Remedial and strata replacement techniques on longwall faces :a report on the state of the art

Author:	Dalzell, Robert S.
Additional Authors:	Curth, Ernest A.
Year:	1985
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9014
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	9014
Subjects:	Coal mines and mining--Safety measures
	Ground control (Mining)
Link:	https://hdl.handle.net/2027/mdp.39015078458554