Relationships between annulus thickness and the integrity of resin-grouted roof bolts

Author:	Ulrich, Bryan F.
Additional Authors:	Stateham, Raymond M., Wuest, William J.
Year:	1989
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9253
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	9253
Subjects:	Drilling and boring
	Holes
	Mine roof bolts, Resin
Link:	https://hdl.handle.net/2027/mdp.39015078476911