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• Anthracite mechanical-mining investigations :use of yielding steel supports (props) in combination with backfilling for mining thick, flat beds
• Experimental longwall mining in a Pennsylvania anthracite mine (In two parts).
• Experimental longwall mining in a Pennsylvania anthracite mine (in two parts).
• Problems in the control of anthracite mine fires :a case study of the Centralia mine fire (August 1980)