2 edition of Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining found in the catalog.
Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining
John R. Duda
by U.S. Dept. of the Interior, Bureau of Mines : for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington
Written in English
|Statement||by John R. Duda and E. L. Hemingway ; Process Evaluation Group - MMRD.|
|Series||Information circular - Bureau of Mines ; 8715, Information circular (United States. Bureau of Mines) -- 8715.|
|Contributions||Hemingway, E. L., United States. Bureau of Mines.|
|The Physical Object|
|Pagination||, 25 p. :|
|Number of Pages||25|
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