Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining
An edition of Basic estimated capital investment and operating costs for underground bituminous coal mines developed for longwall mining (1976)
By John R. Duda
Publish Date
1976
Publisher
U.S. Dept. of the Interior, Bureau of Mines : for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Language
eng
Pages
24