Rotary drilling for strippable coal in the Jarvis Creek Coalfield, Alaska. Open file report

Technical Report · Tue Feb 13 00:00:00 EST 1973

OSTI ID:7096768

Warfield, R S

Twelve relatively short holes were drilled using a CSR (center sample return) drilling system to test the applicability of the drilling system and to test coal continuity in the vicinity of the present mine workings of the Jarvis Creek coalfield. Coal intersections plus geologic evidence indicate depositional continuity over fairly large distances. The CSR drilling system offers an excellent method for determining coal continuity and a system in which a fair (but not quite as good as core) sample may be obtained. (Author) (GRA)

• Research Organization: Bureau of Mines, Washington, DC (USA)
• OSTI ID: 7096768
• Report Number(s): PB-214938/3; BM-OFR-7-73
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ALASKA
SURFACE MINING
ROTARY DRILLING
BOREHOLES
COAL MINING
COAL RESERVES
SAMPLING
CAVITIES
DRILLING
MINING
NORTH AMERICA
PACIFIC NORTHWEST REGION
RESERVES
RESOURCES
USA
012000* - Coal
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011000 - Coal
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