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U.S. Department of Energy
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Methane flows in the Pocahontas No. 3 coalbed

Technical Report ·
OSTI ID:5417794
Methane-flow and pressure data taken from a mine in the Pocahontas No. 3 coalbed are compared with flow rates from lump coal obtained in laboratory experiments. From this, it is concluded that the main source of gas is the intact coalbed rather than a ''crushed zone' near the working face. The permeability and sorption capacity of the intact coalbed are calculated and gas emission rates are theoretically accounted for.
Research Organization:
Bureau of Mines, Washington, D.C. (USA)
OSTI ID:
5417794
Report Number(s):
BM-RI-7649
Country of Publication:
United States
Language:
English