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 / by Sidney Katell and E.L. Hemingway.
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| Main Authors: | , |
| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington] :
U.S. Bureau of Mines,
[1974]
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| Series: | Information circular (United States. Bureau of Mines) ;
8641. |
| Subjects: |
| Item Description: | At head of title: Department of Commerce--Bureau of Mines. |
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| Physical Description: | 31 pages : tables ; 26 cm. |
| Action Note: | committed to retain |