Ground control study of a mechanized longwall coal operation in West Virginia

Author:	Lu, Paul H.
Year:	1985
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8929
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	8929
Subjects:	Coal mines and mining--West Virginia--Safety measures
	Longwall mining--West Virginia--Safety measures
	Ground control (Mining)--West Virginia--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078477596