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T X West (U.S.) X Coal mines and mining X
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Multislice mining for thick western coal seams

Published: Washington, D.C. (2401 E St., N.W., MS #9800, Washington 20241) : U.S. Dept. of the Interior, Bureau of Mines, 1990
Format: Print
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Reclaiming the West : the coal industry and surface-mined lands

Published: New York : Inform, inc., c1980
Format: Print
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