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- Geographic regions:
- Alabama
- Document types:
- Reports of Investigations
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Results 1 - 4 of 4
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1/1/1982 - Reports of InvestigationsThe Bureau of Mines has developed several techniques for draining methane from coalbeds in advance of mining. Drilling long horizontal holes from an underground location is one such technique, which was successfully demonstrated in the Pittsburgh and Su...
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1/1/1978 - Reports of InvestigationsIn this Bureau of Mines investigation, production was monitored for 1 year at over 30 coalbed gas-drainage boreholes located in Alabama, Pennsylvania, and West Virginia.
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1/1/1976 - Reports of InvestigationsIt is estimated that more than 1 trillion cubic feet of methane is contained within the coals of the Mary Lee Group in Jefferson, eastern Tuscaloosa, and southern Walker Counties, Alabama. It is calculated that approximately 90 pct of the methane is at ...
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1/1/1976 - Reports of InvestigationsA geologic study of the Mary Lee Group of coalbeds in the Black Warrior Coal Basin was undertaken to examine coal stratigraphy and determine regional trends and extent of the coalbeds.
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Content source: National Institute for Occupational Safety and Health, Mining Program