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.

APA Citation

Katell, S., Hemingway, E. L.., United States. Bureau of Mines. (1974). 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. [Washington]: U.S. Bureau of Mines.

MLA Citation

Katell, Sidney, E. L. Hemingway, and United States. Bureau of Mines. 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. [Washington]: U.S. Bureau of Mines, 1974.