Process Derived Fuel (PDF) and Coal Derived Liquids (CDL). The products, as alternative fuels sources, are expected to significantly reduce current sulfur emissions at industrial and utility boiler sites throughout the nation, thereby reducing pollutants causing acid rain.

  3. Coal stratigraphy of deeper part of Black Warrior basin in Alabama

    SciTech Connect (OSTI)

    Thomas, W.A.; Womack, S.H.

    1983-09-01T23:59:59.000Z

    The Warrior coal field of Alabama is stratigraphically in the upper part of the Lower Pennsylvanian Pottsville Formation and structurally in the eastern part of the Black Warrior foreland basin. The productive coal beds extend southwestward from the mining area downdip into the deeper part of the Black Warrior structural basin. Because the deep part of the basin is beyond the limits of conventional coal exploration, study of the stratigraphy of coal beds must rely on data from petroleum wells. Relative abundance of coal can be stated in terms of numbers of beds, but because of the limitations of the available data, thicknesses of coals presently are not accurately determined. The lower sandstone-rich coal-poor part of the Pottsville has been interpreted as barrier sediments in the mining area. To the southwest in the deeper Black Warrior basin, coal beds are more numerous within the sandstone-dominated sequence. The coal-productive upper Pottsville is informally divided into coal groups each of which includes several coal beds. The Black Creek, Mary Lee, and Utley coal groups are associated with northeast-trending delta-distributary sandstones. The areas of most numerous coals also trend northeastward and are laterally adjacent to relatively thick distributary sandstones, suggesting coal accumulation in backswamp environments. The most numerous coals in the Pratt coal group are in an area that trends northwestward parallel with and southwest of a northwest-trending linear sandstone, suggesting coal accumulation in a back-barrier environment. Equivalents of the Cobb, Gwin, and Brookwood coal groups contain little coal in the deep part of the Black Warrior basin.

  4. Upgrading low rank coal using the Koppelman Series C process

    SciTech Connect (OSTI)

    Merriam, N.W., Western Research Institute

    1998-01-01T23:59:59.000Z

    Development of the K-Fuel technology began after the energy shortage of the early 1970s in the United States led energy producers to develop the huge deposits of low-sulfur coal in the Powder River Basin (PRB) of Wyoming. PRB coal is a subbituminous C coal containing about 30 wt % moisture and having heating values of about 18.6 megajoules/kg (8150 Btu/lb). PRB coal contains from 0.3 to 0.5 wt % sulfur, which is nearly all combined with the organic matrix in the coal. It is in much demand for boiler fuel because of the low-sulfur content and the low price. However, the low-heating value limits the markets for PRB coal to boilers specially designed for the high- moisture coal. Thus, the advantages of the low-sulfur content are not available to many potential customers having boilers that were designed for bituminous coal. This year about 250 million tons of coal is shipped from the Powder River Basin of Wyoming. The high- moisture content and, consequently, the low-heating value of this coal causes the transportation and combustion of the coal to be inefficient. When the moisture is removed and the heating value increased the same bundle of energy can be shipped using one- third less train loads. Also, the dried product can be burned much more efficiently in boiler systems. This increase in efficiency reduces the carbon dioxide emissions caused by use of the low-heating value coal. Also, the processing used to remove water and restructure the coal removes sulfur, nitrogen, mercury, and chlorides from the coal. This precombustion cleaning is much less costly than stack scrubbing. PRB coal, and other low-rank coals, tend to be highly reactive when freshly mined. These reactive coals must be mixed regularly (every week or two) when fresh, but become somewhat more stable after they have aged for several weeks. PRB coal is relatively dusty and subject to self-ignition compared to bituminous coals. When dried using conventional technology, PRB coal is even more dusty and more susceptible to spontaneous combustion than the raw coal. Also, PRB coal, if dried at low temperature, typically readsorbs about two- thirds of the moisture removed by drying. This readsorption of moisture releases the heat of adsorption of the water which is a major cause of self- heating of low-rank coals at low temperature.

  5. Underground Coal Thermal Treatment Task 6 Topical Report, Utah Clean Coal Program

    SciTech Connect (OSTI)

    Smith, P.J.; Deo, M.; Edding, E.G.; Hradisky, M.; Kelly, K.E.; Krumm, R.; Sarofim, Adel; Wang, D.

    2014-08-15T23:59:59.000Z

    The long-term objective of this task is to develop a transformational energy production technology by in- situ thermal treatment of a coal seam for the production of substitute natural gas and/or liquid transportation fuels while leaving much of the coal’s carbon in the ground. This process converts coal to a high-efficiency, low-greenhouse gas (GHG) emitting fuel. It holds the potential of providing environmentally acceptable access to previously unusable coal resources. This task focused on three areas: • Experimental. The Underground Coal Thermal Treatment (UCTT) team focused on experiments at two scales, bench-top and slightly larger, to develop data to understand the feasibility of a UCTT process as well as to develop validation/uncertainty quantification (V/UQ) data for the simulation team. • Simulation. The investigators completed development of High Performance Computing (HPC) simulations of UCTT. This built on our simulation developments over the course of the task and included the application of Computational Fluid Dynamics (CFD)- based tools to perform HPC simulations of a realistically sized domain representative of an actual coal field located in Utah. • CO2 storage. In order to help determine the amount of CO2 that can be sequestered in a coal formation that has undergone UCTT, adsorption isotherms were performed on coals treated to 325, 450, and 600°C with slow heating rates. Raw material was sourced from the Sufco (Utah), Carlinville (Illinois), and North Antelope (Wyoming) mines. The study indicated that adsorptive capacity for the coals increased with treatment temperature and that coals treated to 325°C showed less or similar capacity to the untreated coals.

  6. ENCOAL Mild Coal Gasification Demonstration Project. Annual report, October 1993--September 1994

    SciTech Connect (OSTI)

    NONE

    1995-03-01T23:59:59.000Z

    ENCOAL Corporation, a wholly-owned subsidiary of SMC Mining Company (formerly Shell Mining Company, now owned by Zeigler Coal Holding Company), has completed the construction and start-up of a mild gasification demonstration plant at Triton Coal Company`s Buckskin Mine near Gillette, Wyoming. The process, using Liquids From Coal (LFC) technology developed by SMC and SGI International, utilizes low-sulfur Powder River Basin coal to produce two new fuels, Process Derived Fuel (PDF) and Coal Derived Liquids (CDL). The LFC technology uses a mild pyrolysis or mild gasification process which involves heating the coal under carefully controlled conditions. The process causes chemical changes in the feed coal in contrast to conventional drying, which leads only to physical changes. Wet subbituminous coal contains considerable water, and conventional drying processes physically remove some of this moisture, causing the heating value to increase. The deeper the coal is physically dried, the higher the heating value and the more the pore structure permanently collapses, preventing resorption of moisture. However, deeply dried Powder River Basin coals exhibit significant stability problems when dried by conventional thermal processes. The LFC process overcomes these stability problems by thermally altering the solid to create PDF and CDL. Several of the major objectives of the ENCOAL Project have now been achieved. The LFC Technology has been essentially demonstrated. Significant quantities of specification CDL have been produced from Buckskin coal. Plant operation in a production mode with respectable availability (approaching 90%) has been demonstrated.

  7. Pumping carbon out of underground coal deposits

    SciTech Connect (OSTI)

    Steinberg, M.

    1999-07-01T23:59:59.000Z

    Thin steam and deep coal deposits are difficult and costly to mine. Underground coal gasification (UCG) with air or oxygen was thought to alleviate this problem. Experimental field tests were conducted in Wyoming and Illinois. Problems were encountered concerning a clear path for the team gasification to take place and removal of gas. The high endothermic heat of reaction requiring large quantities of steam and oxygen makes the process expensive. Safety problems due to incomplete reaction is also of concern. A new approach is proposed which can remedy most of these drawbacks for extracting energy from underground coal deposits. It is proposed to hydrogasify the coal underground with a heated hydrogen gas stream under pressure to produce a methane-rich gas effluent stream. The hydrogasification of coal is essentially exothermic so that no steam or oxygen is required. The gases formed are always in a reducing atmosphere making the process safe. The hydrogen is obtained by thermally decomposing the effluent methane above ground to elemental carbon and hydrogen. The hydrogen is returned underground for further hydrogasification of the coal seam. The small amount of oxygen and sulfur in the coal can be processed out above ground by removal as water and H{sub 2}S. Any CO can be removed by a methanation step returning the methane to process. The ash remains in the ground and the elemental carbon produced is the purest form of coal. The particulate carbon can be slurried with water to produce a fuel stream that can be fed to a turbine for efficient combined cycle power plants with lower CO{sub 2} emissions. Coal cannot be used for combined cycle because of its ash and sulfur content destroys the gas turbine. Depending on its composition of coal seam some excess hydrogen is also produced. Hydrogen is, thus, used to pump pure carbon out of the ground.

  8. Microbial solubilization of coal

    DOE Patents [OSTI]

    Strandberg, G.W.; Lewis, S.N.

    1988-01-21T23:59:59.000Z

    The present invention relates to a cell-free preparation and process for the microbial solubilization of coal into solubilized coal products. More specifically, the present invention relates to bacterial solubilization of coal into solubilized coal products and a cell-free bacterial byproduct useful for solubilizing coal. 5 tabs.

  9. Monitoring of FR Cnc Flaring Activity

    E-Print Network [OSTI]

    A. Golovin; M. Andreev; E. Pavlenko; Yu. Kuznyetsova; V. Krushevska; A. Sergeev

    2007-12-10T23:59:59.000Z

    Being excited by the detection of the first ever-observed optical flare in FR Cnc, we decided to continue photometrical monitoring of this object. The observations were carried out at Crimean Astrophysical Observatory (Crimea, Ukraine; CrAO - hereafter) and at the Terskol Observatory (Russia, Northern Caucasus). The obtained lightcurves are presented and discussed. No distinguishable flares were detected that could imply that flares on FR Cnc are very rare event.

  10. Clean coal

    SciTech Connect (OSTI)

    Liang-Shih Fan; Fanxing Li [Ohio State University, OH (United States). Dept. of Chemical and Biomolecular Engineering

    2006-07-15T23:59:59.000Z

    The article describes the physics-based techniques that are helping in clean coal conversion processes. The major challenge is to find a cost- effective way to remove carbon dioxide from the flue gas of power plants. One industrially proven method is to dissolve CO{sub 2} in the solvent monoethanolamine (MEA) at a temperature of 38{sup o}C and then release it from the solvent in another unit when heated to 150{sup o}C. This produces CO{sub 2} ready for sequestration. Research is in progress with alternative solvents that require less energy. Another technique is to use enriched oxygen in place of air in the combustion process which produces CO{sub 2} ready for sequestration. A process that is more attractive from an energy management viewpoint is to gasify coal so that it is partially oxidized, producing a fuel while consuming significantly less oxygen. Several IGCC schemes are in operation which produce syngas for use as a feedstock, in addition to electricity and hydrogen. These schemes are costly as they require an air separation unit. Novel approaches to coal gasification based on 'membrane separation' or chemical looping could reduce the costs significantly while effectively capturing carbon dioxide. 1 ref., 2 figs., 1 photo.

  11. Reducing Emissions in Plant Flaring Operations

    E-Print Network [OSTI]

    Duck, B.

    2011-01-01T23:59:59.000Z

    -05-10 Proceedings of the 2011 Industrial Energy Technology Conference New Orleans, Louisiana, May 17-19, 2011 over 12 inches per hour. The pilot system incorporates a windshield, strainer and a true premix burner capable of firing in 0% oxygen environments... of the knockout drum since all the flare gases are available at this single point. Compressors take suction from the flare gas header and compress and cool it for reuse in the refinery fuel gas system. As flare gas flows through the flare header...

  12. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    flow sheet of a K-T coal gasification complex for producingslag or bottom ash, coal gasification, or coal liquefactionCoal (Ref. 46). COAL PREPARATION GASIFICATION 3 K·T GASI FI

  13. CO2 Sequestration Potential of Texas Low-Rank Coals

    SciTech Connect (OSTI)

    Duane A. McVay; Walter B. Ayers Jr; Jerry L. Jensen

    2003-07-01T23:59:59.000Z

    The objective of this project is to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objectives for this reporting period were to further characterize the three areas selected as potential test sites, to begin assessing regional attributes of natural coal fractures (cleats), which control coalbed permeability, and to interview laboratories for coal sample testing. An additional objective was to initiate discussions with an operating company that has interests in Texas coalbed gas production and CO{sub 2} sequestration potential, to determine their interest in participation and cost sharing in this project. Well-log data are critical for defining depth, thickness, number, and grouping of coal seams at the proposed sequestration sites. Therefore, we purchased 15 well logs from a commercial source to make coal-occurrence maps and cross sections. Log suites included gamma ray (GR), self potential (SP), resistivity, sonic, and density curves. Other properties of the coals in the selected areas were collected from published literature. To assess cleat properties and describe coal characteristics, we made field trips to a Jackson coal outcrop and visited Wilcox coal exposures at the Sandow surface mine. Coal samples at the Sandow mine were collected for CO{sub 2} and methane sorption analyses. We contacted several laboratories that specialize in analyzing coals and selected a laboratory, submitting the Sandow Wilcox coals for analysis. To address the issue of cost sharing, we had fruitful initial discussions with a petroleum corporation in Houston. We reviewed the objectives and status of this project, discussed data that they have already collected, and explored the potential for cooperative data acquisition and exchange in the future. We are pursuing a cooperative agreement with them.

  14. Coal liquefaction and hydrogenation

    DOE Patents [OSTI]

    Schindler, Harvey D. (Fair Lawn, NJ); Chen, James M. (Edison, NJ)

    1985-01-01T23:59:59.000Z

    Disclosed is a coal liquefaction process using two stages. The first stage liquefies the coal and maximizes the product while the second stage hydrocracks the remainder of the coal liquid to produce solvent.

  15. alberta flare research: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    O. Terry 5 FLARE: Fast Layout for Augmented Reality Applications Microsoft Research Energy Storage, Conversion and Utilization Websites Summary: FLARE: Fast Layout for Augmented...

  16. Coprolites and fecal pellets in a late carboniferous coal swamp: morphologic and paleoecologic analysis

    E-Print Network [OSTI]

    Cutlip, Paul G

    1997-01-01T23:59:59.000Z

    Permineralized peats provide an excellent opportunity to study the ecology of the coal swamps of the Upper Carboniferous. In this study, I examine the coprolites and fecal pellet accumulations in pertnineralized peats from the Williamson No. 3 mine...

  17. Coal combustion science

    SciTech Connect (OSTI)

    Hardesty, D.R. (ed.); Baxter, L.L.; Fletcher, T.H.; Mitchell, R.E.

    1990-11-01T23:59:59.000Z

    The objective of this activity is to support the Office of Fossil Energy in executing research on coal combustion science. This activity consists of basic research on coal combustion that supports both the Pittsburgh Energy Technology Center (PETC) Direct Utilization Advanced Research and Technology Development Program, and the International Energy Agency (IEA) Coal Combustion Science Project. Specific tasks include: coal devolatilization, coal char combustion, and fate of mineral matter during coal combustion. 91 refs., 40 figs., 9 tabs.

  18. An assessment of the quality of selected EIA data series: Coal data, 1983--1988

    SciTech Connect (OSTI)

    Not Available

    1991-11-25T23:59:59.000Z

    The purpose of this report is to present information on the quality of some of the Energy Information Administration`s (EIA) coal data. This report contains discussions of data on production, direct labor hours, recoverable reserves, and prices from 1983 through 1988. Chapter 2 of this report presents a summary of the EIA coal data collection and identifies other sources providing similar data. Chapters 3 and 4 focus on data on coal production and direct labor hours, respectively. Detailed comparisons with data from the Mine Safety and Health Administration (MSHA) and State mining agencies are presented. Chapter 5 examines recoverable reserves. Included are internal comparisons as well as comparisons with other published reserve-related data, namely those of BXG, Inc. Chapter 6 describes how EIA obtains estimates of coal prices and discusses the variability in the prices caused by factors such as mine type, coal rank, and region. 5 figs., 5 tabs.

  19. NETL: Coal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > The EnergyCenterDioxide CaptureSee the Foundry'sMcGuireNETLCareersCoal

  20. Petrography of the Herrin (No. 11) coal in western Kentucky

    SciTech Connect (OSTI)

    Hower, J.C.; Wild, G.D.

    1981-06-01T23:59:59.000Z

    The Herrin (No.11) coal in western Kentucky is in the upper part of the Pennsylvanian (Des Moinesian) Carbondale Formation. Samples were obtained from 13 mines in Kentucky and one mine in Illinois in three equal benches from two to three channels for a total of 93 samples. The rank of the coal (as vitrinite reflectance) is high volatile C bituminous in the Moorman Syncline and high volatile A bituminous in the Webster Syncline. Reflectance does not vary between mines in the Moorman Syncline. The percentage of total vitrinite macerals for each mine is over 85% and the percentage of total vitrinite plus liptinite macerals is over 89% (average over 90%) (both on dry, mineral-free basis). 37 refs.

  1. Overall requirements for an advanced underground coal extraction system

    SciTech Connect (OSTI)

    Goldsmith, M.; Lavin, M.L.

    1980-10-15T23:59:59.000Z

    This report presents overall requirements on underground mining systems suitable for coal seams exploitable in the year 2000, with particular relevance to the resources of Central Appalachia. These requirements may be summarized as follows: (1) Production Cost: demonstrate a return on incremental investment of 1.5 to 2.5 times the value required by a low-risk capital project. (2) Miner Safety: achieve at least a 50% reduction in deaths and disabling injuries per million man-hours. (3) Miner Health: meet the intent of all applicable regulations, with particular attention to coal dust, carcinogens, and mutagens; and with continued emphasis on acceptable levels of noise and vibration, lighting, humidity and temperature, and adequate work space. (4) Environmental Impact: maintain the value of mined and adjacent lands at the pre-mining value following reclamation; mitigation of off-site impacts should not cost more than the procedures used in contemporary mining. (5) Coal Conservation: the recovery of coal from the seam being mined should be at least as good as the best available contemporary technology operating in comparable conditions. No significant trade-offs between production cost and other performance indices were found.

  2. Earth Planets Space, , , Flares and the Chromosphere

    E-Print Network [OSTI]

    Hudson, Hugh

    The radiative energy of a solar flare appears mainly in the optical and UV continuum, which form in the lowerSSL, UC Berkeley, CA USA 94720-7450 2University of Glasgow, UK (Received xxxx xx, 2003; Revised xxxx produces in the photospheric magnetic field. Key words: Solar flares, Solar chromosphere, Solar corona

  3. OVERVIEW OF SOLAR FLARES The Yohkoh Perspective

    E-Print Network [OSTI]

    Hudson, Hugh

    that solar flares begin with high-energy processes. The key elements are accelerated particlesChapter 8 OVERVIEW OF SOLAR FLARES The Yohkoh Perspective Hugh Hudson Space Sciences Laboratory, UC of Glasgow, Glasgow G12 8QQ, Scotland, U.K. lyndsay@astro.gla.ac.uk Josef I. Khan Dept. of Physics

  4. OVERVIEW OF SOLAR FLARES The Yohkoh Perspective

    E-Print Network [OSTI]

    California at Berkeley, University of

    observations from space from the 1960s, revealed that solar flares begin with high-energy processes. The keyChapter 8 OVERVIEW OF SOLAR FLARES The Yohkoh Perspective Hugh Hudson Space Sciences Laboratory, UC of Glasgow, Glasgow G12 8QQ, Scotland, U.K. lyndsay@astro.gla.ac.uk Josef I. Khan Dept. of Physics

  5. The use of FBC wastes in the reclamation of coal slurry solids. Technical report, December 1, 1991--February 29, 1992

    SciTech Connect (OSTI)

    Dreher, G.B.; Roy, W.R.; Steele, J.D.

    1992-08-01T23:59:59.000Z

    The present research project is designed to provide initial data on one possible use of FBC waste. FBC wastes from five different locations in Illinois are mixed with coal slurry solids (CSS) from two different coal preparation plants at Illinois coal mines. In mixtures of FBC waste and coal slurry solids, the alkaline components of the FBC waste are expected to react with acid produced by the oxidation of pyrite in the coal slurry solid. An objective of this research is to determine the chemical composition of aqueous leachates from mixtures of FBC wastes, generated under various operating conditions, and the coal slurry solids.

  6. ENCOAL mild coal gasification project. Annual report

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    This document is the combination of the fourth quarter report (July--September 1993) and the 1993 annual report for the ENCOAL project. The following pages include the background and process description for the project, brief summaries of the accomplishments for the first three quarters, and a detailed fourth quarter report. Its purpose is to convey the accomplishments and current progress of the project. ENCOAL Corporation, has completed the construction of a mild gasification demonstration plant at Triton Coal Company`s Buckskin Mine near Gillette, Wyoming. The process, using Liquids From Coal (LFC) technology developed by SMC and SGI International, utilizes low-sulfur Powder River Basin coal to produce two new fuels, Process Derived Fuel (PDF) and Coal Derived Liquids (CDL). ENCOAL submitted an application to the US Department of Energy (DOE) in August 1989, soliciting joint funding of the project in the third round of the Clean Coal Technology Program. The project was selected by DOE in December, 1989 and the Cooperative Agreement approved in September, 1990. Construction, commissioning, and start-up of the ENCOAL mild coal gasification facility was completed in June of 1992, and the project is currently in the operations phase. Some plant modifications have been required and are discussed in this report.

  7. Primary coal crushers grow to meet demand

    SciTech Connect (OSTI)

    Fiscor, S.

    2009-09-15T23:59:59.000Z

    Mine operators look for more throughput with less fines generation in primary crushers (defined here as single role crushers and two stage crushers). The article gives advice on crusher selection and application. Some factors dictating selection include the desired product size, capacity, Hard Grove grindability index, percentage of rock to be freed and hardness of that rock. The hardness of coal probably has greatest impact on product fineness. 2 refs., 1 fig., 1 tab.

  8. The market for large rigid haul trucks in surface mining

    SciTech Connect (OSTI)

    Gilewicz, P.

    2002-04-15T23:59:59.000Z

    Originally published in 2001 this updated report provides a definition of the market for large rigid haulers in surface mining. The analysis covers changes to the mining market segments buying these machines including the gains made by coal producers, retrenchment in copper mining, the consolidation taking place among gold mining companies, and the expansion of iron ore producers in Australia and Brazil. It includes a detailed accounting of 2001 truck shipments, and an analysis of trends in the Ultra-truck segment. It concludes with a revised forecast for shipments through 2006. 12 charts, 56 tabs., 2 apps.

  9. Thirteenth biennial lignite symposium: technology and utilization of low-rank coals proceedings. Volume 2

    SciTech Connect (OSTI)

    Jones, M.L. (ed.)

    1986-02-01T23:59:59.000Z

    These proceedings are the collected manuscripts from the 1985 Lignite Symposium held at Bismarck, North Dakota on May 21-23, 1985. Sponsorship of the thirteenth biennial meeting was by the United States Department of Energy, the University of North Dakota Energy Research Center, and the Texas University Coal Research Consortium. Seven technical sessions plus two luncheons and a banquet were held during the two and a half day meeting. The final half day included tours of the Great Plains Gasification Plant; Basin Electric's Antelope Valley Power Station; and the Freedom Mine. Sessions covered diverse topics related to the technology and use of low-rank coals including coal development and public policy, combustion, gasification, environmental systems for low-rank coal utilization, liquefaction, beneficiation and coal mining and coal inorganics. All the papers have been entered individually into EDB and ERA.

  10. Thirteenth biennial lignite symposium: technology and utilization of low-rank coals proceedings. Volume 1

    SciTech Connect (OSTI)

    Jones, M.L. (ed.)

    1986-02-01T23:59:59.000Z

    These proceedings are the collected manuscripts from the 1985 Lignite Symposium held at Bismarck, North Dakota on May 21-23. Sponsorship of the thirteenth biennial meeting was by the United States Department of Energy, the University of North Dakota Energy Research Center, and the Texas University Coal Research Consortium. Seven technical sessions were held during the two and a half day meeting. The final half day included tours of the Great Plains Gasification Plant; Basin Electric's Antelope Valley Power Station; and the Freedom Mine. Sessions covered diverse topics related to the technology and use of low-rank coals including coal development and public policy, combustion, gasification, environmental systems for low-rank coal utilization, liquefaction, beneficiation and coal mining and coal inorganics. Twenty-four papers have been entered individually into EDB and ERA.

  11. Quarrying and Mining (Stone)

    E-Print Network [OSTI]

    Bloxam, Elizabeth

    2010-01-01T23:59:59.000Z

    the author.   Quarrying and Mining (Stone), Bloxam, UEE 2010archaeology and anthropology of mining. In Social approachesand anthropology of mining, ed. Bernard Knapp, Vincent

  12. Emissions tradeoffs associated with cofiring forest biomass with coal: A case study in Colorado, USA

    E-Print Network [OSTI]

    Fried, Jeremy S.

    , especially in North America and Europe, promote the substitution of forest biomass for fossil fuels to helpEmissions tradeoffs associated with cofiring forest biomass with coal: A case study in Colorado mine and power plant. Model emissions tradeoffs of cofiring forest biomass with coal up to 20% by heat

  13. Secondary economic impact of acid deposition control legislation in six coal producing states: Final report

    SciTech Connect (OSTI)

    Scott, M.J.; Guthrie, S.J.

    1988-12-01T23:59:59.000Z

    Among the difficult policy questions on the US environmental agenda is what to do about emissions to the earth's atmosphere of pollutants that may result in ''acid rain''. The Congress has considered several pieces of legislation spelling out potential approaches to the problem and setting goals for emission reduction, mostly emphasizing the control of oxides of sulfur and nitrogen. Significant policy concern is the dollar costs to the nation's economy of achieving the intended effects of the legislation and the potential impacts on economic activity---in particular, losses of both coal mining and secondary service sector employment in states and regions dependent on the mining of high sulfur coal. There are several direct economic effects of regulations such as the acid rain control legislation. One of the more obvious effects was the switching from high sulfur coal to low sulfur coal. This would result in increases in employment and coal business procurements in low sulfur coal mining regions, but also would result in lower employment and lower coal business procurements in high sulfur coal mining areas. The potential negative effects are the immediate policy concern and are the focus of this report. 15 refs., 1 fig., 17 tabs.

  14. MinE 422: Public perception of mining Some material from Dr. Marcello Veiga, UBC

    E-Print Network [OSTI]

    Boisvert, Jeff

    · Lead-zinc mine · April 25, 1998, tailings dam failure · 4-5M m3 of tailings slurries into Rio Agrio.7 billion) · Coal ($5.5 billion) · Iron ore ($5.0 billion) · Gold ($3.9 billion) · Copper ($3.8 billion

  15. Coal systems analysis

    SciTech Connect (OSTI)

    Warwick, P.D. (ed.)

    2005-07-01T23:59:59.000Z

    This collection of papers provides an introduction to the concept of coal systems analysis and contains examples of how coal systems analysis can be used to understand, characterize, and evaluate coal and coal gas resources. Chapter are: Coal systems analysis: A new approach to the understanding of coal formation, coal quality and environmental considerations, and coal as a source rock for hydrocarbons by Peter D. Warwick. Appalachian coal assessment: Defining the coal systems of the Appalachian Basin by Robert C. Milici. Subtle structural influences on coal thickness and distribution: Examples from the Lower Broas-Stockton coal (Middle Pennsylvanian), Eastern Kentucky Coal Field, USA by Stephen F. Greb, Cortland F. Eble, and J.C. Hower. Palynology in coal systems analysis The key to floras, climate, and stratigraphy of coal-forming environments by Douglas J. Nichols. A comparison of late Paleocene and late Eocene lignite depositional systems using palynology, upper Wilcox and upper Jackson Groups, east-central Texas by Jennifer M.K. O'Keefe, Recep H. Sancay, Anne L. Raymond, and Thomas E. Yancey. New insights on the hydrocarbon system of the Fruitland Formation coal beds, northern San Juan Basin, Colorado and New Mexico, USA by W.C. Riese, William L. Pelzmann, and Glen T. Snyder.

  16. A waterjet mining machine for use in room and pillar mining operations

    SciTech Connect (OSTI)

    Summers, D.A.

    1990-06-01T23:59:59.000Z

    A new mining machine is constructed for use in room and pillar mining operations. This machine uses the action of computer controlled, centrally located high pressure cutting lances to cut deep slots in a coal face. These slots stress relieve the coal ahead of the machine and outline blocks of coal. The movement forward of the machine then wedges up the lower block of coal. This wedging action is assisted by the gathering arms of the loader section of the machine, and by underlying oscillating waterjets which create a slot ahead of the loading wedge as it advances. Finally the top section of coal is brought down by the sequential advance of wedge faced roof support members, again assisted by the waterjet action from the central cutting arms. The machine is designed to overcome major disadvantages of existing room and pillar mining machines in regard to a reduction in respirable dust, the creation of an immediate roof support, and an increase in product size, with concomitant reduction in cleaning costs.

  17. A waterjet mining machine for use in room and pillar mining operations. [Final report

    SciTech Connect (OSTI)

    Summers, D.A.

    1990-06-01T23:59:59.000Z

    A new mining machine is constructed for use in room and pillar mining operations. This machine uses the action of computer controlled, centrally located high pressure cutting lances to cut deep slots in a coal face. These slots stress relieve the coal ahead of the machine and outline blocks of coal. The movement forward of the machine then wedges up the lower block of coal. This wedging action is assisted by the gathering arms of the loader section of the machine, and by underlying oscillating waterjets which create a slot ahead of the loading wedge as it advances. Finally the top section of coal is brought down by the sequential advance of wedge faced roof support members, again assisted by the waterjet action from the central cutting arms. The machine is designed to overcome major disadvantages of existing room and pillar mining machines in regard to a reduction in respirable dust, the creation of an immediate roof support, and an increase in product size, with concomitant reduction in cleaning costs.

  18. Mining engineering College of Engineering and Mines

    E-Print Network [OSTI]

    Hartman, Chris

    Mining engineering College of Engineering and Mines Department of Mining and Geological Engineering As the nation's northernmost accredited mining engineering program, our mission is to advance and disseminate. The mining engineering program emphasizes engineering as it ap- plies to the exploration and development

  19. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of MinesCoalCoal Coal

  20. Coal quality control in the context of international standards ISO 9000-2000

    SciTech Connect (OSTI)

    Freidina, E.V.; Botvinnik, A.A.; Dvornikova, A.N. [Russian Academy of Sciences, Novosibirsk (Russian Federation). Institute of Mining

    2008-11-15T23:59:59.000Z

    The paper sets forth scientific foundations and organizational-technical environment offered by ISO 9000 standards that are oriented to product quality management and, thus, product quality planning. The authors describe the results of coal product quality planning with using the QFD methodology, present a model of coal quality control through the coal product life cycle and mining technologies. It is proposed to evaluate the quality management efficiency by the coefficient of concordance between the product quality and consumer's demands.

  1. The environment of deposition of the Dalton Coal (Upper Pennsylvanian), Palo Pinto Co., TX.

    E-Print Network [OSTI]

    Lowenstein, Glenn Robert

    1986-01-01T23:59:59.000Z

    Alkane analysis for coal, overburden and underburden shales, and oil. 56 CHAPTER I INTRODUCTION Previous workers have classified coals by deter- mining whether they are al 1ochthnous (transported) or autochthonous (in situ) accumul ations (Oe...THE ENVIRONMENT OF DEPOSITION OF THE DALTON COAL (UPPER PENNSYI. VANIAN), PALO PINTO CO. , TX. A Thesis by GLENN ROBERT LOWENSTEIN Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for tne...

  2. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    is produced via coal gasification, then, depending on thenot be amenable to coal gasification and, thus, Eastern coalto represent a coal-to- hydrogen gasification process that

  3. Fire Clay coal and sandstone washouts

    SciTech Connect (OSTI)

    Andrews, W.M. Jr.; Hower, J.C. (Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research)

    1992-01-01T23:59:59.000Z

    The Fire Clay coal bed has been studied in a portion of southeastern Kentucky. This seam is easily recognizable by a distinctive flint clay parting. Mine maps, field descriptions, and laboratory investigations were used to investigate this coal bed. Several elongate sandstone bodies cut the seam in the study area. These sandstone bodies are subparallel roughly east-west, and are typically 10[sup 1] to 10[sup 2] m wide, and 10[sup 2] m to tens of kilometers long. These sandstone washouts occur in areas overlain by a larger channel sandstone, which usually is found associated with the thickest areas of the coal seam. In south-central Perry County, a cross section of one washout area was well exposed. North of the washout, a 4 to 7 cm thick cannel coal was present at the base of the sequence. The coal on the north side of the cutout gradually thins from 2 m to 1.5 m away from the washout. On the south side of the washout, the coal thins abruptly from over 1.5 m to 1.25 m within 30 m of the channel. An island of slumped and slickensided coal is present within the washout region. Postdepositional differential compaction of the peat is inferred to be the control on placement of the channel system. The areas of thickest peat compacted the most, creating topographic lows through which the stream moved. The regions of thick coal were probably the result of several controlling factors. Predepositional differential compaction and erosion may have produced relief which influenced peat development. Lithologic and geochemical continuity across the channel is good, supporting postdepositional emplacement of the sandstone bodies.

  4. COAL DESULFURIZATION PRIOR TO COMBUSTION

    E-Print Network [OSTI]

    Wrathall, J.

    2013-01-01T23:59:59.000Z

    90e COAL DESULFURIZATION PRIOR TO COMBUSTION J. Wrathall, T.of coal during combustion. The process involves the additionCOAL DESULFURIZATION PRIOR TO COMBUSTION Lawrence Berkeley

  5. coal | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Commercial Technologies for Coal Storage and Feed Preparation AlternativesSupplements to Coal - Feedstock Flexibility DOE Supported R&D for CoalBiomass Feed and Gasification...

  6. Quality characterization of western Cretaceous coal from the Colorado Plateau as part of the U.S. Geological Survey's National Coal Resource Assessment Program

    SciTech Connect (OSTI)

    Affolter, R.H.; Brownfield, M.E.

    1999-07-01T23:59:59.000Z

    The goal of the Colorado Plateau Coal Assessment program is to provide an overview of the geologic setting, distribution, resources, and quality of Cretaceous coal in the Colorado Plateau. This assessment, which is part of the US Geological Survey's National Coal Resource Assessment Program, is different from previous coal assessments in that the major emphasis is placed on coals that are most likely to provide energy over the next few decades. The data is also being collected and stored in digital format that can be updated as new information becomes available. Environmental factors may eventually control how coal will be mined, and determine to what extent measures will be implemented to reduce trace element emissions. In the future, increased emphasis will also be placed on coal combustion products and the challenges of waste product disposal or utilization. Therefore, coal quality characterization is an important aspect of the coal assessment program in that it provides important data that will influence future utilization of this resource. The Colorado Plateau study is being completed in cooperation with the US Bureau of Land Management, US Forest Service, Arizona Geological Survey, Colorado Geological Survey, New Mexico Bureau of Mines and Mineral Resources, and the Utah Geological Survey. Restrictions on coal thickness and overburden will be applied to the resource calculations and the resources will be categorized by land ownership. In some areas these studies will also delineate areas where coal mining may be restricted because of land use, industrial, social, or environmental factors. Emphasis is being placed on areas where the coal is controlled by the Federal Government.

  7. Economic assessment of coal-burning locomotives: Topical report

    SciTech Connect (OSTI)

    Not Available

    1986-02-01T23:59:59.000Z

    The General Electric Company embarked upon a study to evaluate various alternatives for the design and manufacture a coal fired locomotive considering various prime movers, but retaining the electric drive transmission. The initial study was supported by the Burlington-Northern and Norfolk-Southern railroads, and included the following alternatives: coal fired diesel locomotive; direct fired gas turbine locomotives; direct fired gas turbine locomotive with steam injection; raw coal gasifier gas turbine locomotive; and raw coal fluid bed steam turbine locomotive. All alternatives use the electric drive transmission and were selected for final evaluation. The first three would use a coal water slurry as a fuel, which must be produced by new processing plants. Therefore, use of a slurry would require a significant plant capital investment. The last two would use classified run-of-the-mine (ROM) coal with much less capital expenditure. Coal fueling stations would be required but are significantly lower in capital cost than a coal slurry plant. For any coal fired locomotive to be commercially viable, it must pass the following criteria: be technically feasible and environmentally acceptable; meet railroads' financial expectations; and offer an attractive return to the locomotive manufacturer. These three criteria are reviewed in the report.

  8. CO2 Sequestration in Unmineable Coal Seams: Potential Environmental Impacts

    SciTech Connect (OSTI)

    Hedges, S.W.; Soong, Yee; McCarthy Jones, J.R.; Harrison, D.K.; Irdi, G.A.; Frommell, E.A.; Dilmore, R.M.; Pique, P.J.; Brown, T.D

    2005-09-01T23:59:59.000Z

    An initial investigation into the potential environmental impacts of CO2 sequestration in unmineable coal seams has been conducted, focusing on changes in the produced water during enhanced coalbed methane (ECBM) production using a CO2 injection process (CO2-ECBM). Two coals have been used in this study, the medium volatile bituminous Upper Freeport coal (APCS 1) of the Argonne Premium Coal Samples series, and an as-mined Pittsburgh #8 coal, which is a high volatile bituminous coal. Coal samples were reacted with either synthetic produced water or field collected produced water and gaseous carbon dioxide at 40 ?C and 50 bar to evaluate the potential for mobilizing toxic metals during CO2-ECBM/sequestration. Microscopic and x-ray diffraction analysis of the post-reaction coal samples clearly show evidence of chemical reaction, and chemical analysis of the produced water shows substantial changes in composition. These results suggest that changes to the produced water chemistry and the potential for mobilizing toxic trace elements from coalbeds are important factors to be considered when evaluating deep, unmineable coal seams for CO2 sequestration.

  9. Healy Clean Coal Project: A DOE Assessment

    SciTech Connect (OSTI)

    National Energy Technology Laboratory

    2003-09-01T23:59:59.000Z

    The goal of the U.S. Department of Energy's (DOE) Clean Coal Technology (CCT) Program is to provide the energy marketplace with advanced, more efficient, and environmentally responsible coal utilization options by conducting demonstrations of new technologies. These demonstration projects are intended to establish the commercial feasibility of promising advanced coal technologies that have been developed to a level at which they are ready for demonstration testing under commercial conditions. This document serves as a DOE post-project assessment (PPA) of the Healy Clean Coal Project (HCCP), selected under Round III of the CCT Program, and described in a Report to Congress (U.S. Department of Energy, 1991). The desire to demonstrate an innovative power plant that integrates an advanced slagging combustor, a heat recovery system, and both high- and low-temperature emissions control processes prompted the Alaska Industrial Development and Export Authority (AIDEA) to submit a proposal for this project. In April 1991, AIDEA entered into a cooperative agreement with DOE to conduct this project. Other team members included Golden Valley Electric Association (GVEA), host and operator; Usibelli Coal Mine, Inc., coal supplier; TRW, Inc., Space & Technology Division, combustor technology provider; Stone & Webster Engineering Corp. (S&W), engineer; Babcock & Wilcox Company (which acquired the assets of Joy Environmental Technologies, Inc.), supplier of the spray dryer absorber technology; and Steigers Corporation, provider of environmental and permitting support. Foster Wheeler Energy Corporation supplied the boiler. GVEA provided oversight of the design and provided operators during demonstration testing. The project was sited adjacent to GVEA's Healy Unit No. 1 in Healy, Alaska. The objective of this CCT project was to demonstrate the ability of the TRW Clean Coal Combustion System to operate on a blend of run-of-mine (ROM) coal and waste coal, while meeting strict environmental requirements. DOE provided $117,327,000 of the total project cost of $282,300,000, or 41.6 percent. Construction for the demonstration project was started in May 1995, and completed in November 1997. Operations were initiated in January 1998, and completed in December 1999. The evaluation contained herein is based primarily on information from the AIDEA's Final Report (Alaska Industrial Development and Export Authority, 2001), as well as other references cited.

  10. Muffle furnace evaluation of FGD sludge-coal-clay mixtures as potential synthetic aggregates

    E-Print Network [OSTI]

    Pettit, Jesse William

    1978-01-01T23:59:59.000Z

    or returned to the adjacent surface coal mines for disposal. Alternatives to these two methods of disposal are being studied (3, 6, 11). The feasibility of using this material as a raw material in the manufacture of synthetic aggregates has recently been... suitability of synthetic aggregates made from lignite fly ash using a rotary kiln. Lignite or subbituminous coals such as those used are typical of the high-lime or "western" coals that are mined in the western half of the United States. Because of the high...

  11. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    Coal Cleaning Costs Process Clean Coal Produced, * T/D (DryMM$ Net Operating Cost, $/T (Clean Coal Basis) Net OperatingCost, $/T (Clean Coal Bases) Case NA Hazen KVB Battelle

  12. Viability of underground coal gasification in the 'deep coals' of the Powder River Basin, Wyoming

    SciTech Connect (OSTI)

    NONE

    2007-06-15T23:59:59.000Z

    The objective of this work is to evaluate the PRB coal geology, hydrology, infrastructure, environmental and permitting requirements and to analyze the possible UCG projects which could be developed in the PRB. Project economics on the possible UCG configurations are presented to evaluate the viability of UCG. There are an estimated 510 billion tons of sub-bituminous coal in the Powder River Basin (PRB) of Wyoming. These coals are found in extremely thick seams that are up to 200 feet thick. The total deep coal resource in the PRB has a contained energy content in excess of twenty times the total world energy consumption in 2002. However, only approximately five percent of the coal resource is at depths less than 500 feet and of adequate thickness to be extracted by open pit mining. The balance is at depths between 500 and 2,000 feet below the surface. These are the PRB 'deep coals' evaluated for UCG in this report. The coal deposits in the Powder River Basin of Wyoming are thick, laterally continuous, and nearly flat lying. These deposits are ideal for development by Underground Coal Gasification. The thick deep coal seams of the PRB can be harvested using UCG and be protective of groundwater, air resources, and with minimum subsidence. Protection of these environmental values requires correct site selection, site characterization, impact definition, and impact mitigation. The operating 'lessons learned' of previous UCG operations, especially the 'Clean Cavity' concepts developed at Rocky Mountain 1, should be incorporated into the future UCG operations. UCG can be conducted in the PRB with acceptable environmental consequences. The report gives the recommended development components for UCG commercialization. 97 refs., 31 figs., 57 tabs., 1 app.

  13. Abundances of sulfur, chlorine, and trace elements in Illinois Basin coals, USA

    SciTech Connect (OSTI)

    Chou, C.L. [Illinois State Geological Survey, Champaign, IL (United States)

    1997-12-31T23:59:59.000Z

    Abundances of sulfur, chlorine and 52 trace elements in 220 channel and drill-core samples of high volatile bituminous coals (Pennsylvanian age) from the Illinois Basin, USA, are evaluated for the purpose of better understanding geologic processes affecting trace element variation in the coal seams. Mean elemental abundances in Illinois Basin coals are listed in a table. Most Illinois Basin coals are high-sulfur (> 3% total sulfur). Peat was influenced by seawater during early diagenesis. However, low-medium sulfur coal (<3% total sulfur) occurs in restricted areas along the Walshville Channel, which is a contemporaneous river in the peat swamp. A comparison of trace element abundances between high-sulfur and low-medium sulfur coals showed that only seven elements (boron, sulfur, iron, molybdenum, mercury, thallium, and uranium) are clearly more abundant in high-sulfur coal than in low-medium sulfur coal. Apparently, boron, sulfur, molybdenum, and uranium in high-sulfur coals were derived from seawater that inundated the peat swamp and terminated peat accumulation. Iron, mercury, and thallium had a terrestrial source and were incorporated in pyrite during diagenesis. Their enrichment in high-sulfur coal is related to pyrite formation in a reducing environment. The chlorine content in Illinois Basin coals, including channel and drill core samples, varies from 0.01% to 0.8% (on a dry basis). Coal samples from surface mines (< 50 meter depth) are usually low in chlorine content (<0.1%). Samples from underground mines (> 50 meter depth) have a chlorine content ranging between 0.1% to 0.5%. Variation of chlorine content in each of the two coal seams shows that chlorine content increases with depth because the chloride in coal is in equilibrium with the chloride in the groundwater, which is also depth dependent. A low chlorine content in shallow regions of a coal seam is a result of leaching by fresh groundwater.

  14. CFBC evaluation of fuels processed from Illinois coals. Technical report, March 1, 1992--May 31, 1992

    SciTech Connect (OSTI)

    Rajan, S. [Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mechanical Engineering and Energy Processes

    1992-10-01T23:59:59.000Z

    The combustion and emissions properties of (a) flotation slurry fuel beneficiated from coal fines at various stages of the cleaning process and (b) coal-sorbent pellets made from the flotation concentrate of the same beneficiation process using corn starch as binder is being investigated in a 4-inch internal diameter circulating fluidized bed combustor (CFBC). Combustion data such as SO{sub 2}, NO{sub x} emissions, combustion efficiency and ash mineral matter analyses from these fuels are compared with similar parameters from a reference coal burnt in the same fluidized bed combustor. In the last quarter, the CFBC was brought on line and tests were performed on standard coal No. 3 from the Illinois Basin Coal Sample Program (IBCSP). During this quarter, it was decided, that a more meaningful comparison could be obtained if, instead of using the IBCSP No. 3 coal as a standard, the run-of-mine Illinois No. 5 coal from the Kerr-McGee Galatia plant could be used as the reference coal for purposes of comparing the combustion and emissions performance, since the slurry and pellet fuels mentioned in (a) and (b) above were processed from fines recovered form this same Illinois No. 5 seam coal. Accordingly, run-of-the mine Illinois No. 5 coal from the Galatia plant were obtained, riffled and sieved to {minus}14+18 size for the combustion tests. Preliminary combustion tests have been made in the CFBC with this new coal. In preparation for the slurry tests, the moisture content of the beneficiated slurry samples was determined. Proximate and ultimate analyses of all the coal samples were performed. Using a Leeds and Northrup Model 7995-10 Microtrek particle size analyzer, the size distributions of the coal in the three slurry samples were determined. The mineral matter content of the coal in the three slurry samples and the Illinois No. 5 seam coal were investigated using energy dispersive x-ray analysis.

  15. Method and apparatus for monitoring the thickness of a coal rib during rib formation

    DOE Patents [OSTI]

    Mowrey, Gary L. (Jefferson Boro, PA); Ganoe, Carl W. (Pittsburgh, PA); Monaghan, William D. (Dravosburg, PA)

    1996-01-01T23:59:59.000Z

    Apparatus for monitoring the position of a mining machine cutting a new entry in a coal seam relative to an adjacent, previously cut entry to determine the distance between a near face of the adjacent previously cut entry and a new face adjacent thereto of a new entry being cut by the mining machine which together define the thickness of a coal rib being formed between the new entry and the adjacent previously cut entry during the new entry-cutting operation. The monitoring apparatus; includes a transmit antenna mounted on the mining machine and spaced inwardly from the new face of the coal rib for transmitting radio energy towards the coal rib so that one portion of the radio energy is reflected by the new face which is defined at an air-coal interface between the new entry and the coal rib and another portion of the radio energy is reflected by the near face of the coal rib which is defined at an air-coal interface between the coal rib and the adjacent previously cut entry. A receive antenna mounted on the mining machine and spaced inwardly of the new face of the coal rib receives the one portion of the radio energy reflected by the new face and also receives the another portion of the radio energy reflected by the near face. A processor determines a first elapsed time period equal to the time required for the one portion of the radio energy reflected by the new face to travel between the transmit antenna and the receive antenna and also determines a second elapsed time period equal to the time required for the another portion of the radio energy reflected by the near face to travel between the transmit antenna and the receive antenna and thereafter calculates the thickness of the coal rib being formed as a function of the difference between the first and second elapsed time periods.

  16. Injury experience in stone mining, 1991. Information report

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of stone mining in the united States for 1991. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and principal type of mineral. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison with other metal and nonmetallic mineral mining industries and with coal mining, summary reference tabulations are included at the end of both the operator and the contractor sections of this report.

  17. Achieve smokeless flaring -- Air or steam assist?

    SciTech Connect (OSTI)

    Chaudhuri, M.; Diefenderfer, J.J.

    1995-06-01T23:59:59.000Z

    Because of the technological advances made during the past several years, flare system design has become more important with respect to the economics of plant operation. There are many options available to the engineer during the initial design phase of a flare system for a chemical process industries (CPI) plant. An earlier CEP article covered the basics of flare design and how to choose and size the right equipment, such as stack height and diameter, tip design, pilots and pilots flame detectors, seals, and so on. One of the most important factors is how to achieve smokeless operation, which is accomplished by either steam-assisted or air-assisted elevated flare stack assemblies. This article compares the two approaches and outlines the advantages and disadvantages of each with respect to economics, practicality, and operability. Table 1 summarizes the data for a typical plant in the U.S. Gulf Coast area that will be used as the basis for comparing costs.

  18. Reducing Safety Flaring through Advanced Control 

    E-Print Network [OSTI]

    Hokanson, D.; Lehman, K.; Matsumoto, S.; Takai, N.; Takase, F.

    2010-01-01T23:59:59.000Z

    An advanced process control application, using DMCplus® (Aspen Technology, Inc.), was developed to substantially reduce fuel gas losses to the flare at a large integrated refining / petrochemical complex. Fluctuations in internal fuel gas system...

  19. Reduction of Hydrocarbon Losses to Flare Systems

    E-Print Network [OSTI]

    Page, J.

    1979-01-01T23:59:59.000Z

    merit consideration because the losses and associated economic penalties are assumed to be small. Flare gas flow is not easily measured and as a result, most plants are unaware of how much product they are actually losing during normal operation...

  20. Reducing Safety Flaring through Advanced Control

    E-Print Network [OSTI]

    Hokanson, D.; Lehman, K.; Matsumoto, S.; Takai, N.; Takase, F.

    2010-01-01T23:59:59.000Z

    An advanced process control application, using DMCplus® (Aspen Technology, Inc.), was developed to substantially reduce fuel gas losses to the flare at a large integrated refining / petrochemical complex. Fluctuations in internal fuel gas system...

  1. Sauget Plant Flare Gas Reduction Project

    E-Print Network [OSTI]

    Ratkowski, D. P.

    2007-01-01T23:59:59.000Z

    Empirical analysis of stack gas heating value allowed the Afton Chemical Corporation Sauget Plant to reduce natural gas flow to its process flares by about 50% while maintaining the EPA-required minimum heating value of the gas streams....

  2. Upgraded Coal Interest Group

    SciTech Connect (OSTI)

    Evan Hughes

    2009-01-08T23:59:59.000Z

    The Upgraded Coal Interest Group (UCIG) is an EPRI 'users group' that focuses on clean, low-cost options for coal-based power generation. The UCIG covers topics that involve (1) pre-combustion processes, (2) co-firing systems and fuels, and (3) reburn using coal-derived or biomass-derived fuels. The UCIG mission is to preserve and expand the economic use of coal for energy. By reducing the fuel costs and environmental impacts of coal-fired power generation, existing units become more cost effective and thus new units utilizing advanced combustion technologies are more likely to be coal-fired.

  3. Emission control options for mine diesels

    SciTech Connect (OSTI)

    Waytulonis, R.W. (Bureau of Mines, Twin Cities, MN (USA). Twin Cities Research Center)

    1991-03-01T23:59:59.000Z

    New exhaust control techniques and devices may be necessary to meet future diesel particulate matter emission standards in underground coal mines. This paper reviews conventional work practices and devices used to control diesel exhaust emissions, and new techniques being tested by the US Bureau of Mines. Discussions center on important work practices and on the function and efficiency of exhaust aftertreatment devices. An industry-government cooperative research project to develop and test an exhaust aftertreatment system for part 36 equipment is also discussed.

  4. Coal Severance Tax (North Dakota)

    Broader source: Energy.gov [DOE]

    The Coal Severance Tax is imposed on all coal severed for sale or industrial purposes, except coal used for heating buildings in the state, coal used by the state or any political subdivision of...

  5. Mitigation planning for raptors during mining

    SciTech Connect (OSTI)

    Platt, S.W. [Wyoming Dept. of Environmental Quality/Land Quality Division, Lander, WY (United States); Hargis, N.E. [Bridger Coal Co., Rock Springs, WY (United States)

    1990-12-31T23:59:59.000Z

    Birds of prey and their eggs, young and nests are protected by state and federal laws and regulations. Surface mining operators may experience conflicts with raptors when expanding into nesting areas or when raptors are attracted into mining areas. State and federal permits are required for disturbance or manipulation of birds of prey. Mitigation planning for raptors begins before mining and continues through mining. As conflict situations changes, so must the mitigation plan. Before each nesting season the mining schedule should be compared to areas of known raptor nesting activity. If overlap occurs, nest protection measures may be needed. Areas of potential conflict should be patrolled regularly to identify the presence of a raptor pair and nest starts. Should a raptor nest be built and eggs laid, a change in the mining schedule or an egg or brood manipulation may resolve the conflict. Bridger Coal Company has successfully mitigated conflicts with 3 raptor species. A ferruginous hawk (Buteo regalis) nest with brood was successfully relocated across a pit. Red-tailed hawk (B. jamaicensis) egg clutches were removed from 2 highwall nests and transported in a portable incubator to a commercial raptor propagator where they were hatched, fed and conspecifically imprinted until achieving self-thermoregulation. All chicks were returned to the mine and successfully placed into foster nests. A metal artificial nest ledge for a prairie falcon (Falco mexicanus) was constructed in a cliff and a traditional nesting ledge rendered inaccessible. The falcon pair successfully nested in the artificial ledge.

  6. Computer-Aided Visual Assessment in Mine Planning and Design1

    E-Print Network [OSTI]

    Standiford, Richard B.

    Colorado and in Four Corners, New Mexico. We are actively seeking opportunities to develop additional operations around the world. Our mineral products include copper, iron ore, uranium, and coal. Uranium is pro- duced through a wholly--owned subsidiary. Our producing domestic coal mines are located in northwestern

  7. Survey of government assistance for the world's hard-coal industries

    SciTech Connect (OSTI)

    Neme, L.A.; Yancik, J.J.

    1989-05-01T23:59:59.000Z

    This report investigates the existence and use of subsidies and incentives that foreign nations give their coal industries. Of particular interest are those aids that promote and facilitate the export of coal. A survey of hard coal producing countries was conducted to compile, and quantify if possible, direct and indirect financial aids given by governments for the purposes of maintaining, expanding or creating an indigenous coal industry and facilitating exports. The survey found that government measures commonly used to maintain, expand or create coal production include deficit operating grants, capital grants, preferential loan credits, labor and tax benefits, and export marketing assistance. Typical measures used to guarantee and protect domestic coal markets are long-term supply agreements, price supports, government purchases, tariffs, import licenses, and quotas. Common types of financial assistance provided by governments that do not benefit current coal production or use are research and development funds, environmental grants for restoring past mined lands, and payments to unemployed miners.

  8. Utilization ROLE OF COAL COMBUSTION

    E-Print Network [OSTI]

    Wisconsin-Milwaukee, University of

    , materials left after combustion of coal in conventional and/ or advanced clean-coal technology combustors and advanced clean-coal technology combustors. This paper describes various coal combustion products produced (FGD) products from pulverized coal and advanced clean-coal technology combustors. Over 70% of the CCPs

  9. International perspectives on coal preparation

    SciTech Connect (OSTI)

    NONE

    1997-12-31T23:59:59.000Z

    The report consists of the vugraphs from the presentations which covered the following topics: Summaries of the US Department of Energy`s coal preparation research programs; Preparation trends in Russia; South African coal preparation developments; Trends in hard coal preparation in Germany; Application of coal preparation technology to oil sands extraction; Developments in coal preparation in China; and Coal preparation in Australia.

  10. Coalbed methane production enhancement by underground coal gasification

    SciTech Connect (OSTI)

    Hettema, M.H.H.; Wolf, K.H.A.A.; Neumann, B.V.

    1997-12-31T23:59:59.000Z

    The sub-surface of the Netherlands is generally underlain by coal-bearing Carboniferous strata at greater depths (at many places over 1,500 m). These coal seams are generally thinner than 3 meter, occur in groups (5--15) within several hundred meters and are often fairly continuous over many square kilometers. In many cases they have endured complex burial history, influencing their methane saturation. In certain particular geological settings, a high, maximum coalbed methane saturation, may be expected. Carboniferous/Permian coals in the Tianjin-region (China) show many similarities concerning geological settings, rank and composition. Economical coalbed methane production at greater depths is often obstructed by the (very) low permeabilities of the coal seams as with increasing depth the deformation of the coal reduces both its macro-porosity (the cleat system) and microporosity. Experiments in abandoned underground mines, as well as after underground coal gasification tests indicate ways to improve the prospects for coalbed methane production in originally tight coal reservoirs. High permeability areas can be created by the application of underground coal gasification of one of the coal seams of a multi-seam cycle with some 200 meter of coal bearing strata. The gasification of one of the coal seams transforms that seam over a certain area into a highly permeable bed, consisting of coal residues, ash and (thermally altered) roof rubble. Additionally, roof collapse and subsidence will destabilize the overburden. In conjunction this will permit a better coalbed methane production from the remaining surrounding parts of the coal seams. Moreover, the effects of subsidence will influence the stress patterns around the gasified seam and this improves the permeability over certain distances in the coal seams above and below. In this paper the effects of the combined underground coal gasification and coalbed methane production technique are regarded for a single injection well. Known geotechnical aspects are combined with results from laboratory experiments on compaction of thermally treated rubble. An axi-symmetric numerical model is used to determine the effects induced by the gasified coal seam. The calculation includes the rubble formation, rubble compaction and induced stress effects in the overlying strata. Subsequently the stress effects are related to changes in coal permeability, based on experimental results of McKee et al.

  11. Microbial solubilization of coal

    DOE Patents [OSTI]

    Strandberg, Gerald W. (Farragut, TN); Lewis, Susan N. (Knoxville, TN)

    1990-01-01T23:59:59.000Z

    This invention deals with the solubilization of coal using species of Streptomyces. Also disclosed is an extracellular component from a species of Streptomyces, said component being able to solubilize coal.

  12. High-pressure coal fuel processor development

    SciTech Connect (OSTI)

    Greenhalgh, M.L. (Caterpillar, Inc., Peoria, IL (United States))

    1992-12-01T23:59:59.000Z

    Caterpillar shares DOE/METC interest in demonstrating the technology required to displace petroleum-based engine fuels with various forms of low cost coal. Current DOE/METC programs on mild gasification and coal-water-slurries are addressing two approaches to this end. Engine and fuel processor system concept studies by Caterpillar have identified a third, potentially promising, option. This option includes high-pressure fuel processing of run-of-the-mine coal and direct injection of the resulting low-Btu gas stream into an ignition assisted, high compression ratio diesel engine. The compactness and predicted efficiency of the system make it suitable for application to line-haul railroad locomotives. Two overall conclusions resulted from Task 1. First direct injected, ignition assisted Diesel cycle engine combustion systems can be suitably modified to efficiently utilize low-Btu gas fuels. Second, high pressure gasification of selected run-of-the-mine coals in batch-loaded fuel processors is feasible. These two findings, taken together, significantly reduce the perceived technical risk associated with the further development of the proposed coal gas fueled Diesel cycle power plant concept. The significant conclusions from Task 2 were: An engine concept, derived from a Caterpillar 3600 series engine, and a fuel processor concept, based on scaling up a removable-canister configuration from the test rig, appear feasible; and although the results of this concept study are encouraging, further, full-scale component research and development are required before attempting a full-scale integrated system demonstration effort.

  13. Fixed-bed gasification research using US coals. Volume 2. Gasification of Jetson bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-03-31T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) Group. This report describes the gasification testing of Jetson bituminous coal. This Western Kentucky coal was gasified during an initial 8-day and subsequent 5-day period. Material flows and compositions are reported along with material and energy balances. Operational experience is also described. 4 refs., 24 figs., 17 tabs.

  14. Fixed-bed gasification research using US coals. Volume 9. Gasification of Elkhorn bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-05-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) group. This report is the ninth volume in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This specific report describes the gasification of Elkhorn bituminous coal. The period of gasificastion test was September 13 to October 12, 1983. 9 refs., 24 figs., 35 tabs.

  15. Fixed-bed gasification research using US coals. Volume 7. Gasification of Piney Tipple bituminous coal

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-05-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and governmental agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) Group. This report is the seventh volume in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This specific report describes the gasification of Piney Tipple bituminous coal. The period of the gasification test was July 18-24, 1983. 6 refs., 20 figs., 17 tabs.

  16. Illinois coal reserve assessment and database development. Final report

    SciTech Connect (OSTI)

    Treworgy, C.G.; Prussen, E.I.; Justice, M.A.; Chenoweth, C.A. [and others

    1997-11-01T23:59:59.000Z

    The new demonstrated reserve base estimate of coal of Illinois is 105 billion short tons. This estimate is an increase from the 78 billion tons in the Energy Information Administration`s demonstrated reserve base of coal, as of January 1, 1994. The new estimate arises from revised resource calculations based on recent mapping in a number of countries, as well as significant adjustments for depletion due to past mining. The new estimate for identified resources is 199 billion tons, a revision of the previous estimate of 181 billion tons. The new estimates incorporate the available analyses of sulfur, heat content, and rank group appropriate for characterizing the remaining coal resources in Illinois. Coal-quality data were examined in conjunction with coal resource mapping. Analyses of samples from exploration drill holes, channel samples from mines and outcrops, and geologic trends were compiled and mapped to allocate coal resource quantities to ranges of sulfur, heat content, and rank group. The new allocations place almost 1% of the demonstrated reserve base of Illinois in the two lowest sulfur categories, in contrast to none in the previous allocation used by the Energy Information Administration (EIA). The new allocations also place 89% of the demonstrated reserve base in the highest sulfur category, in contrast to the previous allocation of 69% in the highest category.

  17. SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER

    E-Print Network [OSTI]

    Ryan, Joe

    SOURCES AND EFFECTS OF MINING-RELATED AND NATURAL ACID ROCK DRAINAGE QUANTIFIED USING TRACER, and Architectural Engineering 2006 #12;ii This thesis entitled: Sources and Effects of Mining-Related and Natural Acid Rock Drainage Quantified Using Tracer Dilution, Coal Creek Watershed, Gunnison County, Colorado

  18. Coal gasification apparatus

    DOE Patents [OSTI]

    Nagy, Charles K. (Monaca, PA)

    1982-01-01T23:59:59.000Z

    Coal hydrogenation vessel has hydrogen heating passages extending vertically through its wall and opening into its interior.

  19. Autothermal coal gasification

    SciTech Connect (OSTI)

    Konkol. W.; Ruprecht, P.; Cornils, B.; Duerrfeld, R.; Langhoff, J.

    1982-03-01T23:59:59.000Z

    Test data from the Ruhrchemie/Ruhrkohle Texaco coal gasification demonstration plant at Oberhausen are reported. (5 refs.)

  20. Natural Gas Vented and Flared

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803andYear Janthrough2,869,9601. Natural5,1958 20098

  1. Cutting sound enhancement system for mining machines

    DOE Patents [OSTI]

    Leigh, Michael C. (Coal Center, PA); Kwitowski, August J. (Clairton, PA)

    1992-01-01T23:59:59.000Z

    A cutting sound enhancement system (10) for transmitting an audible signal from the cutting head (101) of a piece of mine machinery (100) to an operator at a remote station (200), wherein, the operator using a headphone unit (14) can monitor the difference in sounds being made solely by the cutting head (101) to determine the location of the roof, floor, and walls of a coal seam (50).

  2. Assessment of underground coal gasification in bituminous coals: potential UCG products and markets. Final report, Phase I

    SciTech Connect (OSTI)

    None

    1982-01-31T23:59:59.000Z

    The following conclusions were drawn from the study: (1) The US will continue to require new sources of energy fuels and substitutes for petrochemical feedstocks into the foreseeable future. Most of this requirement will be met using coal. However, the cost of mining, transporting, cleaning, and preparing coal, disposing of ash or slag and scrubbing stack gases continues to rise; particularly, in the Eastern US where the need is greatest. UCG avoids these pitfalls and, as such, should be considered a viable alternative to the mining of deeper coals. (2) Of the two possible product gases LBG and MBG, MBG is the most versatile. (3) The most logical use for UCG product in the Eastern US is to generate power on-site using a combined-cycle or co-generation system. Either low or medium Btu gas (LBG or MBG) can be used. (4) UCG should be an option whenever surface gasification is considered; particularly, in areas where deeper, higher sulfur coal is located. (5) There are environmental and social benefits to use of UCG over surface gasification in the Eastern US. (6) A site could be chosen almost anywhere in the Illinois and Ohio area where amenable UCG coal has been determined due to the existence of existing transportation or transmission systems. (7) The technology needs to be demonstrated and the potential economic viability determined at a site in the East-North-Central US which has commercial quantities of amenable bituminous coal before utilities will show significant interest.

  3. Coal-bench architecture as a means of understanding regional changes in coal thickness and quality

    SciTech Connect (OSTI)

    Greb, S.F.; Eble, C.F. [Kentucy Geological Survey, Lexington, KY (United States); Hower, J.C. [Center for Applied Research, Lexington, KY (United States)

    1996-09-01T23:59:59.000Z

    Analysis of the Fire Creek (Westphalian B), Pond Creek (lower Westphalian B), and Stockton (Westphalian B) coals, three of the most heavily mined coals in the Central Appalachian Basin, shows that all have a similar multiple-bench architecture of at least two benches split by a regional clastic parting or durain. Coal benches beneath regionally extensive partings are generally less continuous, thinner, more palynologically variable, higher in ash yield, and higher in sulfur content than coal benches above regional partings in all three coals. Where thick, benches above regional partings tend to exhibit temporal palynological changes from lycopod- to fern-dominant. Where inertinite-rich/fern-dominant benches are overlain by additional benches, the upper benches are limited in extent, variable in thickness, high in sulfur content and ash yield, and split away from the coal. The multiple-bench architecture exhibited by these coals is interpreted to represent a cyclic mire succession that was common in the Middle Pennsylvanian. Peats began as planar mires infilling an irregular topography during rising base level. When the topography was infilled, unconfined flooding was possible and resulted in widespread partings. Ponding above these clay-rich flood deposits led to re-establishment of new planar mires with greater continuity than the underlying mires. The extent of these mires provided buffers to clastic influx and, in many cases, allowed domed conditions to develop. Doming resulted in thick, high-quality coal benches. In some cases, a third stage of planar peats, with similar characteristics to the planar peats at the base of the beds, developed on the unevenly distributed clastics that buried underlying mires during continued base-level rise.

  4. Petrographic characterization of Kentucky coals. Quarterly progress report, September-November 1981

    SciTech Connect (OSTI)

    Hower, J.C.; Ferm, J.C.; Cobb, J.C.; Trinkle, E.J.; Frankie, K.A.; Poe, S.H.; Baynard, D.N.

    1981-01-01T23:59:59.000Z

    The project Petrographic Characterization of Kentucky Coals consists of research in three specific areas of coal petrology: spectral fluorescence of liptinite macerals, properties of semi-inert macerals, and size/form/microlithotype association of pyrite/marcasite. Additional research on the Mannington (No. 4, also known as Mining City and Lewisport) coal will apply techniques developed in the first three areas. Certain suits of coals from other states will also be studied to expand the variability in the samples. Preliminary results are reported.

  5. Sodium and oxygen in Nigerian coals: Possible effects on ash fouling

    SciTech Connect (OSTI)

    Ewa, I.O.B.; Elegbe, S.B.; Adetunji, J. [Ahmadu Bello Univ., Zaria (Nigeria)

    1996-09-01T23:59:59.000Z

    Ash fouling during heat transfers in coal power-plants has been known to be an engineering problem caused by high sodium levels of the feed-coals. Instrumental Neutron Activation Analysis (INAA) was used in determining the concentration of some alkali elements (Na, Ca, Mg) associated with ash fouling for eight Nigerian coals mined at Onyeama, Ogbete, Enugu, Gombe, Okaba, Afikpo, Lafia and Asaba. Sodium levels were generally low (0.001-0.036%). Oxygen concentrations considered as an indicative measure of the wettability of each of the coals were determined. The possible effects of the concentration of these elements on ash fouling were discussed. 8 refs., 3 tabs.

  6. Iowa State Mining and Mineral Resources Research Institute

    SciTech Connect (OSTI)

    Not Available

    1990-08-01T23:59:59.000Z

    This final report describes the activities of the Iowa State Mining and Mineral Resources Research Institute (ISMMRRI) at Iowa State University for the period July 1, 1989, to June 30, 1990. Activities include research in mining- and mineral-related areas, education and training of scientists and engineers in these fields, administration of the Institute, and cooperative interactions with industry, government agencies, and other research centers. During this period, ISMMRRI has supported research efforts to: (1) Investigate methods of leaching zinc from sphalerite-containing ores. (2) Study the geochemistry and geology of an Archean gold deposit and of a gold-telluride deposit. (3) Enchance how-quality aggregates for use in construction. (4) Pre-clean coal by triboelectric charging in a fluidized-bed. (5) Characterize the crystal/grain alignment during processing of yttrium-barium-copper-perovskite (1-2-3) superconductors. (5) Study the fluid inclusion properties of a fluorite district. (6) Study the impacts of surface mining on community planning. (7) Assess the hydrophobicity of coal and pyrite for beneficiation. (8) Investigate the use of photoacoustic absorption spectroscopy for monitoring unburnt carbon in the exhaust gas from coal-fired boilers. The education and training program continued within the interdepartmental graduate minor in mineral resources includes courses in such areas as mining methods, mineral processing, industrial minerals, extractive metallurgy, coal science and technology, and reclamation of mined land. In addition, ISMMRRI hosted the 3rd International Conference on Processing and Utilization of High-Sulfur Coals in Ames, Iowa. The Institute continues to interact with industry in order to foster increased cooperation between academia and the mining and mineral community.

  7. Data Mining Ryan Benton

    E-Print Network [OSTI]

    Raghavan, Vijay

    Data Mining Ryan Benton Center for Advanced Computer Studies University of Louisiana at Lafayette in Databases (KDD) ! Data Mining Related Fields Research Issues Tasks ! Association Mining Problem;9 KDD vs. DATA MINING ! Synonyms (?) ! KDD More than just finding pattern Mining, dredging

  8. Coal recovery process

    DOE Patents [OSTI]

    Good, Robert J. (Grand Island, NY); Badgujar, Mohan (Williamsville, NY)

    1992-01-01T23:59:59.000Z

    A method for the beneficiation of coal by selective agglomeration and the beneficiated coal product thereof is disclosed wherein coal, comprising impurities, is comminuted to a particle size sufficient to allow impurities contained therein to disperse in water, an aqueous slurry is formed with the comminuted coal particles, treated with a compound, such as a polysaccharide and/or disaccharide, to increase the relative hydrophilicity of hydrophilic components, and thereafter the slurry is treated with sufficient liquid agglomerant to form a coagulum comprising reduced impurity coal.

  9. acute gout flare: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ones (X9) are selected as representative of the flaring Sun. The emission measure distribution vs. temperature, EM(T), of the flaring regions is derived from YohkohSXT...

  10. anterior chamber flare: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ones (X9) are selected as representative of the flaring Sun. The emission measure distribution vs. temperature, EM(T), of the flaring regions is derived from YohkohSXT...

  11. China's Coal: Demand, Constraints, and Externalities

    E-Print Network [OSTI]

    Aden, Nathaniel

    2010-01-01T23:59:59.000Z

    anthracite, lignite and brown coal. While bituminous coal isproduction of lignite and brown coal, which also increasedtonnes. Whereas lignite and brown coal accounted for 4% of

  12. Water spray ventilator system for continuous mining machines

    DOE Patents [OSTI]

    Page, Steven J. (Pittsburgh, PA); Mal, Thomas (Pittsburgh, PA)

    1995-01-01T23:59:59.000Z

    The invention relates to a water spray ventilator system mounted on a continuous mining machine to streamline airflow and provide effective face ventilation of both respirable dust and methane in underground coal mines. This system has two side spray nozzles mounted one on each side of the mining machine and six spray nozzles disposed on a manifold mounted to the underside of the machine boom. The six spray nozzles are angularly and laterally oriented on the manifold so as to provide non-overlapping spray patterns along the length of the cutter drum.

  13. Precision Mining

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARD ACCOUNTING SYSTEM SURVEYPrecision Mining Double

  14. Coal: the new black

    SciTech Connect (OSTI)

    Tullo, A.H.; Tremblay, J.-F.

    2008-03-15T23:59:59.000Z

    Long eclipsed by oil and natural gas as a raw material for high-volume chemicals, coal is making a comeback, with oil priced at more than $100 per barrel. It is relatively cheap feedstock for chemicals such as methanol and China is building plants to convert coal to polyolefins on a large scale and interest is spreading worldwide. Over the years several companies in the US and China have made fertilizers via the gasification of coal. Eastman in Tennessee gasifies coal to make methanol which is then converted to acetic acid, acetic anhydride and acetate fiber. The future vision is to convert methanol to olefins. UOP and Lurgi are the major vendors of this technology. These companies are the respective chemical engineering arms of Honeywell and Air Liquide. The article reports developments in China, USA and India on coal-to-chemicals via coal gasification or coal liquefaction. 2 figs., 2 photo.

  15. EIS-0432: Department of Energy Loan Guarantee for Medicine Bow Gasification and Liquefaction Coal-to-Liquids, Carbon County, Wyoming

    Broader source: Energy.gov [DOE]

    DOE is assessing the potential environmental impacts for its proposed action of issuing a Federal loan guarantee to Medicine Bow Fuel & Power LLC (MBFP), a wholly-owned subsidiary of DKRW Advanced Fuels LLC. MBFP submitted an application to DOE under the Federal loan guarantee program pursuant to the Energy Policy Act of 2005 to support the construction and startup of the MBFP coal-to-liquids facility, a coal mine and associated coal handling facilities. This project is inactive.

  16. Petrology, geochemistry, and palynology of Joggins Formation (Westphalian A) coals, Cumberland basin, Nova Scotia

    SciTech Connect (OSTI)

    Hower, J.C. [Univ. of Kentucky Center for Applied Energy Research, Lexington, KY (United States); Calder, J.H. [Nova Scotia Dept. of Natural Resources, Halifax (Canada); Cortland, F.E. [Kentucky Geological Survey, Lexington, KY (United States)] [and others

    1996-09-01T23:59:59.000Z

    Five Westphalian A coals were collected from the Joggins Formation section exposed along Chignecto Bay at Joggins, Nova Scotia. Several of the coal beds along the bay were mined beginning in the early 17th century. There has been little detailed investigation of the coal beds of this classic section. The lowermost coal, the Upper Coal 29 (Fundy), is a high-vitrinite coal with a spore assemblage dominated by arboreous lycopod spores with tree ferns subdominant. The upper portions of the coal bed have the highest ratio of well-preserved to poorly-preserved telinite of any of the coals investigated. Coal 19 (Forty Brine) has 88% total vitrinite but, unlike the Fundy coal bed, the telinite has a poor preservation ratio and half of the total vitrinite population comprises gelocollinite and vitrodetrinite. The latter coal bed is directly overlain by a basin-wide limestone bed. The Lower Kimberly (Coal 15) shows good preservation of vitrinite with relatively abundant telinite among the total vitrinite. The Upper Kimberly, which underlies the tetrapod-bearing lycopsid trees found by Lyell and Dawson in 1852, exhibits an upward decrease in arboreous lycopod spores and an increase in the tree fern spore Punctatisporites minutus. The megaspore record is similarly dominated by Lagenicularugosa paralycopodites and tree fern spores. Telinite preservation increases upwards in the Upper Kimberly but overall is well below the preservation ratio of the Fundy coal bed. The coals are all high sulfur, up to 13.7% total sulfur for the lower lithotype of the Fundy coal bed. The Kimberly coals are not only high in total and pyritic sulfur, but also have high concentrations of chalcophile elements.

  17. Encoal mild coal gasification project: Encoal project final report, July 1, 1997--July 31, 1997

    SciTech Connect (OSTI)

    NONE

    1997-07-01T23:59:59.000Z

    This document is the summative report on the ENCOAL Mild Coal Gasification Project. It covers the time period from September 17, 1990, the approval date of the Cooperative Agreement between ENCOAL and the US Department of Energy (DOE), to July 17, 1997, the formal end of DOE participation in the Project. The Cooperative Agreement was the result of an application by ENCOAL to the DOE soliciting joint funding under Round III of the Clean Coal Technology Program. By June 1992, the ENCOAL Plant had been built, commissioned and started up, and in October 1994, ENCOAL was granted a two-year extension, carrying the project through to September 17, 1996. No-cost extensions have moved the Cooperative Agreement end date to July 17, 1997 to allow for completion of final reporting requirements. At its inception, ENCOAL was a subsidiary of Shell Mining Company. In November 1992, Shell Mining Company changed ownership, becoming a subsidiary of Zeigler Coal Holding Company (Zeigler) of Fairview Heights, Illinois. Renamed successively as SMC Mining Company and then Bluegrass Coal Development Company, it remained the parent entity for ENCOAL, which has operated a 1,000-ton/day mild coal gasification demonstration plant near Gillette, Wyoming for nearly 5 years. ENCOAL operates at the Buckskin Mine owned by Triton Coal Company (Triton), another Zeigler subsidiary.

  18. Table 23. Coal Mining Productivity by State, Mine Type, and Mine Production Range, 2013

    U.S. Energy Information Administration (EIA) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14Total Delivered Residentialtight oil

  19. ANU MLSS 2010: Data Mining

    E-Print Network [OSTI]

    Christen, Peter

    ANU MLSS 2010: Data Mining Part 1: Introduction, data mining challenges, and data issues for data mining Data Mining module outline Part 1: Very short introduction to data mining Data mining process Challenges in data mining Data cleaning, integration and pre-processing Part 2: Association rule mining Part

  20. Investigation of plasma velocity field solar flare footpoints

    E-Print Network [OSTI]

    Mrozek, Tomasz

    of Wroclaw NCN Grant 2011/01/M/ST9/06096 #12;The Solar Flare - observations #12;chromosphere corona photosphere The Solar Flare - cartoon - conversion of magnetic energy into other forms - transport of energyInvestigation of plasma velocity field in solar flare footpoints from RHESSI observations T. Mrozek

  1. West Virginia University 1 Department of Mining Engineering

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    in the managerial, financial, environmental, and social aspects of the operation of a mining enterprise. Local coal. · Encourage graduates in the use of computer and information technology, in a comprehensive manner for engineering practice. · Students have an understanding of the importance of economics, environmental, health

  2. Reducing roof fall accidents on retreat mining sections

    SciTech Connect (OSTI)

    Mark, C.; Zelanko, J.C. [National Institute for Occupational Safety and Health (NIOSH) (United States). Rock Mechanics Section

    2005-12-15T23:59:59.000Z

    Pillar recovery continues to be one of the most hazardous activities in underground mining. Global stability, achieved through proper pillar design, is a necessary prerequisite for safe pillar recovery. Local stability means preventing roof falls in the working area. It is achieved by minimizing the 'risk factors' described in this paper. Roof Control Plans developed at each underground coal mine often address both engineering parameters and human behavior issues. These plans are essential to all mining activities, but nowhere are they more important than in pillar recovery. Pillaring leaves little tolerance for error, and mistakes can be deadly. Roof Control Plans must be carefully drawn up to address site-specific conditions, and then carefully implemented and followed. Miners and foremen involved in pillar extraction should be trained to know and understand the plan prior to beginning retreat mining. More details can be found at www.cdc.gov/niosh/mining/pubs/pdfs/rtrog.pdf. 3 figs.

  3. Environmental control implications of coal use

    SciTech Connect (OSTI)

    Wilzbach, K.E.; Livengood, C.D.; Farber, P.S.

    1980-01-01T23:59:59.000Z

    The Environmental Control Technology for Coal Utilization program at Argonne National Laboratory (ANL) is assisting DOE by providing information required in the planning and guidance of R and D programs for coal utilization technologies and the associated environmental controls. Both available and developing technologies for the entire energy system from the mine mouth through ultimate waste disposal are analyzed. The tools of technology assessment and systems analysis are used to provide balanced evaluations of the engineering, environmental, and economic aspects of the technologies, as well as identification of synergistic effects and secondary or indirect impacts. This paper deals with three topics: First, the assessments performed to date that indicate the nature of our current work are briefly reviewed. Next, the computerized models and data bases utilized in our assessments are described. Lastly, some of the results from a major ongoing study of environmental controls for industrial boilers are presented and their implications discussed.

  4. Regional Effort to Deploy Clean Coal Technologies

    SciTech Connect (OSTI)

    Gerald Hill; Kenneth Nemeth; Gary Garrett; Kimberly Sams

    2009-01-31T23:59:59.000Z

    The Southern States Energy Board's (SSEB) 'Regional Effort to Deploy Clean Coal Technologies' program began on June 1, 2003, and was completed on January 31, 2009. The project proved beneficial in providing state decision-makers with information that assisted them in removing barriers or implementing incentives to deploy clean coal technologies. This was accomplished through two specific tasks: (1) domestic energy security and diversity; and (2) the energy-water interface. Milestones accomplished during the project period are: (1) Presentations to Annual Meetings of SSEB Members, Associate Member Meetings, and the Gasification Technologies Council. (2) Energy: Water reports - (A) Regional Efforts to Deploy Clean Coal Technologies: Impacts and Implications for Water Supply and Quality. June 2004. (B) Energy-Water Interface Challenges: Coal Bed Methane and Mine Pool Water Characterization in the Southern States Region. 2004. (C) Freshwater Availability and Constraints on Thermoelectric Power Generation in the Southeast U.S. June 2008. (3) Blackwater Interactive Tabletop Exercise - Decatur, Georgia April 2007. (4) Blackwater Report: Blackwater: Energy and Water Interdependency Issues: Best Practices and Lessons Learned. August 2007. (5) Blackwater Report: BLACKWATER: Energy Water Interdependency Issues REPORT SUMMARY. April 2008.

  5. STATISTICS OF FLARES SWEEPING ACROSS SUNSPOTS

    SciTech Connect (OSTI)

    Li Leping; Zhang Jun, E-mail: lepingli@ourstar.bao.ac.c, E-mail: zjun@ourstar.bao.ac.c [Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

    2009-11-20T23:59:59.000Z

    Flare ribbons are always dynamic and sometimes sweep across sunspots. After examining 588 (513 M-class and 75 X-class) flare events observed by the TRACE satellite and the Hinode/Solar Optical Telescope from 1998 May to 2009 May, we choose the event displaying one of the flare ribbons that completely sweeps across the umbra of a main sunspot of the corresponding active region, and finally obtain 20 (7 X-class and 13 M-class) events as our sample. In each event, we define the main sunspot completely swept across by the flare ribbon as the A-sunspot and its nearby opposite polarity sunspot as the B-sunspot. Observations show that the A-sunspot is a following polarity sunspot in 18 events and displays flux emergence in 13 cases. All of the B-sunspots are relatively simple, exhibiting either one main sunspot or one main sunspot and several small neighboring sunspots (pores). In two days prior to the flare occurrence, the A-sunspot rotates in all the cases, while the B-sunspot rotates in 19 events. The total rotating angle of the A-sunspot and B-sunspot rotates is 193{sup 0} on average, and the rotating directions are the same in 12 events. In all cases; the A-sunspot and B-sunspot manifest shear motions with an average shearing angle of 28.{sup 0}5, and in 14 cases, the shearing direction is opposite to the rotating direction of the A-sunspot. We suggest that the emergence, the rotation, and the shear motions of the A-sunspot and B-sunspot result in the phenomenon that flare ribbons sweep across sunspots completely.

  6. Advanced liquefaction using coal swelling and catalyst dispersion techniques. Volume 2, appendices. Final technical report, October 1, 1991--September 30, 1994

    SciTech Connect (OSTI)

    Curtis, C.W. [Auburn Univ., AL (United States); Chander, S. [Pennsylvania State Univ., College Park, PA (United States); Gutterman, C.

    1995-04-01T23:59:59.000Z

    Liquefaction experiments were undertaken using subbituminous Black Thunder mine coal to observe the effects of aqueous SO{sub 2} coal beneficiation and the introduction of various coal swelling solvents and catalyst precursors. Aqueous SO{sub 2} beneficiation of Black Thunder coal removed alkali metals and alkaline earth metals, increased the sulfur content and increased the catalytic liquefaction conversion to THF solubles compared to untreated Black Thunder coal. The liquefaction solvent had varying effects on coal conversion, depending upon the type of solvent added. The hydrogen donor solvent, dihydroanthracene, was most effective, while a coal-derived Wilsonville solvent promoted more coal conversion than did relatively inert 1-methylnaphthalene. Swelling of coal with hydrogen bonding solvents tetrahydrofuran (THF), isopropanol, and methanol, prior to reaction resulted in increased noncatalytic conversion of both untreated and SO{sub 2} treated Black Thunder coals, while dimethylsulfoxide (DMSO), which was absorbed more into the coal than any other swelling solvent, was detrimental to coal conversion. Swelling of SO{sub 2} treated coal before liquefaction resulted in the highest coal conversions; however, the untreated coal showed the most improvements in catalytic reactions when swelled in either THF, isopropanol, or methanol prior to liquefaction. The aprotic solvent DMSO was detrimental to coal conversion.

  7. Blazar Flaring Rates Measured with GLAST

    E-Print Network [OSTI]

    C. D. Dermer; B. L. Dingus

    2003-12-22T23:59:59.000Z

    We derive the minimum observing time scales to detect a blazar at a given flux level with the LAT on GLAST in the scanning and pointing modes. Based upon Phase 1 observations with EGRET, we predict the GLAST detection rate of blazar flares at different flux levels. With some uncertainty given the poor statistics of bright blazars, we predict that a blazar flare with integral flux >~ 200e-8 ph(> 100 MeV) cm^{-2} s^{-1}, which are the best candidates for Target of Opportunity pointings and extensive temporal and spectral studies, should occur every few days.

  8. Blazar Flaring Rates Measured with GLAST

    E-Print Network [OSTI]

    Dermer, C D

    2004-01-01T23:59:59.000Z

    We derive the minimum observing time scales to detect a blazar at a given flux level with the LAT on GLAST in the scanning and pointing modes. Based upon Phase 1 observations with EGRET, we predict the GLAST detection rate of blazar flares at different flux levels. With some uncertainty given the poor statistics of bright blazars, we predict that a blazar flare with integral flux >~ 200e-8 ph(> 100 MeV) cm^{-2} s^{-1}, which are the best candidates for Target of Opportunity pointings and extensive temporal and spectral studies, should occur every few days.

  9. The ENCOAL Mild Coal Gasification Project, A DOE Assessment

    SciTech Connect (OSTI)

    National Energy Technology Laboratory

    2002-03-15T23:59:59.000Z

    This report is a post-project assessment of the ENCOAL{reg_sign} Mild Coal Gasification Project, which was selected under Round III of the U.S. Department of Energy (DOE) Clean Coal Technology (CCT) Demonstration Program. The CCT Demonstration Program is a government and industry cofunded technology development effort to demonstrate a new generation of innovative coal utilization processes in a series of commercial-scale facilities. The ENCOAL{reg_sign} Corporation, a wholly-owned subsidiary of Bluegrass Coal Development Company (formerly SMC Mining Company), which is a subsidiary of Ziegler Coal Holding Company, submitted an application to the DOE in August 1989, soliciting joint funding of the project in the third round of the CCT Program. The project was selected by DOE in December 1989, and the Cooperative Agreement (CA) was approved in September 1990. Construction, commissioning, and start-up of the ENCOAL{reg_sign} mild coal gasification facility was completed in June 1992. In October 1994, ENCOAL{reg_sign} was granted a two-year extension of the CA with the DOE, that carried through to September 17, 1996. ENCOAL{reg_sign} was then granted a six-month, no-cost extension through March 17, 1997. Overall, DOE provided 50 percent of the total project cost of $90,664,000. ENCOAL{reg_sign} operated the 1,000-ton-per-day mild gasification demonstration plant at Triton Coal Company's Buckskin Mine near Gillette, Wyoming, for over four years. The process, using Liquids From Coal (LFC{trademark}) technology originally developed by SMC Mining Company and SGI International, utilizes low-sulfur Powder River Basin (PRB) coal to produce two new fuels, Process-Derived Fuel (PDF{trademark}) and Coal-Derived Liquids (CDL{trademark}). The products, as alternative fuel sources, are capable of significantly lowering current sulfur emissions at industrial and utility boiler sites throughout the nation thus reducing pollutants causing acid rain. In support of this overall objective, the following goals were established for the ENCOAL{reg_sign} Project: Provide sufficient quantity of products for full-scale test burns; Develop data for the design of future commercial plants; Demonstrate plant and process performance; Provide capital and O&M cost data; and Support future LFC{trademark} technology licensing efforts. Each of these goals has been met and exceeded. The plant has been in operation for nearly 5 years, during which the LFC{trademark} process has been demonstrated and refined. Fuels were made, successfully burned, and a commercial-scale plant is now under contract for design and construction.

  10. Development of an Ultra-fine Coal Dewatering Technology and an Integrated Flotation-Dewatering System for Coal Preparation Plants

    SciTech Connect (OSTI)

    Wu Zhang; David Yang; Amar Amarnath; Iftikhar Huq; Scott O'Brien; Jim Williams

    2006-12-22T23:59:59.000Z

    The project proposal was approved for only the phase I period. The goal for this Phase I project was to develop an industrial model that can perform continuous and efficient dewatering of fine coal slurries of the previous flotation process to fine coal cake of {approx}15% water content from 50-70%. The feasibility of this model should be demonstrated experimentally using a lab scale setup. The Phase I project was originally for one year, from May 2005 to May 2006. With DOE approval, the project was extended to Dec. 2006 without additional cost from DOE to accomplish the work. Water has been used in mining for a number of purposes such as a carrier, washing liquid, dust-catching media, fire-retardation media, temperature-control media, and solvent. When coal is cleaned in wet-processing circuits, waste streams containing water, fine coal, and noncombustible particles (ash-forming minerals) are produced. In many coal preparation plants, the fine waste stream is fed into a series of selection processes where fine coal particles are recovered from the mixture to form diluted coal fine slurries. A dewatering process is then needed to reduce the water content to about 15%-20% so that the product is marketable. However, in the dewatering process currently used in coal preparation plants, coal fines smaller than 45 micrometers are lost, and in many other plants, coal fines up to 100 micrometers are also wasted. These not-recovered coal fines are mixed with water and mineral particles of the similar particle size range and discharged to impoundment. The wasted water from coal preparation plants containing unrecoverable coal fine and mineral particles are called tailings. With time the amount of wastewater accumulates occupying vast land space while it appears as threat to the environment. This project developed a special extruder and demonstrated its application in solid-liquid separation of coal slurry, tailings containing coal fines mostly less than 50 micron. The extruder is special because all of its auger surface and the internal barrier surface are covered with the membranes allowing water to drain and solid particles retained. It is believed that there are four mechanisms working together in the dewatering process. They are hydrophilic diffusion flow, pressure flow, agitation and air purging. Hydrophilic diffusion flow is effective with hydrophilic membrane. Pressure flow is due to the difference of hydraulic pressure between the two sides of the membrane. Agitation is provided by the rotation of the auger. Purging is achieved with the air blow from the near bottom of the extruder, which is in vertical direction.

  11. Utilization of solid wastes from the gasification of coal-water slurries

    SciTech Connect (OSTI)

    M.Y. Shpirt; N.P. Goryunova [Institute for Fossil Fuels, Moscow (Russian Federation)

    2009-07-01T23:59:59.000Z

    It was found that only fly and bottom ashes are the solid wastes of water-coal slurry gasification in a direct-flow gasifier. The yields and chemical compositions of fly and bottom ashes obtained after the gasification of water-coal slurries prepared using brown (B) and long-flame (D) coals from the Berezovskii and Mokhovskii strip mines (Kansk-Achinsk and Kuznetsk Basins, respectively) were characterized. Based on an analysis of currently available information, the areas of utilization of fly and bottom ashes after water-coal slurry gasification with dry ash removal were summarized. The use of these wastes in the construction of high-ways and earthwork structures (for the parent coals of B and D grades) and in the manufacture of ash concrete (for the parent coal of D grade) is most promising.

  12. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    ~ - - - - - ' Gri~ing Feed Coal Slurry Feed Pump Filterused to heat a coal-solvent slurry up to the tempera- turePULVERIZED COAL DISSOLVER PRODUCT SLURRY L-. 5 TJ'OON , ~ (

  13. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    a particular type of coal, each of which is inherentlyThere are four classes of coal: bituminous, sub-bituminous,minerals Metallic ores Coal Crude petroleum Gasoline Fuel

  14. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    coal-to-hydrogen plant capital costs .Capital cost of pulverized coal plant ($/kW) Capital cost ofIGCC coal plant ($/kW) Capital cost of repowering PC plant

  15. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    Clean Coal Produced, * T/D (Dry Basis) Installed Plant Cost,Plant Cost, MM$ Net Operating Cost, $/T (Clean Coal Basis)Cost increments fora 25246 ton coal per day SRC plant are

  16. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    5 Figure 1: Map of U.S. coal plants and generating1: Map of U.S. coal plants and generating units (GED, 2006a)of an electric generating coal power plant that would be

  17. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    Council (NCC), 2006, “Coal: America’s Energy Future”, VolumeAssessments to Inform Energy Policy, “Coal: Research andOF RAIL TRANSPORTATION OF COAL The Federal Energy Regulatory

  18. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    OF RAIL TRANSPORTATION OF COAL The Federal Energy RegulatoryPlants Due to Coal Shortages”, Federal Energy RegulatoryCouncil (NCC), 2006, “Coal: America’s Energy Future”, Volume

  19. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    of total electricity generation is because coal plants haveplants come to play an important role in the electricity generationplants will be built in the years around 2020, thereby increasing coal’s share of electricity generation

  20. Geologic map and coal sections of the Pine Ridge quadrangle, Moffat County, Colorado

    SciTech Connect (OSTI)

    Prost, G.L.; Brownfield, M.E.

    1983-01-01T23:59:59.000Z

    The Pine Ridge quadrangle was mapped as part of the US Geological Survey's program of classifying and evaluating mineral lands in the public domain. Coal is the primary resource of econmic interest within the quadrangle and occurs in the Lance and Fort Union Formations. Several unsuccessful oil-and-gas wells have been drilled within the quadrangle. Possible uranium deposits may be found in the Browns Park Formation. Sand and gravel are also present in the quadrangle. The main coal zone in the Lance Formation is found near the middle and contains coal beds ranging in thickness from 0.17 to 0.94 m. These coal beds are discontinuous, grading laterally and vertically into carbonaceous shales. The middle coal zone in the Lance Formation appears to be continuous from east to west across the quadrangle. Coal beds approximately 0.1 m thick occur locally just above the base of the Lance. There are no coal mines or prospects within the formation. Coal beds in the Fort Union Formation, although generally thicker than the Lance coals, are extremely lenticular and irregular in distribution. The Fort Union coal zone is 22 to 51 m thick and the lowermost coal bed is 36 to 177 m above the basal Fort Union contact. Coal beds pinch and swell, are split by shale and sandstone partings, are cut out by river-channel sandstones, and grade laterally and vertically into carbonaceous shales. Inferred coal resources were calculated for the Fort Union Formation coals. An estimated 3278 ha are underlain by approximately 195 million metric tons. Resources were not calculated for coal beds in the Lance Formation.

  1. Pulverized coal fuel injector

    DOE Patents [OSTI]

    Rini, Michael J. (Hebron, CT); Towle, David P. (Windsor, CT)

    1992-01-01T23:59:59.000Z

    A pulverized coal fuel injector contains an acceleration section to improve the uniformity of a coal-air mixture to be burned. An integral splitter is provided which divides the coal-air mixture into a number separate streams or jets, and a center body directs the streams at a controlled angle into the primary zone of a burner. The injector provides for flame shaping and the control of NO/NO.sub.2 formation.

  2. Coal-fueled high-speed diesel engine development

    SciTech Connect (OSTI)

    Kakwani, R. M.; Winsor, R. E.; Ryan, III, T. W.; Schwalb, J. A.; Wahiduzzaman, S.; Wilson, Jr., R. P.

    1991-11-01T23:59:59.000Z

    The objectives of this program are to study combustion feasibility by running Series 149 engine tests at high speeds with a fuel injection and combustion system designed for coal-water-slurry (CWS). The following criteria will be used to judge feasibility: (1) engine operation for sustained periods over the load range at speeds from 600 to 1900 rpm. The 149 engine for mine-haul trucks has a rated speed of 1900 rpm; (2) reasonable fuel economy and coal burnout rate; (3) reasonable cost of the engine design concept and CWS fuel compared to future oil prices.

  3. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of MinesCoalCoal

  4. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of MinesCoalCoal

  5. Coal Development (Nebraska)

    Broader source: Energy.gov [DOE]

    This section provides for the development of newly-discovered coal veins in the state, and county aid for such development.

  6. Coal Market Module This

    Gasoline and Diesel Fuel Update (EIA)

    on fossil energy technologies. This includes 800 million to fund projects under the Clean Coal Power Initiative (CCPI) program, focusing on projects that capture and sequester...

  7. Coal Market Module

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    on fossil energy technologies. This includes 800 million to fund projects under the Clean Coal Power Initiative (CCPI) program, focusing on projects that capture and sequester...

  8. Coal liquefaction quenching process

    DOE Patents [OSTI]

    Thorogood, Robert M. (Macungie, PA); Yeh, Chung-Liang (Bethlehem, PA); Donath, Ernest E. (St. Croix, VI)

    1983-01-01T23:59:59.000Z

    There is described an improved coal liquefaction quenching process which prevents the formation of coke with a minimum reduction of thermal efficiency of the coal liquefaction process. In the process, the rapid cooling of the liquid/solid products of the coal liquefaction reaction is performed without the cooling of the associated vapor stream to thereby prevent formation of coke and the occurrence of retrograde reactions. The rapid cooling is achieved by recycling a subcooled portion of the liquid/solid mixture to the lower section of a phase separator that separates the vapor from the liquid/solid products leaving the coal reactor.

  9. Clean Coal Projects (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation directs the Virginia Air Pollution Control Board to facilitate the construction and implementation of clean coal projects by expediting the permitting process for such projects.

  10. Future Impacts of Coal Distribution Constraints on Coal Cost

    E-Print Network [OSTI]

    McCollum, David L

    2007-01-01T23:59:59.000Z

    coal (PC) or integrated gasification combined cycle ( IGCC)coal (PC) or integrated gasification combined cycle (IGCC)will be integrated gasification combined cycle (IGCC) (Same

  11. COAL DESULFURIZATION PRIOR TO COMBUSTION

    E-Print Network [OSTI]

    Wrathall, J.

    2013-01-01T23:59:59.000Z

    Corporation, 5-25~79. on Coal Liquefaction at ChevronHamersma, et a L, "Meyers Process for Coal Desulfurization,"in Wheelock, Coal Desulfurization, ACS Symp. Ser 64 (1977(.

  12. Illinois Coal Revival Program (Illinois)

    Broader source: Energy.gov [DOE]

    The Illinois Coal Revival Program is a grants program providing partial funding to assist with the development of new, coal-fueled electric generation capacity and coal gasification or IGCC units...

  13. Sandia National Laboratories: Clean Coal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ManagementClean Coal Clean Coal The term clean coal refers to a number of initiatives that seek to reduce or eliminate the hazardous emission or byproducts that result from using...

  14. The Relation between Solar Eruption Topologies and Observed Flare Features I: Flare Ribbons

    E-Print Network [OSTI]

    Savcheva, A; McKillop, S; McCauley, P; Hanson, E; Su, Y; Werner, E; DeLuca, E E

    2015-01-01T23:59:59.000Z

    In this paper we present a topological magnetic field investigation of seven two-ribbon flares in sigmoidal active regions observed with Hinode, STEREO, and SDO. We first derive the 3D coronal magnetic field structure of all regions using marginally unstable 3D coronal magnetic field models created with the flux rope insertion method. The unstable models have been shown to be a good model of the flaring magnetic field configurations. Regions are selected based on their pre-flare configurations along with the appearance and observational coverage of flare ribbons, and the model is constrained using pre-flare features observed in extreme ultraviolet and X-ray passbands. We perform a topology analysis of the models by computing the squashing factor, Q, in order to determine the locations of prominent quasi-separatrix layers (QSLs). QSLs from these maps are compared to flare ribbons at their full extents. We show that in all cases the straight segments of the two J-shaped ribbons are matched very well by the flux...

  15. GRB Flares: A New Detection Algorithm, Previously Undetected Flares, and Implications on GRB Physics

    E-Print Network [OSTI]

    Swenson, C A

    2013-01-01T23:59:59.000Z

    Flares in GRB light curves have been observed since shortly after the discovery of the first GRB afterglow. However, it was not until the launch of the Swift satellite that it was realized how common flares are, appearing in nearly 50% of all X-ray afterglows as observed by the XRT instrument. The majority of these observed X-ray flares are easily distinguishable by eye and have been measured to have up to as much fluence as the original prompt emission. Through studying large numbers of these X-ray flares it has been determined that they likely result from a distinct emission source different than that powering the GRB afterglow. These findings could be confirmed if similar results were found using flares in other energy ranges. However, until now, the UVOT instrument on Swift seemed to have observed far fewer flares in the UV/optical than were seen in the X-ray. This was primarily due to poor sampling and data being spread across multiple filters, but a new optimal co-addition and normalization of the UVOT ...

  16. RADIO EMISSION OF SOLAR FLARE PARTICLE ACCELERATION

    E-Print Network [OSTI]

    RADIO EMISSION OF SOLAR FLARE PARTICLE ACCELERATION A. O. Benz Abstract The solar corona is a very be considered as a particle accelerator. The free mobility of charged particles in a dilute plasma to accelerate particles in resonance. From a plasma physics point of view, acceleration is not surprising

  17. PressurePressure Indiana Coal Characteristics

    E-Print Network [OSTI]

    Fernández-Juricic, Esteban

    TimeTime PressurePressure · Indiana Coal Characteristics · Indiana Coals for Coke · CoalTransportation in Indiana · Coal Slurry Ponds Evaluation · Site Selection for Coal Gasification · Coal-To-Liquids Study, CTL · Indiana Coal Forecasting · Under-Ground Coal Gasification · Benefits of Oxyfuel Combustion · Economic

  18. Fuel blending with PRB coal

    SciTech Connect (OSTI)

    McCartney, R.H.; Williams, R.L. Jr. [Roberts and Schaefer, Chicago, IL (United States)

    2009-03-15T23:59:59.000Z

    Many methods exist to accomplish coal blending at a new or existing power plant. These range from a basic use of the secondary (emergency) stockout/reclaim system to totally automated coal handling facilities with segregated areas for two or more coals. Suitable choices for different sized coal plant are discussed, along with the major components of the coal handling facility affected by Powder River Basin coal. 2 figs.

  19. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of Mines Coal Mining

  20. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of Mines Coal Mining

  1. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of Mines Coal Mining

  2. U.S. Energy Information Administration | Annual Coal Report 2013

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2,EHSSCoal Production and Number of Mines Coal Mining

  3. Pond Creek coal seam in eastern Kentucky - new look at an old resource

    SciTech Connect (OSTI)

    Hower, J.C.; Pollock, J.D.; Klapheke, J.G.

    1986-05-01T23:59:59.000Z

    The Middle Pennsylvania/Westphalian B Pond Creek Coal is an important low-sulfur resource in Pike and Martin Counties, Kentucky. The Breathitt Formation seam, also known as the lower Elkhorn coal, accounted for nearly 40% of Pike County's 1983 production of 22 million tons. Although the coal is nearly mined out through central Pike County, substantial reserves still exist in the northern part of the county. Past studies of the seam by the US Bureau of Mines concentrated on the utility of the seam as a coking blend, with additional consideration of the megascopic and microscopic coal petrology. The authors research has focused on the regional variations in the Pond Creek seam, with emphasis on the petrographic variations.

  4. of Mining & Engineering

    E-Print Network [OSTI]

    Wong, Pak Kin

    & Illness in Mining (3 units) MNE 527 Geomechanics (4 units) MNE 547 Underground Construction Geomechanics

  5. Magnetic changes observed in a solar flare

    SciTech Connect (OSTI)

    Moore, R.L.; Hurford, G.J.; Jones, H.P.; Kane, S.R.

    1984-01-01T23:59:59.000Z

    We present observations of a fairly large impulsive flare (1B/M4, starting 17:22 UT, 1980 April 10). Observations of the microwave/hard X-ray burst show the time development of the impulsive energy release. Chromospheric (H..cap alpha..) and photospheric (Fe I lambda5324) filtergrams and photospheric (Fe I lambda8688) magnetograms, intensitygrams, and velocitygrams show magnetic strucutre, flare emission, mass motion, and magnetic changes. From these observations, we conclude: 1. The flare was triggered by a small emerging magnetic bipole. 2. The peak impulsive energy release occurred in the explosive eruption of a filament from over the magnetic inversion line. Hence: a) The filament eruption was the magnetic transient in the heart of the primary energy release in the chromosphere and corona. b) The primary energy release did not occur in approximately stationary magnetic loops, but on field lines undergoing violet motion and drastic changes in direction. 3. In the photospheric magnetograph lines. Fe I lambda5324 and Fe I lambda8688, the impulsive peak of the flare produced emission in a unipolar area of a sunspot. In synchrony with the emission, the polarity of this area transiently reversed in the lambda8688 magnetigrams; apparently, this was an artifact of the line emission. 4. Within a few minutes after the explosive filament eruption. a) A permanent decrease in magnetic flux accompanied the truncation of an umbra. b) A permanent increase in magnetic flux accompanied the severance of the penumbral bridge to a satellite sunspot. Apparently, thee genuine photospheric magnetic changes were consequences of strong flare-wrought magnetic changes in the chromospher and corona.

  6. CO2 SEQUESTRATION POTENTIAL OF TEXAS LOW-RANK COALS

    SciTech Connect (OSTI)

    Duane A. McVay; Walter B. Ayers Jr.; Jerry L. Jensen

    2003-10-01T23:59:59.000Z

    The objectives of this project are to evaluate the feasibility of carbon dioxide (CO{sub 2}) sequestration in Texas low-rank coals and to determine the potential for enhanced coalbed methane (CBM) recovery as an added benefit of sequestration. The main objective for this reporting period was to further characterize the three areas selected as potential CO{sub 2} sequestration sites. Well-log data are critical for defining depth, thickness, number, and grouping of coal seams at the proposed sequestration sites. Thus, we purchased 12 hardcopy well logs (in addition to 15 well logs obtained during previous quarter) from a commercial source and digitized them to make coal-occurrence maps and cross sections. Detailed correlation of coal zones is important for reservoir analysis and modeling. Thus, we correlated and mapped Wilcox Group subdivisions--the Hooper, Simsboro and Calvert Bluff formations, as well as the coal-bearing intervals of the Yegua and Jackson formations in well logs. To assess cleat properties and describe coal characteristics, we made field trips to Big Brown and Martin Lake coal mines. This quarter we also received CO{sub 2} and methane sorption analyses of the Sandow Mine samples, and we are assessing the results. GEM, a compositional simulator developed by the Computer Modeling Group (CMG), was selected for performing the CO{sub 2} sequestration and enhanced CBM modeling tasks for this project. This software was used to conduct preliminary CO{sub 2} sequestration and methane production simulations in a 5-spot injection pattern. We are continuing to pursue a cooperative agreement with Anadarko Petroleum, which has already acquired significant relevant data near one of our potential sequestration sites.

  7. Coal resources of Kyrgyzstan

    SciTech Connect (OSTI)

    Landis, E.R.; Bostick, N.H.; Gluskoter, H.J.; Johnson, E.A. [Geological Survey, Denver, CO (United States); Harrison, C.D. [CQ Inc., Homer City, PA (United States); Huber, D.W.

    1995-12-31T23:59:59.000Z

    The rugged, mountainous country of Kyrgyzstan contains about one-half of the known coal resources of central Asia (a geographic and economic region that also includes Uzbekistan, Tadjikistan and Turkmenistan). Coal of Jurassic age is present in eight regions in Kyrgyzstan in at least 64 different named localities. Significant coal occurrences of about the same age are present in the central Asian countries of Kazakhstan, China, and Russia. Separation of the coal-bearing rocks into individual deposits results more than earth movements before and during formation of the present-day mountains and basins of the country than from deposition in separate basins.Separation was further abetted by deep erosion and removal of the coal-bearing rocks from many areas, followed by covering of the remaining coal-bearing rocks by sands and gravels of Cenozoic age. The total resources of coal in Kyrgyzstan have been reported as about 30 billion tons. In some of the reported localities, the coal resources are known and adequately explored. In other parts of the republic, the coal resources are inadequately understood or largely unexplored. The resource and reserve inventory of Kyrgyzstan is at best incomplete; for some purposes, such as short-term local and long-range national planning, it may be inadequate. Less than 8% of the total estimated resources are categorized as recoverable reserves, and the amount that is economically recoverable is unknown. The coal is largely of subbituminous and high-volatile C bituminous rank, most has low and medium ash and sulfur contents, and coals of higher rank (some with coking qualities) are present in one region. It is recommended that appropriate analyses and tests be made during planning for utilization.

  8. Search for: "coal" | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    coal" Find + Advanced Search Advanced Search All Fields: "coal" Title: Full Text: Bibliographic Data: Creator Author: Name Name ORCID Search Authors Type: All Accepted...

  9. Illinois Coal Development Program (Illinois)

    Broader source: Energy.gov [DOE]

    The Illinois Coal Development Program seeks to advance promising clean coal technologies beyond research and towards commercialization. The program provides a 50/50 match with private industry...

  10. Clean coal technologies market potential

    SciTech Connect (OSTI)

    Drazga, B. (ed.)

    2007-01-30T23:59:59.000Z

    Looking at the growing popularity of these technologies and of this industry, the report presents an in-depth analysis of all the various technologies involved in cleaning coal and protecting the environment. It analyzes upcoming and present day technologies such as gasification, combustion, and others. It looks at the various technological aspects, economic aspects, and the various programs involved in promoting these emerging green technologies. Contents: Industry background; What is coal?; Historical background of coal; Composition of coal; Types of coal; Environmental effects of coal; Managing wastes from coal; Introduction to clean coal; What is clean coal?; Byproducts of clean coal; Uses of clean coal; Support and opposition; Price of clean coal; Examining clean coal technologies; Coal washing; Advanced pollution control systems; Advanced power generating systems; Pulverized coal combustion (PCC); Carbon capture and storage; Capture and separation of carbon dioxide; Storage and sequestration of carbon dioxide; Economics and research and development; Industry initiatives; Clean Coal Power Initiative; Clean Coal Technology Program; Coal21; Outlook; Case Studies.

  11. Rights and Duties of Mines and Mine Owners, General (Missouri)

    Broader source: Energy.gov [DOE]

    This legislation addresses general operational guidelines for mine owners regarding public notices, fees, land and mineral ownership, requirements for mining in certain municipalities, and mining...

  12. The emissions of gases from abandoned mines: role of atmospheric pressure changes and air temperature on the surface

    E-Print Network [OSTI]

    Boyer, Edmond

    pressure were monitored. Gas flow can be influenced mainly by the temperature difference between external pressure influences gas flow in the coal mines, which can be considered as closed systems. Modelling has confirmed the differential pressure value measured that exceeds friction losses. Key words Mine gas emission

  13. Method for coal liquefaction

    DOE Patents [OSTI]

    Wiser, Wendell H. (Kaysville, UT); Oblad, Alex G. (Salt Lake City, UT); Shabtai, Joseph S. (Salt Lake City, UT)

    1994-01-01T23:59:59.000Z

    A process is disclosed for coal liquefaction in which minute particles of coal in intimate contact with a hydrogenation catalyst and hydrogen arc reacted for a very short time at a temperature in excess of 400.degree. C. at a pressure of at least 1500 psi to yield over 50% liquids with a liquid to gaseous hydrocarbon ratio in excess of 8:1.

  14. Coal liquefaction process

    DOE Patents [OSTI]

    Carr, Norman L. (Allison Park, PA); Moon, William G. (Cheswick, PA); Prudich, Michael E. (Pittsburgh, PA)

    1983-01-01T23:59:59.000Z

    A C.sub.5 -900.degree. F. (C.sub.5 -482.degree. C.) liquid yield greater than 50 weight percent MAF feed coal is obtained in a coal liquefaction process wherein a selected combination of higher hydrogen partial pressure, longer slurry residence time and increased recycle ash content of the feed slurry are controlled within defined ranges.

  15. Wabash River Coal Gasification Repowering Project. Topical report, July 1992--December 1993

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    The Wabash River Coal Gasification Repowering Project (WRCGRP, or Wabash Project) is a joint venture of Destec Energy, Inc. of Houston, Texas and PSI Energy, Inc. of Plainfield, Indiana, who will jointly repower an existing 1950 vintage coal-fired steam generating plant with coal gasification combined cycle technology. The Project is located in West Terre Haute, Indiana at PSI`s existing Wabash River Generating Station. The Project will process locally-mined Indiana high-sulfur coal to produce 262 megawatts of electricity. PSI and Destec are participating in the Department of Energy Clean Coal Technology Program to demonstrate coal gasification repowering of an existing generating unit affected by the Clean Air Act Amendments. As a Clean Coal Round IV selection, the project will demonstrate integration of an existing PSI steam turbine generator and auxiliaries, a new combustion turbine generator, heat recovery steam generator tandem, and a coal gasification facility to achieve improved efficiency, reduced emissions, and reduced installation costs. Upon completion in 1995, the Project will not only represent the largest coal gasification combined cycle power plant in the United States, but will also emit lower emissions than other high sulfur coal-fired power plants and will result in a heat rate improvement of approximately 20% over the existing plant configuration. As of the end of December 1993, construction work is approximately 20% complete for the gasification portion of the Project and 25% complete for the power generation portion.

  16. The use of FBC wastes in the reclamation of coal slurry solids

    SciTech Connect (OSTI)

    Dreher, G.B.

    1991-01-01T23:59:59.000Z

    Fluidized bed combustion (FBC) is a relatively new technology that is used commercially for the combustion of coal. In Illinois, this technology is valuable because it allows the combustion of Illinois high sulfur coal without pollution of the atmosphere with vast quantities of sulfur oxides. In FBC, coal is mixed with limestone or dolomite either before injection into the combustion chamber or in the combustion chamber. As the coal burns, sulfur in the coal is oxidized to SO{sub 2} and this is trapped by reaction with the limestone or dolomite to form gypsum (CaSO{sub 4}{center dot}2H{sub 2}O). Solid by-products from FBC are generally a mixture of calcium oxide, gypsum, coal ash, and unburned coal. The present research project is designed to provide initial data on one possible use of FBC waste. FBC wastes from five different locations in the Illinois are mixed with coal slurry solids from two different coal preparation plants at Illinois coal mines. In mixtures of FBC waste and coal slurry solids, the alkaline components of the FBC waste are expected to react with acid produced by the oxidation of pyrite in the coal slurry solid. An objective of this research is to determine the chemical composition of aqueous leachates from mixtures of FBC wastes, generated under various operating conditions, and the coal slurry solids. These data will be used in future research into the ability of such mixtures to support seed germination and plant growth. The ultimate of this and future research is to determine whether mixed FBC waste and coal slurry solids can be slurry pond reclamation.

  17. LEARNING OUTCOMES EVALUATION Mining Engineering

    E-Print Network [OSTI]

    Missouri-Rolla, University of

    and mineral processing for comprehensive mine design, extraction and mineral beneficiation. Understand geomechanics, geometrics and computer-aided mine design, and optimization of flow processes for designing mine

  18. Coal in China

    SciTech Connect (OSTI)

    Minchener, A.J. [IEA Clean Coal Centre, London (United Kingdom)

    2005-07-01T23:59:59.000Z

    The article gives an overview of the production and use of coal in China, for power generation and in other sectors. Coal use for power generation was 850 million tonnes in 2003 and 800 million tonnes in the non-power sector. The majority of power will continue to be produced from coal, with a trend towards new larger pulverised coal fired units and introduction of circulating fluidised bed combustors. Stricter regulations are forcing introduction of improved pollution control technologies. It seems likely that China will need international finance to supplement private and state investment to carry out a programme to develop and apply clean coal technologies. The author concludes that there is evidence of a market economy being established but there is a need to resolve inconsistencies with the planned aspects of the economy and that additional policies are needed in certain sectors to achieve sustainable development. 1 ref., 2 figs., 2 tabs.

  19. Illinois Clean Coal Institute 2005 annual report. Final technical report for the period September 1st, 2004, through August 31, 2005 on projects funded by the Illinois Department of Commerce and Economic Opportunity

    SciTech Connect (OSTI)

    NONE

    2005-11-08T23:59:59.000Z

    This final technical report contains the abstracts and executive summaries of projects funded through the Illinois Clean Coal Institute solicitation entitled 'Request for proposals No. 04-1(ICCI/RFP04-1)'. Support of these projects is by the Office of Coal Development and Department of Commerce and Economic Opportunity. The projects fall into the following categories: advanced coal mining technologies; coal preparation and coal production business practice; management of coal combustion byproducts; commercialization and technology transfer. Final project extensions are also recorded.

  20. Exploratory research on solvent refined coal liquefaction. Annual technical progress report, January 1-December 31, 1979

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1979. In a series of experiments with varying feed gas composition, low levels (5 to 10 mole %) of carbon monoxide had little effect on the SRC II processing of Pittsburgh Seam coal (Powhatan No. 5 Mine) while higher levels (20 to 40 mole %) resulted in a general degradation of operability and reduced oil yields. Addition of finely divided (approx. 1 ..mu..m) pyrite to the reactive Powhatan coal had little effect on oil yields although the molecular weight of the distillation residue was apparently decreased. When finely divided pyrite and magnetite were added to the less reactive coals from the Loveridge and Blacksville No. 1 Mines (also Pittsburgh Seam), however, substantial increases in oil yields and product quality were obtained. In a comparison of upflow and downflow dissolver configurations with Powhatan coal in the SRC II mode, there was no difference in yields or product quality. A study characterizing specific reactors revealed a significantly higher conversion in the SRC I mode with a reactor approximating plug flow conditions compared to a completely backmixed reactor. In the SRC II mode there was only a slightly higher oil yield with the plug flow reactor.

  1. Comparisons of pyrite variability from selected western Kentucky and western Pennsylvania coals

    SciTech Connect (OSTI)

    Frankie, K.A.; Hower, J.C.

    1983-03-01T23:59:59.000Z

    Pyrite (and marcasite) variation in the lower Kittanning coal of western Pennsylvania has been petrographically characterized using three parameters of size (categories rather than absolute size), morphology (framboidal, euhedral, dendritic, massive, and cleat), and microlithotype (organic) association. The purpose of this study is to evaluate what influence paleo-environments have on the nature of variation of pyrite in coal. Comparison of coals has been done using the percentages of pyrite in the microlithotypes vitrite and clarite. In the lower Kittanning coal, framboidal pyrite is generally less abundant and dendritic pyrite was not observed at all. Euhedral pyrite exhibited no clear variation between the two environments. Massive pyrite was more abundant in the set of samples from the mine with the highest average pyritic sulfur but otherwise exhibited no variation. In contrast, a larger percentage of pyrite in the western Kentucky coals examined is framboidal and dendritic. Mines examined in the Moorman syncline of western Kentucky do have a framboidal pyrite percentage comparable to the lower Kittanning samples, but the percentage of dendritic pyrite (particularly in the Western Kentucky No. 9 coal) is significantly higher for the western Kentucky coals. Bulk petrography of the coals is similar with all having greater than 80% total vitrinite. The association of the pyritic sulfur does, however, change significantly between the various coals studied and particularly between the coals of western Kentucky and among the marine lower Kittanning samples and the fresh water lower Kittanning samples. Among the pyrite in the fresh water coals, massive (perhaps epigenetic) pyrite dominates the associations.

  2. Underground coal gasification field experiment in the high-dipping coal seams

    SciTech Connect (OSTI)

    Yang, L.H.; Liu, S.Q.; Yu, L.; Zhang, W. [China University of Mining & Technology, Xuzhou (China). College of Resources & Geoscience

    2009-07-01T23:59:59.000Z

    In this article the experimental conditions and process of the underground gasification in the Woniushan Mine, Xuzhou, Jiangsu Province are introduced, and the experimental results are analyzed. By adopting the new method of long-channel, big-section, and two-stage underground coal gasification, the daily gas production reaches about 36,000 m{sup 3}, with the maximum output of 103,700 m{sup 3}. The daily average heating value of air gas is 5.04 MJ/m{sup 3}, with 13.57 MJ/m{sup 3} for water gas. In combustible compositions of water gas, H{sub 2} contents stand at over 50%, with both CO and CH{sub 4} contents over 6%. Experimental results show that the counter gasification can form new temperature conditions and increase the gasification efficiency of coal seams.

  3. Avian population densities and species diversity on reclaimed strip-mined land in East-Central Texas

    E-Print Network [OSTI]

    Cantle, Peter Christopher

    1978-01-01T23:59:59.000Z

    . S. , Texas A&M University Cha1rman of Advisory Committee: Dr . Keith A . Arnold The objective of this study was to determine the effects of coal str1 p-mining and subsequent reclamat1on on popu'iation densities and species diversity of a native... of effects of mining and reclamation on 18 avian group associations using the study sites . . . . . 124 126 129 LIST OF FIGURES Figure Areas slated for strip-mining (A, 8 and C; stippling) near Fairfield, Texas. Solid black lines are coal vehicle haul...

  4. Flare Ribbon Energetics in the Early Phase of an SDO Flare

    E-Print Network [OSTI]

    Fletcher, L; Hudson, H S; Innes, D E

    2014-01-01T23:59:59.000Z

    The sites of chromospheric excitation during solar flares are marked by extended extreme ultraviolet ribbons and hard X-ray footpoints. The standard interpretation is that these are the result of heating and bremsstrahlung emission from non-thermal electrons precipitating from the corona. We examine this picture using multi-wavelength observations of the early phase of an M-class flare SOL2010-08-07T18:24. We aim to determine the properties of the heated plasma in the flare ribbons, and to understand the partition of the power input into radiative and conductive losses. Using GOES, SDO/EVE, SDO/AIA and RHESSI we measure the temperature, emission measure and differential emission measure of the flare ribbons, and deduce approximate density values. The non-thermal emission measure, and the collisional thick target energy input to the ribbons are obtained from RHESSI using standard methods. We deduce the existence of a substantial amount of plasma at 10 MK in the flare ribbons, during the pre-impulsive and early...

  5. Consensus Coal Production Forecast for

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    Consensus Coal Production Forecast for West Virginia 2009-2030 Prepared for the West Virginia Summary 1 Recent Developments 2 Consensus Coal Production Forecast for West Virginia 10 Risks References 27 #12;W.Va. Consensus Coal Forecast Update 2009 iii List of Tables 1. W.Va. Coal Production

  6. Flares in GRB afterglows from delayed magnetic dissipation

    E-Print Network [OSTI]

    Dimitrios Giannios

    2006-06-19T23:59:59.000Z

    One of the most intriguing discoveries made by the Swift satellite is the flaring activity in about half of the afterglow lightcurves. Flares have been observed on both long and short duration GRBs and on time scales that range from minutes to ~1 day after the prompt emission. The rapid evolution of some flares led to the suggestion that they are caused by late central engine activity. Here, I propose an alternative explanation that does not need reviving of the central engine. Flares can be powered by delayed magnetic dissipation in strongly magnetized (i.e. with initial Poynting to kinetic flux ratio $\\simmore 1$) ejecta during its deceleration due to interaction with the external medium. A closer look at the length scales of the dissipation regions shows that magnetic dissipation can give rise to fast evolving and energetic flares. Multiple flares are also expected in the context of the model.

  7. Clean coal technology: The new coal era

    SciTech Connect (OSTI)

    Not Available

    1994-01-01T23:59:59.000Z

    The Clean Coal Technology Program is a government and industry cofunded effort to demonstrate a new generation of innovative coal processes in a series of full-scale showcase`` facilities built across the country. Begun in 1986 and expanded in 1987, the program is expected to finance more than $6.8 billion of projects. Nearly two-thirds of the funding will come from the private sector, well above the 50 percent industry co-funding expected when the program began. The original recommendation for a multi-billion dollar clean coal demonstration program came from the US and Canadian Special Envoys on Acid Rain. In January 1986, Special Envoys Lewis and Davis presented their recommendations. Included was the call for a 5-year, $5-billion program in the US to demonstrate, at commercial scale, innovative clean coal technologies that were beginning to emerge from research programs both in the US and elsewhere in the world. As the Envoys said: if the menu of control options was expanded, and if the new options were significantly cheaper, yet highly efficient, it would be easier to formulate an acid rain control plan that would have broader public appeal.

  8. Recovery of Carbon and Nitrogen Cycling and Microbial Community Functionality in a Post-Lignite Mining Rehabilitation Chronosequence in East Texas

    E-Print Network [OSTI]

    Ng, Justin

    2012-10-19T23:59:59.000Z

    Surface mining for coal alters the original soil profile characteristics and the associated physical, chemical, and biological conditions. Our objectives were to compare soil characteristics and the distribution of nutrients to 1 m depth over a...

  9. Evaluation of airborne geophysical surveys for large-scale mapping of contaminated mine pools: draft final report

    SciTech Connect (OSTI)

    Geosciences Division, National Energy Technology Laboratory, US Department of Energy, Pittsburgh, PA; Hammack, R.W.

    2006-12-28T23:59:59.000Z

    Decades of underground coal mining has left about 5,000 square miles of abandoned mine workings that are rapidly filling with water. The water quality of mine pools is often poor; environmental regulatory agencies are concerned because water from mine pools could contaminate diminishing surface and groundwater supplies. Mine pools are also a threat to the safety of current mining operations. Conversely, mine pools are a large, untapped water resource that, with treatment, could be used for a variety of industrial purposes. Others have proposed using mine pools in conjunction with heat pumps as a source of heating and cooling for large industrial facilities. The management or use of mine pool water requires accurate maps of mine pools. West Virginia University has predicted the likely location and volume of mine pools in the Pittsburgh Coalbed using existing mine maps, structure contour maps, and measured mine pool elevations. Unfortunately, mine maps only reflect conditions at the time of mining, are not available for all mines, and do not always denote the maximum extent of mining. Since 1999, the National Energy Technology Laboratory (NETL) has been evaluating helicopter-borne, electromagnetic sensing technologies for the detection and mapping of mine pools. Frequency domain electromagnetic sensors are able to detect shallow mine pools (depth < 50 m) if there is sufficient contrast between the conductance of the mine pool and the conductance of the overburden. The mine pools (conductors) most confidently detected by this technology are overlain by thick, resistive sandstone layers. In 2003, a helicopter time domain electromagnetic sensor was applied to mined areas in southwestern Virginia in an attempt to increase the depth of mine pool detection. This study failed because the mine pool targets were thin and not very conductive. Also, large areas of the surveys were degraded or made unusable by excessive amounts of cultural electromagnetic noise that obscured the subtle mine pool anomalies. However, post-survey modeling suggested that thicker, more conductive mine pools might be detected at a more suitable location. The current study sought to identify the best time domain electromagnetic sensor for detecting mine pools and to test it in an area where the mine pools are thicker and more conductive that those in southwestern Virginia. After a careful comparison of all airborne time domain electromagnetic sensors (including both helicopter and fixed-wing systems), the SkyTEM system from Denmark was determined to be the best technology for this application. Whereas most airborne time domain electromagnetic systems were developed to find large, deep, highly conductive mineral deposits, the SkyTEM system is designed for groundwater exploration studies, an application similar to mine pool detection.

  10. Encoal mild coal gasification project: Commercial plant feasibility study

    SciTech Connect (OSTI)

    NONE

    1997-07-01T23:59:59.000Z

    In order to determine the viability of any Liquids from Coal (LFC) commercial venture, TEK-KOL and its partner, Mitsubishi Heavy Industries (MHI), have put together a technical and economic feasibility study for a commercial-size LFC Plant located at Zeigler Coal Holding Company`s North Rochelle Mine site. This resulting document, the ENCOAL Mild Coal Gasification Plant: Commercial Plant Feasibility Study, includes basic plant design, capital estimates, market assessment for coproducts, operating cost assessments, and overall financial evaluation for a generic Powder River Basin based plant. This document and format closely resembles a typical Phase II study as assembled by the TEK-KOL Partnership to evaluate potential sites for LFC commercial facilities around the world.

  11. Underground coal gasification: a brief review of current status

    SciTech Connect (OSTI)

    Shafirovich, E.; Varma, A. [Purdue University, West Lafayette, IN (United States). School of Chemical Engineering

    2009-09-15T23:59:59.000Z

    Coal gasification is a promising option for the future use of coal. Similarly to gasification in industrial reactors, underground coal gasification (UCG) produces syngas, which can be used for power generation or for the production of liquid hydrocarbon fuels and other valuable chemical products. As compared with conventional mining and surface gasification, UCG promises lower capital/operating costs and also has other advantages, such as no human labor underground. In addition, UCG has the potential to be linked with carbon capture and sequestration. The increasing demand for energy, depletion of oil and gas resources, and threat of global climate change lead to growing interest in UCG throughout the world. In this article, we review the current status of this technology, focusing on recent developments in various countries.

  12. Transportation costs for new fuel forms produced from low rank US coals

    SciTech Connect (OSTI)

    Newcombe, R.J.; McKelvey, D.G. (TMS, Inc., Germantown, MD (USA)); Ruether, J.A. (USDOE Pittsburgh Energy Technology Center, PA (USA))

    1990-09-01T23:59:59.000Z

    Transportation costs are examined for four types of new fuel forms (solid, syncrude, methanol, and slurry) produced from low rank coals found in the lower 48 states of the USA. Nine low rank coal deposits are considered as possible feedstocks for mine mouth processing plants. Transportation modes analyzed include ship/barge, pipelines, rail, and truck. The largest potential market for the new fuel forms is coal-fired utility boilers without emission controls. Lowest cost routes from each of the nine source regions to supply this market are determined. 12 figs.

  13. Carbonation as a binding mechanism for coal/calcium hydroxide pellets

    SciTech Connect (OSTI)

    Rapp, D.M.

    1991-01-01T23:59:59.000Z

    Current coal mining and processing procedures produce a significant quanity of fine coal that is difficult to handle and transport. The objective of this work is to determine if these fines can be economically pelletized with calcium hydroxide, a sulfur capturing sorbent, to produce a clean-burning fuel for fluidized-bed combustors or stoker boilers. To harden these pellets, carbonation, which is the reaction of calcium hydroxide with carbon dioxide to produce a cementitious matrix of calcium carbonate, is being investigated. Previous research indicated that carbonation significantly improved compressive strength, impact and attrition resistance and weatherproofed'' pellets formed with sufficient calcium hydroxide (5 to 10% for minus 28 mesh coal fines).

  14. Flare Gas Recovery in Shell Canada Refineries

    E-Print Network [OSTI]

    Allen, G. D.; Wey, R. E.; Chan, H. H.

    1983-01-01T23:59:59.000Z

    the flow properties for compressor selection? What controls should be incorporated? How much operator and maintenance effort will be required for safe, efficient operation? What kind of process and hardware problems should be watched for? When...? This paper will touch on all these issues. SYSTEM CONFIGURATION A schematic of a typical refinery flare gas recovery facility is shown in Figure I. The facilities include the following pieces of equipment: - compressor suction drum - compressor set...

  15. Recent advances in coal geochemistry

    SciTech Connect (OSTI)

    Chyi, L.L. (Dept. of Geology, Univ. of Akron, Akron, OH (US)); Chou, C.-L. (Illinois State Geological Survey, 615 E. Peabody Drive, Champaign, IL (US))

    1990-01-01T23:59:59.000Z

    Chapters in this collection reflect the recent emphasis both on basic research in coal geochemistry and on applied aspects related to coal utilization. Geochemical research on peat and coal generates compositional data that are required for the following reasons. First, many studies in coal geology require chemical data to aid in interpretation for better understanding of the origin and evolution of peat and coal. Second, coal quality assessment is based largely on composition data, and these data generate useful insights into the geologic factors that control the quality of coal. Third, compositional data are needed for effective utilization of coal resources and to reflect the recent emphasis on both basic research in coal geochemistry and environmental aspects related to coal utilization.

  16. Coal liquefaction process

    DOE Patents [OSTI]

    Wright, C.H.

    1986-02-11T23:59:59.000Z

    A process is described for the liquefaction of coal wherein raw feed coal is dissolved in recycle solvent with a slurry containing recycle coal minerals in the presence of added hydrogen at elevated temperature and pressure. The highest boiling distillable dissolved liquid fraction is obtained from a vacuum distillation zone and is entirely recycled to extinction. Lower boiling distillable dissolved liquid is removed in vapor phase from the dissolver zone and passed without purification and essentially without reduction in pressure to a catalytic hydrogenation zone where it is converted to an essentially colorless liquid product boiling in the transportation fuel range. 1 fig.

  17. Coal liquefaction process

    DOE Patents [OSTI]

    Wright, Charles H. (Overland Park, KS)

    1986-01-01T23:59:59.000Z

    A process for the liquefaction of coal wherein raw feed coal is dissolved in recycle solvent with a slurry containing recycle coal minerals in the presence of added hydrogen at elevated temperature and pressure. The highest boiling distillable dissolved liquid fraction is obtained from a vacuum distillation zone and is entirely recycled to extinction. Lower boiling distillable dissolved liquid is removed in vapor phase from the dissolver zone and passed without purification and essentially without reduction in pressure to a catalytic hydrogenation zone where it is converted to an essentially colorless liquid product boiling in the transportation fuel range.

  18. Clean coal today

    SciTech Connect (OSTI)

    none,

    1990-01-01T23:59:59.000Z

    This is the first issue of the Clean Coal Today publication. Each issue will provide project status reports, feature articles about certain projects and highlight key events concerning the US Clean Coal Technology Demonstration Program. Projects described in this publication include: Colorado-Ute Electric Association Circulating Fluidized Bed Combustor Project at Nucla, Colorado; Babcock and Wilcox coolside and limestone injection multistage burner process (dry sorbent injection); Coal Tech's Advanced Cyclone Combustor Project; and the TIDD pressurized fluidized bed combustor combined cycle facility in Brilliant, Ohio. The status of other projects is included.

  19. Coal | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the YouTube platformBuildingCoal Combustion Products Coal Combustion ProductsCoal to

  20. Coal | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you want toworldPower 2010 1AAcquisitionDevelopmentChooseCoal Coal Coal

  1. Coal | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:PowerCER.png El CER esDatasetCityFundCo-benefits EvaluationCoalCoalCoal

  2. Sealing abandoned mines with treated flyash kills two birds with one stone

    SciTech Connect (OSTI)

    Giacinto, J.F.; Rafalko, L.G.; Petzrick, P. [Environmental Resources Management Inc. (United States)

    2007-02-15T23:59:59.000Z

    Environmentally benign disposal of coal combustion products/by-products (CCPs) such as flyash and bottom ash has been a problem since the first coal-fired power plant went on-line. In recent years, ways have been developed to recycle CCPs into useful commercial products like bricks and roadbase. This article describes an innovative State of Maryland program that is putting CCPs to yet another use: stabilizing abandoned mines to permanently sequester acids and harmful metals. As engineering consultants to the State's Power Plant Research Project (PPRP), Environmental Resources Management (ERM) Inc. has conducted several projects to evaluate and demonstrate the beneficial use of CCPs for deep mine stabilization. These are several hundred abandoned underground mines in western Maryland and several thousand across the Mid-Atlantic Highlands and their proximity to coal-fired plants makes it cost-effective to transport CCPs via existing railroads and highways. 8 figs.

  3. ITP Mining: Exploration and Mining Technology Roadmap

    Broader source: Energy.gov (indexed) [DOE]

    David Bartley Connie Holmes BCS, Incorporated National Mining Association Kenneth G. Bennett David Hyman Caterpillar Inc. National Energy Technology Laboratory Jeanette Berry...

  4. Advanced coal conversion process demonstration. Progress report, January 1, 1992--December 31, 1992

    SciTech Connect (OSTI)

    NONE

    1993-12-01T23:59:59.000Z

    This report contains a description of the technical progress made on the Advanced Coal Conversion Process (ACCP) Demonstration Project from January 1, 1992, through December 31, 1992. This project demonstrates an advanced thermal coal drying process, coupled with physical cleaning techniques, that is designed to upgrade high-moisture, low-rank coals to a high-quality, low-sulfur fuel, registered as the SynCoal{reg_sign} process. The coal is processed through three stages (two heating stages followed by an inert cooling stage) of vibrating fluidized bed reactors that remove chemically bound water, carboxyl groups, and volatile sulfur compounds. After drying, the coal is put through a deep-bed stratifier cleaning process to separate the pyrite-rich ash from the coal. The SynCoal{reg_sign} process enhances low-rank, western coals, usually with a moisture content of 25 to 55 percent, sulfur content of 0.5 to 1.5 percent, and heating value of 5,500 to 9,000 British thermal units per pound (Btu/lb), by producing a stable, upgraded, coal product with a moisture content as low as 1 percent, sulfur content as low as 0.3 percent, and heating value up to 12,000 Btu/lb. The 45-ton-per-hour unit is located adjacent to a unit train loadout facility at Western Energy Company`s Rosebud coal mine near Colstrip, Montana. The demonstration plant is sized at about one-tenth the projected throughput of a multiple processing train commercial facility. The demonstration drying and cooling equipment is currently near commercial size. Rosebud SynCoal Partnership`s ACCP Demonstration Facility entered Phase III, Demonstration Operation, in April 1992 and has been operating in an extended startup mode since that time. As with any new developing technology, a number of unforeseen obstacles have been encountered; however, Rosebud SynCoal Partnership has instituted an aggressive program to overcome these obstacles.

  5. Fixed-bed gasification research using US coals. Volume 17. Gasification and liquids recovery of four US coals

    SciTech Connect (OSTI)

    Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

    1985-12-01T23:59:59.000Z

    A single-staged, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scrubber has been used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and government agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) group. This report is the seventeenth in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This report describes the gasification and pyrolysis liquids recovery test for four different coals: Illinois No. 6, SUFCO, Indianhead lignite, and Hiawatha. This test series spanned from July 15, 1985, through July 28, 1985. 4 refs., 16 figs., 19 tabs.

  6. TOWARD RELIABLE BENCHMARKING OF SOLAR FLARE FORECASTING METHODS

    SciTech Connect (OSTI)

    Bloomfield, D. Shaun; Higgins, Paul A.; Gallagher, Peter T. [Astrophysics Research Group, School of Physics, Trinity College Dublin, College Green, Dublin 2 (Ireland); McAteer, R. T. James, E-mail: shaun.bloomfield@tcd.ie [Department of Astronomy, New Mexico State University, Las Cruces, NM 88003-8001 (United States)

    2012-03-10T23:59:59.000Z

    Solar flares occur in complex sunspot groups, but it remains unclear how the probability of producing a flare of a given magnitude relates to the characteristics of the sunspot group. Here, we use Geostationary Operational Environmental Satellite X-ray flares and McIntosh group classifications from solar cycles 21 and 22 to calculate average flare rates for each McIntosh class and use these to determine Poisson probabilities for different flare magnitudes. Forecast verification measures are studied to find optimum thresholds to convert Poisson flare probabilities into yes/no predictions of cycle 23 flares. A case is presented to adopt the true skill statistic (TSS) as a standard for forecast comparison over the commonly used Heidke skill score (HSS). In predicting flares over 24 hr, the maximum values of TSS achieved are 0.44 (C-class), 0.53 (M-class), 0.74 (X-class), 0.54 ({>=}M1.0), and 0.46 ({>=}C1.0). The maximum values of HSS are 0.38 (C-class), 0.27 (M-class), 0.14 (X-class), 0.28 ({>=}M1.0), and 0.41 ({>=}C1.0). These show that Poisson probabilities perform comparably to some more complex prediction systems, but the overall inaccuracy highlights the problem with using average values to represent flaring rate distributions.

  7. Solvent Refined Coal (SRC) process. Quarterly technical progress report, January 1979-March 1979

    SciTech Connect (OSTI)

    Not Available

    1980-02-01T23:59:59.000Z

    This report summarizes the progress of the Solvent Refined Coal (SRC) Project by the Pittsburg and Midway Coal Mining Co. for the Department of Energy for the period January 1, 1979 to March 31, 1979. Activities included the operation and modification of the Solvent Refined Coal Pilot Plant at Fort Lewis, Washington; the Process Development Unit P-99 at Harmarville, Pennsylvania; and research at Merriam Laboratory in Merriam, Kansas. The Pilot Plant processed Powhatan No. 5 Coal in the SRC-II mode of operation studying the effect of coal particle size and system temperature on coal slurry blending and the effect of carbon monoxide concentration in the reaction feed gas on process yields. January and February were spent completing installation of a fourth High Pressure Separator on Process Development Unit P-99 to better simulate operating conditions for the proposed Demonstration Plant. During March, one run was completed at P-99 feeding Pittsburgh Seam Coal from the Powhatan No. 5 Mine. Merriam investigations included a study of the effect of iron containing additives on SRC-I operation, the addition of carbon monoxide to the feed gas, utilization of a hydrogenated solvent (Cresap process solvent) in the SRC-I mode under both normal and short residence time operating conditions, and development of a simulated distillation technique to determine the entire boiling range distribution of product oils.

  8. Occupational and traning requirements for expanded coal production (as of October 1980). [Forecasting to 1995

    SciTech Connect (OSTI)

    Not Available

    1982-04-01T23:59:59.000Z

    This study was initiated because of the anticipated rapid growth in trained personnel requirements in bituminous coal mining, and because the industry had already experienced significant problems in recruiting skilled manpower in the course of its employment expansion during the 1970's. Employment in bituminous coal mining is projected to nearly double, from 234,000 in 1977 to 456,000 in 1995, as the net result of a projected threefold increase in coal output to nearly 2.0 billion in 1995 and of an expected significant improvement in overall productivity. A large proportion of current coal mining employees are in occupations which require significant amounts of training for effective work performance. Employment growth to 1955 will be most rapid in those occupations requiring the greatest training or educational preparation. The new training infrastructure which has emerged to meet these needs includes both internal, company-operated training programs and those offered by various external providers. Among the latter are: Vocational schools, community colleges, and university extension departments; public agencies, such as MSHA and state mining departments; coal industry trade associations; and vendors or training consultant groups. The Conference Board survey of coal industry training programs, conducted in late 1979, was designed to provide comprehensive data on the scope of the coal industry's own training activities and on related training issues, based on a mail questionnaire survey addressed to all companies producing 300,000 or more tons per year. The training programs are described with emphasis on time changes, regional effects and implications for a coordinated plan.

  9. Data Mining: Opportunities and Challenges

    E-Print Network [OSTI]

    Wu, Xindong

    1 Data Mining: Opportunities and Challenges Xindong Wu University of Vermont, USA; Hefei University Systems 2004 ...... #12;3 Outline 1.1. Data Mining OpportunitiesData Mining Opportunities Major Conferences and Journals in Data Mining Main Topics in Data Mining Some Research Directions in Data Mining 2

  10. China's Coal: Demand, Constraints, and Externalities

    E-Print Network [OSTI]

    Aden, Nathaniel

    2010-01-01T23:59:59.000Z

    of deploying advanced coal power in the Chinese context,”12 2.6. International coal prices and12 III. Chinese Coal

  11. Advanced Coal Wind Hybrid: Economic Analysis

    E-Print Network [OSTI]

    Phadke, Amol

    2008-01-01T23:59:59.000Z

    of Figures Figure ES-1. Advanced Coal Wind Hybrid: Basicviii Figure 1. Advanced-Coal Wind Hybrid: Basic29 Figure 9. Sensitivity to Coal

  12. Advanced Coal Wind Hybrid: Economic Analysis

    E-Print Network [OSTI]

    Phadke, Amol

    2008-01-01T23:59:59.000Z

    farms with advanced coal generation facilities and operatingfarms with advanced coal generation facilities and operatingin the stand-alone coal generation option (IGCC+CCS plant)

  13. China's Coal: Demand, Constraints, and Externalities

    E-Print Network [OSTI]

    Aden, Nathaniel

    2010-01-01T23:59:59.000Z

    services. Power generation Coal increasingly dominates28 Thermal coal electricity generation efficiency alsostudy examines four coal-thermal generation technology types

  14. Coal-Biomass Feed and Gasification

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal-Biomass Feed and Gasification The Coal-Biomass Feed and Gasification Key Technology is advancing scientific knowledge of the production of liquid hydrocarbon fuels from coal...

  15. China's Coal: Demand, Constraints, and Externalities

    E-Print Network [OSTI]

    Aden, Nathaniel

    2010-01-01T23:59:59.000Z

    generation systems. Coal energy density could be increasedfuel reserves were coal by energy content; 19% were oil, andConsumption, 2007 coal/primary energy consumption Source: BP

  16. China's Coal: Demand, Constraints, and Externalities

    E-Print Network [OSTI]

    Aden, Nathaniel

    2010-01-01T23:59:59.000Z

    19 3.4. Coking coal for iron & steels FOB export value for coking coal was relatively stables FOB export value for coking coal significantly increased

  17. Clean Coal Power Initiative | Department of Energy

    Office of Environmental Management (EM)

    Clean Coal Power Initiative Clean Coal Power Initiative "Clean coal technology" describes a new generation of energy processes that sharply reduce air emissions and other...

  18. High-angle-mining system. Task report: definition of system requirements. [Reserves suitable for auger mining

    SciTech Connect (OSTI)

    Brown, E. G.

    1980-12-01T23:59:59.000Z

    The commonly accepted limits for conventional highwall coal augering are seam thickness from 2 to 8 ft, a pitch less than 10/sup 0/, and a penetration depth of 150 to 200 ft. Recovery ratios for these conditions vary from 25 to 50%. One source found, for a limited sample base, an average recovery ratio of about 35%. The factors contributing to recovery losses were noted to be the following: Undersize augers for the seam being mined, hole depths less than maximum obtainable, and excessive spacing between holes. An attempt was made to determine the reserves available for auger mining by reviewing the literature. The augerable reserve base for horizontal seams (0 to 10/sup 0/) between seam limits of 2 to 8 ft for a penetration depth of 200 ft has been estimated at 5 billion tons. An equivalent value estimated for coal residing in steeply pitching seams (25 to 90/sup 0/) is 234 million tons for a penetration depth of 150 ft (or 312 million tons for 200 ft). While no similar value for moderately pitching seams (10 to 25/sup 0/) has been found, most of the information necessary to make such an estimate exists. Recovery ratio, hole size, and spacing, to a large extent, depend on geological factors affecting highwall face integrity and coal competency. The thicker the seam, the more difficult it becomes to achieve high recovery. Narrow and high-ceilinged excavations, coupled with small face openings, appear feasible in competent coal and may be the most promising approach to improve recovery. Another approach to improve recovery is to structurally fill the excavation with a water, crushed rock, and limestone mixture. The cost of this must be weighed against the additional amount of coal recoverable.

  19. Aqueous coal slurry

    DOE Patents [OSTI]

    Berggren, Mark H.; Smit, Francis J.; Swanson, Wilbur W.

    1993-04-06T23:59:59.000Z

    An aqueous slurry containing coal and dextrin as a dispersant. The slurry, in addition to containing dextrin, may contain a conventional dispersant or, alternatively, a pH controlling reagent.

  20. Aqueous coal slurry

    DOE Patents [OSTI]

    Berggren, Mark H. (Golden, CO); Smit, Francis J. (Arvada, CO); Swanson, Wilbur W. (Golden, CO)

    1993-01-01T23:59:59.000Z

    An aqueous slurry containing coal and dextrin as a dispersant. The slurry, in addition to containing dextrin, may contain a conventional dispersant or, alternatively, a pH controlling reagent.

  1. Quarterly coal report

    SciTech Connect (OSTI)

    Young, P.

    1996-05-01T23:59:59.000Z

    The Quarterly Coal Report (QCR) provides comprehensive information about U.S. coal production, distribution, exports, imports, receipts, prices, consumption, and stocks to a wide audience, including Congress, Federal and State agencies, the coal industry, and the general public. Coke production, consumption, distribution, imports, and exports data are also provided. The data presented in the QCR are collected and published by the Energy Information Administration (EIA) to fulfill data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275), as amended. This report presents detailed quarterly data for October through December 1995 and aggregated quarterly historical data for 1987 through the third quarter of 1995. Appendix A displays, from 1987 on, detailed quarterly historical coal imports data, as specified in Section 202 of the Energy Policy and Conservation Amendments Act of 1985 (Public Law 99-58). Appendix B gives selected quarterly tables converted to metric tons.

  2. Clean Coal Research

    Broader source: Energy.gov [DOE]

    DOE's clean coal R&D is focused on developing and demonstrating advanced power generation and carbon capture, utilization and storage technologies for existing facilities and new fossil-fueled...

  3. Clean Coal Technology (Indiana)

    Broader source: Energy.gov [DOE]

    A public utility may not use clean coal technology at a new or existing electric generating facility without first applying for and obtaining from the Utility Regulatory Commission a certificate...

  4. Status Report: USGS coal assessment of the Powder River Basin, Wyoming

    SciTech Connect (OSTI)

    James A. Luppens; Timothy J. Rohrbacher; Jon E. Haacke; David C. Scott; Lee M. Osmonson [USGS, Reston, VA (United States)

    2006-07-01T23:59:59.000Z

    This publication reports on the status of the current coal assessment of the Powder River Basin (PRB) in Wyoming and Montana. This slide program was presented at the Energy Information Agency's 2006 EIA Energy Outlook and Modeling Conference in Washington, DC, on March 27, 2006. The PRB coal assessment will be the first USGS coal assessment to include estimates of both regional coal resources and reserves for an entire coal basin. Extensive CBM and additional oil and gas development, especially in the Gillette coal field, have provided an unprecedented amount of down-hole geological data. Approximately 10,000 new data points have been added to the PRB database since the last assessment (2002) which will provide a more robust evaluation of the single most productive U.S. coal basin. The Gillette coal field assessment, including the mining economic evaluation, is planned for completion by the end of 2006. The geologic portion of the coal assessment work will shift to the northern and northwestern portions of the PRB before the end of 2006 while the Gillette engineering studies are finalized. 7 refs.

  5. Results from the third LLL underground coal gasification experiment at Hoe Creek

    SciTech Connect (OSTI)

    Hill, R.W.; Thorsness, C.B.; Cena, R.J.; Aiman, W.R.; Stephens, D.R.

    1980-05-20T23:59:59.000Z

    A major objective of the US Energy Program is the development of processes to produce clean fuels from coal. Underground coal gasification is one of the most promising of these processes. If successful, underground coal gasification (UCG) would quadruple the proven reserves of the US coal. Cost for products produced from UCG are projected to be 65 to 75% of those from conventional coal conversion. Finally, UCG appears to possess environmental advantages since no mining is involved and there are less solid wastes produced. In this paper we describe results from the Hoe Creek No. 3 underground coal gasification test. The experiment employed a drilled channel between process wells spaced 130' apart. The drilled channel was enlarged by reverse combustion prior to forward gasification. The first week of forward gasification was carried out using air injection, during which 250 tons of coal were consumed yielding an average dry product gas heating value of 114 Btu/scf. Following this phase, steam and oxygen were injected (generally a 50-50 mixture) for 47 days, during which 3945 tons of coal were consumed at an average rate of 84 tons of coal per day and an average dry gas heating value of 217 Btu/scf. The average gas composition during the steam-oxygen phase was 37% H/sub 2/, 5% CH/sub 4/, 11% CO, and 44% CO/sub 2/. Gas recovery was approximately 82% during the test, and the average thermochemical efficiency was near 65%.

  6. Mining Regulations (Missouri)

    Broader source: Energy.gov [DOE]

    This legislation applies to all mines in this state engaged in the mining or extraction of minerals for commercial purposes, except barite, marble, limestone, and sand and gravel, or the...

  7. Coal Liquefaction desulfurization process

    DOE Patents [OSTI]

    Givens, Edwin N. (Bethlehem, PA)

    1983-01-01T23:59:59.000Z

    In a solvent refined coal liquefaction process, more effective desulfurization of the high boiling point components is effected by first stripping the solvent-coal reacted slurry of lower boiling point components, particularly including hydrogen sulfide and low molecular weight sulfur compounds, and then reacting the slurry with a solid sulfur getter material, such as iron. The sulfur getter compound, with reacted sulfur included, is then removed with other solids in the slurry.

  8. Coal liquefaction process

    DOE Patents [OSTI]

    Skinner, Ronald W. (Allentown, PA); Tao, John C. (Perkiomenville, PA); Znaimer, Samuel (Vancouver, CA)

    1985-01-01T23:59:59.000Z

    This invention relates to an improved process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels, especially coal. The claimed improved process includes the hydrocracking of the light SRC mixed with a suitable hydrocracker solvent. The recycle of the resulting hydrocracked product, after separation and distillation, is used to produce a solvent for the hydrocracking of the light solvent refined coal.

  9. Method for coal liquefaction

    DOE Patents [OSTI]

    Wiser, W.H.; Oblad, A.G.; Shabtai, J.S.

    1994-05-03T23:59:59.000Z

    A process is disclosed for coal liquefaction in which minute particles of coal in intimate contact with a hydrogenation catalyst and hydrogen arc reacted for a very short time at a temperature in excess of 400 C at a pressure of at least 1500 psi to yield over 50% liquids with a liquid to gaseous hydrocarbon ratio in excess of 8:1. 1 figures.

  10. Hardgrove grindability study of Powder River Basin and Appalachian coal components in the blend to a midwestern power station

    SciTech Connect (OSTI)

    Padgett, P.L.; Hower, J.C. [Univ. of Kentucky, Lexington, KY (United States)

    1996-12-31T23:59:59.000Z

    Five coals representing four distinct coal sources blended at a midwestern power station were subjected to detailed analysis of their Hardgrove grindability. The coals are: a low-sulfur, high volatile A bituminous Upper Elkhorn No. 3 coal (Pike County, KY); a medium-sulfur, high volatile A bituminous Pittsburgh coal (southwestern PA); a low-sulfur, subbituminous Wyodak coal from two mines in the eastern Powder River Basin (Campbell County, WY). The feed and all samples processed in the Hardgrove grindability test procedure were analyzed for their maceral and microlithotype content. The high-vitrinite Pittsburgh coal and the relatively more petrographically complex Upper Elkhorn No. 3 coal exhibit differing behavior in grindability. The Pittsburgh raw feed, 16x30 mesh fraction (HGI test fraction), and the {minus}30 mesh fraction (HGI reject) are relatively similar petrographically, suggesting that the HGI test fraction is reasonably representative of the whole feed. The eastern Kentucky coal is not as representative of the whole feed, the HGI test fraction having lower vitrinite than the rejected {minus}30 mesh fraction. The Powder River Basin coals are high vitrinite and show behavior similar to the Pittsburgh coal.

  11. Data Warehousing and Data Mining Conference, January 25, 1999, Singapore Data Mining:Data Mining

    E-Print Network [OSTI]

    Wu, Xindong

    Data Warehousing and Data Mining Conference, January 25, 1999, Singapore 1 Welcome Data Mining:Data Mining: Updates in TechnologiesUpdates in Technologies Xindong Wu Dept of Math and Computer Science Colorado School of Mines Golden, Colorado 80401, USA Email: xwu@ mines.edu Home Page: http://kais.mines

  12. of Mining & Engineering

    E-Print Network [OSTI]

    Wong, Pak Kin

    .621.8330 Engr-mining@email.arizona.edu ONLINE GRADUATE CERTIFICATE PROGRAM 15 UNITS YOUR CAREER GEOMECHANICS #12;GEOMECHANICS Department of Mining & Geological Engineering www.mge.arizona.edu Contact the MGE Department for more information: ENGR-mining@email.arizona.edu REQUIRED COURSES (12 units) MNE 527 Geomechanics (3

  13. ENCOAL mild coal gasification demonstration project. Annual report, October 1994--September 1995

    SciTech Connect (OSTI)

    NONE

    1996-01-01T23:59:59.000Z

    This document is the combination of the fourth quarter report (July - September 1995) and the 1995 annual report for the ENCOAL project. The following pages include the background and process description for the project, brief summaries of the accomplishments for the first three quarters, and a detailed fourth quarter report. Its purpose is to convey the accomplishments and current progress of the project. ENCOAL Corporation, a wholly-owned subsidiary of SMC Mining Company (formerly Shell Mining company, now owned by Zeigler Coal Holding Company), has completed the construction and start-up of a mild gasification demonstration plant at Triton Coal Company`s Buckskin Mine near Gillette, Wyoming. The process, using Liquids From Coal (LFC) technology developed by SMC and SGI International, utilizes low-sulfur Powder River Basis coal to produce two new fuels, Process Derived Fuel (PDF) and Coal Derived Liquids (CDL). The products, as alternative fuels sources, are expected to significantly lower current sulfur emissions at industrial and utility boiler sites throughout the nation, thereby reducing pollutants causing acid rain. In the LFC technology, coal is first deeply dried to remove water physically. The temperature is further raised in a second stage which results in decomposition reactions that form the new products. This chemical decomposition (mild gasification) creates gases by cracking reactions from the feed coal. The chemically altered solids are cooled and further processed to make PDF. The gases are cooled, condensing liquids as CDL, and the residual gases are burned in the process for heat. The process release for the ENCOAL plant predicted that one ton of feed coal would yield roughly {1/2} ton of PDF and {1/2} barrel of CDL. By varying plant running conditions, however, it has since been learned that the actual CDL recovery rate may be as much as 15% to 20% above the projections.

  14. Aquatic Ecosystem Enhancement at Mountaintop Mining Sites Symposium

    SciTech Connect (OSTI)

    Black, D. Courtney; Lawson, Peter; Morgan, John; Maggard, Randy; Schor, Horst; Powell, Rocky; Kirk, Ed. J.

    2000-01-12T23:59:59.000Z

    Welcome to this symposium which is part of the ongoing effort to prepare an Environmental Impact Statement (EIS) regarding mountaintop mining and valley fills. The EIS is being prepared by the U.S. Environmental Protection Agency, U.S. Army Corps of Engineers, U.S. Office of Surface Mining, and U.S. Fish and Wildlife Service, in cooperation with the State of West Virginia. Aquatic Ecosystem Enhancement (AEE) at mountaintop mining sites is one of fourteen technical areas identified for study by the EIS Interagency Steering Committee. Three goals were identified in the AEE Work Plan: 1. Assess mining and reclamation practices to show how mining operations might be carried out in a way that minimizes adverse impacts to streams and other environmental resources and to local communities. Clarify economic and technical constraints and benefits. 2. Help citizens clarify choices by showing whether there are affordable ways to enhance existing mining, reclamation, mitigation processes and/or procedures. 3. Ide identify data needed to improve environmental evaluation and design of mining projects to protect the environment. Today’s symposium was proposed in the AEE Team Work Plans but coordinated planning for the event began September 15, 1999 when representatives from coal industry, environmental groups and government regulators met in Morgantown. The meeting participants worked with a facilitator from the Canaan Valley Institute to outline plans for the symposium. Several teams were formed to carry out the plans we outlined in the meeting.

  15. Project {open_quotes}Kovin{close_quotes} - economics of upgraded low-rank coal

    SciTech Connect (OSTI)

    Ljubicic, B.; Anderson, C. [Energy & Environmental Research Center, Grand Forks, ND (United States); Bukurov, Z.; Cvijanovic, P. [Faculty of Technical Sciences, Novi Sad (Yugoslavia); Stajner, K. [Electric Power of Serbia, Novi Sad (Yugoslavia)

    1994-12-31T23:59:59.000Z

    Yugoslavia has large reserves of lignitic coal, some of which are in geological settings that are located below the water table, along and under the Danube River, and are difficult to mine. Since conventional strip mining in the area next to the Danube would be difficult, the Kovin lignite will be mined as course lignite-water slurry. This will be the first time that lignite coal has been mined using dredging equipment. The use of dredging technology for the recovery of multiple lignite seams is an expansion of current dredging practices used to recovery precious and other metals such as tin, as well as diamonds, sand, and gravel from alluvial deposits. The proposed lignite dredging is based on selective mining of several discrete layers. The layers consist of either waste material or lignite and can be directed to a disposal area or to further processing. It is expected that dredging will reduce the environmental impact of the mine, be highly productive since it is fully mechanized, and reduce the cost per ton of lignite. The successful operation at the Kovin mine would also enable lignite to be dredged in other reserve areas where a high water table or significant surface water is present, allowing considerable tonnages of lignite, not currently in reserves, to be moved into the minable reserve category.

  16. Detecting voids in a 0.6 m coal seam, 7 m deep, using seismic reflection

    E-Print Network [OSTI]

    Miller, Richard D.; Steeples, Don W.

    1991-01-01T23:59:59.000Z

    Surface collapse over abandoned subsurface coal mines is a problem in many parts of the world. High-resolution P-wave reflection seismology was successfully used to evaluate the risk of an active sinkhole to a main north-south ...

  17. Low-rank coal study : national needs for resource development. Volume 2. Resource characterization

    SciTech Connect (OSTI)

    Not Available

    1980-11-01T23:59:59.000Z

    Comprehensive data are presented on the quantity, quality, and distribution of low-rank coal (subbituminous and lignite) deposits in the United States. The major lignite-bearing areas are the Fort Union Region and the Gulf Lignite Region, with the predominant strippable reserves being in the states of North Dakota, Montana, and Texas. The largest subbituminous coal deposits are in the Powder River Region of Montana and Wyoming, The San Juan Basin of New Mexico, and in Northern Alaska. For each of the low-rank coal-bearing regions, descriptions are provided of the geology; strippable reserves; active and planned mines; classification of identified resources by depth, seam thickness, sulfur content, and ash content; overburden characteristics; aquifers; and coal properties and characteristics. Low-rank coals are distinguished from bituminous coals by unique chemical and physical properties that affect their behavior in extraction, utilization, or conversion processes. The most characteristic properties of the organic fraction of low-rank coals are the high inherent moisture and oxygen contents, and the correspondingly low heating value. Mineral matter (ash) contents and compositions of all coals are highly variable; however, low-rank coals tend to have a higher proportion of the alkali components CaO, MgO, and Na/sub 2/O. About 90% of the reserve base of US low-rank coal has less than one percent sulfur. Water resources in the major low-rank coal-bearing regions tend to have highly seasonal availabilities. Some areas appear to have ample water resources to support major new coal projects; in other areas such as Texas, water supplies may be constraining factor on development.

  18. Coal gasification power generation, and product market study. Topical report, March 1, 1995--March 31, 1996

    SciTech Connect (OSTI)

    Sheesley, D.; King, S.B.

    1998-12-31T23:59:59.000Z

    This Western Research Institute (WRI) project was part of a WRI Energy Resource Utilization Program to stimulate pilot-scale improved technologies projects to add value to coal resources in the Rocky Mountain region. The intent of this program is to assess the application potential of emerging technologies to western resources. The focus of this project is on a coal resource near the Wyoming/Colorado border, in Colorado. Energy Fuels Corporation/Kerr Coal Company operates a coal mine in Jackson County, Colorado. The coal produces 10,500 Btu/lb and has very low sulfur and ash contents. Kerr Coal Company is seeking advanced technology for alternate uses for this coal. This project was to have included a significant cost-share from the Kerr Coal Company ownership for a market survey of potential products and technical alternatives to be studied in the Rocky Mountain Region. The Energy Fuels Corporation/Kerr Coal Company and WRI originally proposed this work on a cost reimbursable basis. The total cost of the project was priced at $117,035. The Kerr Coal Company had scheduled at least $60,000.00 to be spent on market research for the project that never developed because of product market changes for the company. WRI and Kerr explored potential markets and new technologies for this resource. The first phase of this project as a preliminary study had studied fuel and nonfuel technical alternatives. Through related projects conducted at WRI, resource utilization was studied to find high-value materials that can be targeted for fuel and nonfuel use and eventually include other low-sulfur coals in the Rocky Mountain region. The six-month project work was spread over about a three-year period to observe, measure, and confirm over time-any trends in technology development that would lead to economic benefits in northern Colorado and southern Wyoming from coal gasification and power generation.

  19. Driving Major Solar Flares and Eruptions: Carolus J. Schrijver

    E-Print Network [OSTI]

    Schrijver, Karel

    Driving Major Solar Flares and Eruptions: A Review Carolus J. Schrijver Lockheed Martin Adv. Techn that energize and trigger M- and X-class so- lar flares and associated flux-rope destabilizations. Numerical modeling of specific solar regions is hampered by uncertain coronal-field reconstructions and by poorly

  20. Associated Shale Gas- From Flares to Rig Power 

    E-Print Network [OSTI]

    Wallace, Elizabeth Michelle

    2014-10-16T23:59:59.000Z

    /D, resulting in the flaring of approximately 266 MMcf/D. The Bakken area is one of the most produced shale oil and condensate formations in the US. Reported volumes for this formation suggest that the amount of associated gas flared is enough to power drilling...

  1. Relationships between physical and observational parameters during flares on

    E-Print Network [OSTI]

    Complutense de Madrid, Universidad

    for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA. 3 Armagh Observatory, College Hill, Armagh BT61 9DG 2200 AG Noordwijk, The Netherlands. Summary. A great number of short and weak non white-light flares Solar flares were discovered by Carrington and Hodgson on September 1, 1859 [2, 19]. However

  2. Advanced Coal Wind Hybrid: Economic Analysis

    E-Print Network [OSTI]

    Phadke, Amol

    2008-01-01T23:59:59.000Z

    located in Wyoming using PRB coal. These costs take intolocated in Wyoming using PRB coal and take into account the2007 forecast for coal prices for PRB coal. Transmission We

  3. Coal Problems 1. Name two examples of clean coal technology and in what manner do they clean the coal?

    E-Print Network [OSTI]

    Bowen, James D.

    Coal Problems 1. Name two examples of clean coal technology and in what manner do they clean the coal? a. Coal Washing- Crushing coal then mixing it with a liquid to allow the impurities to settle. b burning coal altogether. With integrated gasification combined cycle (IGCC) systems, steam and hot

  4. Method of extracting coal from a coal refuse pile

    DOE Patents [OSTI]

    Yavorsky, Paul M. (Monongahela, PA)

    1991-01-01T23:59:59.000Z

    A method of extracting coal from a coal refuse pile comprises soaking the coal refuse pile with an aqueous alkali solution and distributing an oxygen-containing gas throughout the coal refuse pile for a time period sufficient to effect oxidation of coal contained in the coal refuse pile. The method further comprises leaching the coal refuse pile with an aqueous alkali solution to solubilize and extract the oxidized coal as alkali salts of humic acids and collecting the resulting solution containing the alkali salts of humic acids. Calcium hydroxide may be added to the solution of alkali salts of humic acid to form precipitated humates useable as a low-ash, low-sulfur solid fuel.

  5. DESULFURIZATION OF COAL MODEL COMPOUNDS AND COAL LIQUIDS

    E-Print Network [OSTI]

    Wrathall, James Anthony

    2011-01-01T23:59:59.000Z

    of coal sulfur K-T gasification process SRC I process U. S.flow sheet of a K-T coal gasification complex for producingProduction via K-T Gasification" © CEP Aug. 78. Feed

  6. EVIDENCE FOR HOT FAST FLOW ABOVE A SOLAR FLARE ARCADE

    SciTech Connect (OSTI)

    Imada, S. [Solar-Terrestrial Environment Laboratory (STEL), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601 (Japan)] [Solar-Terrestrial Environment Laboratory (STEL), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601 (Japan); Aoki, K.; Hara, H.; Watanabe, T. [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka-shi, Tokyo 181-8588 (Japan)] [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka-shi, Tokyo 181-8588 (Japan); Harra, L. K. [UCL-Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT (United Kingdom)] [UCL-Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey RH5 6NT (United Kingdom); Shimizu, T. [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara-shi, Kanagawa 229-8510 (Japan)] [Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara-shi, Kanagawa 229-8510 (Japan)

    2013-10-10T23:59:59.000Z

    Solar flares are one of the main forces behind space weather events. However, the mechanism that drives such energetic phenomena is not fully understood. The standard eruptive flare model predicts that magnetic reconnection occurs high in the corona where hot fast flows are created. Some imaging or spectroscopic observations have indicated the presence of these hot fast flows, but there have been no spectroscopic scanning observations to date to measure the two-dimensional structure quantitatively. We analyzed a flare that occurred on the west solar limb on 2012 January 27 observed by the Hinode EUV Imaging Spectrometer (EIS) and found that the hot (?30MK) fast (>500 km s{sup –1}) component was located above the flare loop. This is consistent with magnetic reconnection taking place above the flare loop.

  7. Design Enhancements To Improve Flare Efficiency

    E-Print Network [OSTI]

    Dooley, K. A.; McLeod, G. M.; Lorenz, M. D.

    , to burn routine vent and purge gases. It was configured as a two-stage system with each stage consisting of multiple burners. The original burners were of a fin plate design. The flare system was designed to operate at low pressure due to venting... was reconfigured to accommodate the lower heat content via the addition of an alternate first stage. The new stage was comprised of three new burners designed for lower flowrates and for gases with lower heating values than the original fin-plate burners...

  8. Smokeless Control of Flare Steam Flow Rate

    E-Print Network [OSTI]

    Agar, J.; Balls, B. W.

    1979-01-01T23:59:59.000Z

    the First Industrial Energy Technology Conference Houston, TX, April 22-25, 1979 FLARE GAS FLOW RATE MEASUREMENT "Accurate measurement of the very low flow rates which are normally present is very difficult" 0, p 15-8). "It is generally considered too...-04-91 Proceedings from the First Industrial Energy Technology Conference Houston, TX, April 22-25, 1979 to calibration conditions. Turndown is 40:1 and pressure loss is negligible. APPLICATION FLOW RATE The mass flow meter described has been applied to a wide...

  9. Advanced Coal Wind Hybrid: Economic Analysis

    E-Print Network [OSTI]

    Phadke, Amol

    2008-01-01T23:59:59.000Z

    application of new clean coal technologies with near zeroapplication of new clean coal technologies with near zero

  10. Composition and properties of coals from the Yurty coal occurrence

    SciTech Connect (OSTI)

    N.G. Vyazova; L.N. Belonogova; V.P. Latyshev; E.A. Pisar'kova [Irkutsk State University, Irkutsk (Russia). Research Institute of Oil and Coal Chemistry and Synthesis

    2008-10-15T23:59:59.000Z

    Coals from the Yurty coal occurrence were studied. It was found that the samples were brown non-coking coals with low sulfur contents (to 1%) and high yields of volatile substances. The high heat value of coals was 20.6-27.7 MJ/kg. The humic acid content varied from 5.45 to 77.62%. The mineral matter mainly consisted of kaolinite, a-quartz, and microcline. The concentration of toxic elements did not reach hazardous values.

  11. Coal combustion system

    DOE Patents [OSTI]

    Wilkes, Colin (Lebanon, IN); Mongia, Hukam C. (Carmel, IN); Tramm, Peter C. (Indianapolis, IN)

    1988-01-01T23:59:59.000Z

    In a coal combustion system suitable for a gas turbine engine, pulverized coal is transported to a rich zone combustor and burned at an equivalence ratio exceeding 1 at a temperature above the slagging temperature of the coal so that combustible hot gas and molten slag issue from the rich zone combustor. A coolant screen of water stretches across a throat of a quench stage and cools the combustible gas and molten slag to below the slagging temperature of the coal so that the slag freezes and shatters into small pellets. The pelletized slag is separated from the combustible gas in a first inertia separator. Residual ash is separated from the combustible gas in a second inertia separator. The combustible gas is mixed with secondary air in a lean zone combustor and burned at an equivalence ratio of less than 1 to produce hot gas motive at temperature above the coal slagging temperature. The motive fluid is cooled in a dilution stage to an acceptable turbine inlet temperature before being transported to the turbine.

  12. (Basic properties of coals and other solids)

    SciTech Connect (OSTI)

    Not Available

    1991-11-25T23:59:59.000Z

    This report discusses basic properties of bituminous, subbituminous, and lignite coals. Properties of coal liquids are also investigated. Heats of immersion in strong acids are found for Pittsburgh {number sign}8, Illinois {number sign}6, and Wyodak coals. Production of coal liquids by distillation is discussed. Heats of titration of coal liquids and coal slurries are reported. (VC)

  13. MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY

    E-Print Network [OSTI]

    Tingley, Joseph V.

    UNIVERSITY OF NEVADA RENO MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY Mackay School of Mines Fifth Edition FOR NEVADA PROSPECTORS AND MINERS by Keith G. Papke and David A. Davis #12;1 MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY Fifth Edition FOR NEVADA PROSPECTORS AND MINERS

  14. Heat Recovery from Coal Gasifiers

    E-Print Network [OSTI]

    Wen, H.; Lou, S. C.

    1981-01-01T23:59:59.000Z

    This paper deals with heat recovery from pressurized entrained and fixed bed coal gasifiers for steam generation. High temperature waste heat, from slagging entrained flow coal gasifier, can be recovered effectively in a series of radiant...

  15. The Caterpillar Coal Gasification Facility 

    E-Print Network [OSTI]

    Welsh, J.; Coffeen, W. G., III

    1983-01-01T23:59:59.000Z

    This paper is a review of one of America's premier coal gasification installations. The caterpillar coal gasification facility located in York, Pennsylvania is an award winning facility. The plant was recognized as the 'pace setter plant of the year...

  16. The world price of coal

    E-Print Network [OSTI]

    Ellerman, A. Denny

    1994-01-01T23:59:59.000Z

    A significant increase in the seaborne trade for coal over the past twenty years has unified formerly separate coal markets into a world market in which prices move in tandem. Due to its large domestic market, the United ...

  17. Low-rank coal research

    SciTech Connect (OSTI)

    Weber, G. F.; Laudal, D. L.

    1989-01-01T23:59:59.000Z

    This work is a compilation of reports on ongoing research at the University of North Dakota. Topics include: Control Technology and Coal Preparation Research (SO{sub x}/NO{sub x} control, waste management), Advanced Research and Technology Development (turbine combustion phenomena, combustion inorganic transformation, coal/char reactivity, liquefaction reactivity of low-rank coals, gasification ash and slag characterization, fine particulate emissions), Combustion Research (fluidized bed combustion, beneficiation of low-rank coals, combustion characterization of low-rank coal fuels, diesel utilization of low-rank coals), Liquefaction Research (low-rank coal direct liquefaction), and Gasification Research (hydrogen production from low-rank coals, advanced wastewater treatment, mild gasification, color and residual COD removal from Synfuel wastewaters, Great Plains Gasification Plant, gasifier optimization).

  18. Hydrogen from Coal Edward Schmetz

    E-Print Network [OSTI]

    Turbines Carbon Capture & Sequestration Carbon Capture & Sequestration The Hydrogen from Coal Program Cells, Turbines, and Carbon Capture & Sequestration #12;Production Goal for Hydrogen from Coal Central Separation System PSA Membrane Membrane Carbon Sequestration Yes (87%) Yes (100%) Yes (100%) Hydrogen

  19. High-pressure coal fuel processor development. Final report

    SciTech Connect (OSTI)

    Greenhalgh, M.L. [Caterpillar, Inc., Peoria, IL (United States)

    1992-12-01T23:59:59.000Z

    Caterpillar shares DOE/METC interest in demonstrating the technology required to displace petroleum-based engine fuels with various forms of low cost coal. Current DOE/METC programs on mild gasification and coal-water-slurries are addressing two approaches to this end. Engine and fuel processor system concept studies by Caterpillar have identified a third, potentially promising, option. This option includes high-pressure fuel processing of run-of-the-mine coal and direct injection of the resulting low-Btu gas stream into an ignition assisted, high compression ratio diesel engine. The compactness and predicted efficiency of the system make it suitable for application to line-haul railroad locomotives. Two overall conclusions resulted from Task 1. First direct injected, ignition assisted Diesel cycle engine combustion systems can be suitably modified to efficiently utilize low-Btu gas fuels. Second, high pressure gasification of selected run-of-the-mine coals in batch-loaded fuel processors is feasible. These two findings, taken together, significantly reduce the perceived technical risk associated with the further development of the proposed coal gas fueled Diesel cycle power plant concept. The significant conclusions from Task 2 were: An engine concept, derived from a Caterpillar 3600 series engine, and a fuel processor concept, based on scaling up a removable-canister configuration from the test rig, appear feasible; and although the results of this concept study are encouraging, further, full-scale component research and development are required before attempting a full-scale integrated system demonstration effort.

  20. Roof screening for underground coal mines: recent developments

    SciTech Connect (OSTI)

    Compton, C.S.; Gallagher, S.; Molinda, G.M.; Mark, C.; Wilson, G.

    2008-06-15T23:59:59.000Z

    The use of screens to control falls of the immediate roof or roof skin (that is between the installed primary and secondary roof supports) is described. 5 figs.