Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining
By: by John R. Duda and E. L. Hemingway ; Process Evaluation Group - MMRD.
Contributors: Hemingway, E. L.; United States. Bureau of Mines.
Series: Information circular - Bureau of Mines ; 8715; Information circular (United States. Bureau of Mines) -- 8715.
Publisher: U.S. Dept. of the Interior, Bureau of Mines : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1976
Place of publication: Washington
Language: eng
Number of pages: 25
Subjects: Bituminous coal -- Costs.; Coal mines and mining -- United States -- Cost of operation.
Notes: Mines with annual production of 1.5 and 3 million tons by longwall mining from an 84-inch coalbed.

Chiefly tables.