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Shaft-sinking methods, practices, and costs of the Consolidation Coal Co. at its no. 261 mine, Caretta, McDowell County, W. Va.

Published Year

• 1930-1939 (1)

Subject

• Mining engineering (1) *
• Shaft sinking--Costs (1)
• Shaft sinking--Technique (1)

Author

• Kelley, Laurence E. (1) *

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