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Modified longwall mining with a German coal planer (plow) in the Pocohontas No. 4 coal bed, Helen, W. Va.

Mining with a Dosco continuous miner on a longwall face

Modified longwall mining with a German coal planer.

Modified longwall mining with German coal planers :summary of operations at five coal mines

Longwall mining in bituminous coal mines with planers, shearer- loaders, and self-advancing hydraulic roof supports

Published Year

• 1950-1959 (4)
• 1960-1969 (1)

Subject

• Coal-mining machinery (5) *
• Longwall mining--Equipment and supplies (5) *
• Mining engineering (1)

Author

• Dowd, James J. (3)
• Haley, Wilbur A. (3)
• Quenon, H. A. (1)
• Shields, J. J. (1)
• Stahl, R. Ward. (1)
• Turnbull, Louis A. (1)

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