Basic estimated capital investment and operating costs for underground bituminous coal mines
Subtitle: mines with annual production of 1.03 to 3.09 million tons from a 48-inch coalbed : revision of Information circular 8641
By: by Sidney Katell, E. L. Hemingway, and L. H. Berkshire
Series: Information circular - Bureau of Mines -- 8689; Information circular (United States. Bureau of Mines) -- 8689
Publisher: U.S. Dept. of the Interior, Bureau of Mines; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1975
Place of publication: Washington
Language: eng
Number of pages: 32
Subjects: Bituminous coal; Costs; Coal mines and mining; Cost of operation
Other titles: Mines with annual production of 1.03 to 3.09 million tons
Notes: Tables.