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Selected geologic factors affecting mining of the Pittsburgh coalbed
Methods of determining the orientations of bedrock fracture systems in southwestern Pennsylvania and northern West Virginia
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Published Year
1970-1979 (2)
Subject
Coal mines and mining--Pennsylvania (2)
Coal mines and mining--West Virginia (2) *
Methane (1)
Mining geology (1)
Author
Diamond, W. P. (2) *
McCulloch, C. M. (2)
Bench, B. M. (1)
Bench, Bernard M. (1)
Deul, Maurice. (1)
