Forgotten frontier a history of Wyoming coal mining door Gardner, A. Dudley

Coal.

Coal.

Reclamation of surface-mined lands

Reclamation, treatment and utilization of coal mining wastes Nottingham, England, September 7-11,1987

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Coal mine ground control door Peng, Syd S., 1939-

Strata mechanics in coal mining door Jeremic, M. L. (Michael L.)

Collective bargaining and the decline of the United Mine Workers door Perry, Charles R.

Coal mining technology theory and practice door Stefanko, Robert

China coal industry yearbook Zhongguo mei tan gong ye nian jian.