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Basic estimated capital investment and operating costs for underground bituminous coal mines :mines with annual production of 1.06 to 4.99 million tons from a 72-inch coalbed

Basic estimated capital investment and operating costs for underground bituminous coal mines :mines with annual production of 1.03 to 3.09 million tons from a 48-inch coalbed : revision of Information circular 8641

Basic estimated capital investment and operating costs for underground bituminous coal mines :mines with annual production of 1.06 to 4.99 million tons from a 72-inch coalbed

Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining :mines with annual production 1.3 and 2.6 million tons by longwall mining from a 48-inch coalbed

Published Year

• 1970-1979 (4)

Subject

• Bituminous coal--Costs (4)
• Coal mines and mining--United States--Cost of operation (4) *

Author

• Hemingway, E. L., (4)
• Katell, Sidney. (3)
• Berkshire, L. H., (2)
• Duda, John R. (1)

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