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Experimental longwall mining in a Pennsylvania anthracite mine (In two parts).
Hydraulic mining of anthracite :engineering development studies
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Published Year
1960-1969 (2) *
Subject
Anthracite coal (1)
Hydraulic mining (1)
Mining engineering (1)
Roofs (1)
Author
Buch, John W. (2) *
Brennan, Robert J. (1)
Navrocky, Edward R. (1)
