Determining the in-place support of mine roof with rock bolts, White Pine Copper Mine, Michigan

Author:	Merrill, Robert H.
Additional Authors:	Morgan, Thomas A., Stehlik, C. J.
Year:	1961
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:5746
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	5746
Subjects:	Mine roof bolting
	White Pine Copper Mine (Mich.)
Link:	https://hdl.handle.net/2027/mdp.39015078527473