Investigation of longwall gateroad roof support characteristics at Powhatan No. 4 Mine :instrumentation plan

Author:	Chekan, G. J.
Additional Authors:	Babich, D. R.
Year:	1982
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8628
Series:	Report of investigations / Bureau of Mines ;
Report Number:	8628
Subjects:	Coal mines and mining--Safety measures
	Mine roof control
	Gate roads (Mining)
	Caving mining--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078472167