Material handling devices for underground mines
By: by Ernest J. Conway and Richard L. Unger
Contributors: Unger, Richard L; United States. Bureau of Mines
Series: Information circular -- 9212; Information circular (United States. Bureau of Mines) -- 9212
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1989
Place of publication: Pittsburgh, PA
Language: eng
Number of pages: 48
Subjects: Coal mines and mining -- United States -- Safety measures; Mining machinery -- United States
Notes: Distributed to depository libraries in microfiche