Evaluation of structures for roof-fall areas

Author:	Allwes, Richard A.
Additional Authors:	Mangelsdorf, C. P.
Year:	1992
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9414
Series:	Report of investigations / Bureau of Mines ;
Report Number:	9414
Subjects:	Mine roof control
	Metal arches--Testing
Links:	https://hdl.handle.net/2027/mdp.39015077558628
	no.9414 1992