The Effects of a retreating longwall on a three-entry gate road system

Additional Authors:	Listak, Jeffrey M., Chekan, G. J., Babich, D. R., Allwes, Richard A.
Year:	1985
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8996
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	8996
Subjects:	Mine roof bolting
	Longwall mining
	Pillaring (Mining)
	Gate roads (Mining)
Link:	https://hdl.handle.net/2027/mdp.39015078489708