Geologic conditions affecting coal mine ground control in the western United States

Author:	Sames, Gary P.
Additional Authors:	Laird, Robert B.
Year:	1988
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9172
Series:	Information circular ;
Report Number:	9172
Subjects:	Ground control (Mining)
	Coal--Geology--West (U.S.)
Link:	https://hdl.handle.net/2027/mdp.39015078460410