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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
| Author: | Katell, Sidney. |
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| Additional Authors: | Hemingway, E. L., |
| Year: | 1974 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines : |
| SUDOC: | I 28.27:8632 |
| Series: | Information circular - Bureau of Mines ; |
| Report Number: | 8632 |
| Subjects: | Bituminous coal--Costs |
| Coal mines and mining--United States--Cost of operation | |
| Link: | https://hdl.handle.net/2027/mdp.39015078462341 |
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