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Investigation of longwall gateroad roof support characteristics at Powhatan No. 4 Mine :instrumentation plan
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Published Year
1980-1989 (1)
Subject
Caving mining--Safety measures (1) *
Coal mines and mining--Safety measures (1)
Gate roads (Mining) (1)
Mine roof control (1)
Author
Babich, D. R. (1)
Chekan, G. J. (1)
