Practical considerations in longwall face and gate road support selection and utilization

Author:	Barczak, Thomas M.
Additional Authors:	Schwemmer, David E., Tasillo, Carol L.
Year:	1989
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:22
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	9217
Subjects:	Mine roof control
	Gate roads (Mining)
	Longwall mining--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078457739