Cushioned blasting.

Author:	Denues, A. R. T.
Year:	1940
Document Type:	USBM
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3510
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3510
Subjects:	Firedamp
	Blasting
	Explosives--Testing
Link:	https://hdl.handle.net/2027/mdp.39015078541045