Geologic factors in coal mine roof stability :a progress report

Author:	Moebs, Noel N.
Additional Authors:	Stateham, Raymond M.
Year:	1984
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I28.27:8976
Series:	Information circular / United States. Bureau of Mines ;
Report Number:	8976
Subjects:	Mine roof control
	Coal--Geology
	Coal mines and mining--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078455345