Longwall roof support technology in the eighties :a state-of-the-art report

Author:	Curth, Ernest A.
Additional Authors:	Listak, Jeffrey M.
Year:	1986
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9066.
Series:	Information circular / United States Department of Interior, Bureau of Mines ;
Report Number:	9066
Subjects:	Longwall mining
	Ground control (Mining)
Link:	https://hdl.handle.net/2027/mdp.39015078459123