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Title: Effects of drilling small diameter exhaust shafts in a gassy longwall operation

As the title indicates, this paper deals with the ventilation of a gassy longwall mine through the use of small diameter exhaust shafts. Extensive background information is provided to show the evolution of the mine's ventilation system to correspond with changes in longwall mining techniques, particularly increases in face width. A description of the blind drilled shaft techniques, which proved to be the most economical ventilation choice for US Steel No. 50 Mine, is also included.
Authors:
;
Publication Date:
OSTI Identifier:
20020937
Resource Type:
Conference
Resource Relation:
Conference: 8th US Mine Ventilation Symposium, Rolla, MO (US), 06/11/1999--06/17/1999; Other Information: PBD: 1999; Related Information: In: Proceedings of the 8th US mine ventilation symposium, by Tien, J.C. [ed.], 740 pages.
Publisher:
University of Missouri-Rolla Press, Rolla, MO (US)
Research Org:
US Steel Mining Co., Pineville, WV (US)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL MINING; LONGWALL MINING; VENTILATION SYSTEMS; DESIGN; MINE SHAFTS; WELL DRILLING; METHANE; INDOOR AIR POLLUTION; AIR POLLUTION CONTROL