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Influence of overlying strata on methane emissions in a northern West Virginia coal mine
Clay veins :their occurrence, characteristics, and support
Geologic factors influencing the gas content of coalbeds in southwestern Pennsylvania
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Published Year
1980-1989 (3) *
Subject
Clay veins (1)
Coal mines and mining--Safety measures (1)
Coal mines and mining--West Virginia--Safety measures (1)
Coalbed methane drainage--West Virginia (1)
Coalbed methane--Pennsylvania (1)
Goal--Geology--Pennsylvania (1)
Ground control (Mining) (1)
Sandstone--West Virginia (1)
Author
Ulery, J. P. (3) *
Chase, Frank E. (1)
Molinda, G. M. (1)
