Surface and underground coal mine equipment population, 1982
By: by Michael G. Pojar.
Series: Information circular ;; 9078; Information circular (United States. Bureau of Mines) ;; 9078.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1986
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 25
Subjects: Coal-mining machinery -- United States.
Notes: Bibliography: p. 15.