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Geologic structures in coal mine roof
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Published Year
1980-1989 (1)
Subject
Coal mines and mining--Appalachian Region--Safety measures (1)
Coal--Geology--Appalachian Region (1)
Mine roof control (1)
Rock bursts (1) *
Author
Ellenberger, John L. (1)
Moebs, Noel N. (1) *