Ground control study of a mechanized longwall coal operation in West Virginia
By: by Paul H. Lu.
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;; 8929; Report of investigations (United States. Bureau of Mines) ;; 8929.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1985
Place of publication: Pittsburgh, Pa
Language: eng
Number of pages: 34
Subjects: Coal mines and mining -- West Virginia -- Safety measures.; Ground control (Mining) -- West Virginia -- Safety measures.; Longwall mining -- West Virginia -- Safety measures.
Notes: Bibliography: p. 27.