Stemming ejection and burden movements from small borehole blasts

Author:	Kopp, John W.
Year:	1987
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9080
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	9080
Subjects:	Blasting
	Mine safety
Link:	https://hdl.handle.net/2027/mdp.39015078469296