		No cover image available MINE HOIST ELECTRICAL SYSTEMS STUDY by UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF MINES. Material type: Book; Format: print ; Literary form: Not fiction Publisher: SPRINGFIELD N.T.I.S Availability: Items available for loan: [Call number: 622.6 U58] (1). Place hold
		No cover image available IMPROVING THE PERFORMANCE OF TUNNEL RAISE AND SHAFT BORING MACHINES FOR COAL MIN by UNITED STATES DEPARTMENT OF THE INTERIOR BUREAU OF MINES. Material type: Book; Format: print ; Literary form: Not fiction Publisher: SPRINGFIELD U.S.DEPT.OF INTERIOR 1986Availability: Items available for loan: [Call number: 622.26 U58] (1). Place hold

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