Active list of permissible explosives and blasting devices approved before December 31, 1951

Author:	Hanna, N. E.
Additional Authors:	Damon, G. H.
Year:	1952
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7640
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7640
Subjects:	Explosives--Law and legislation--United States
	Blasting--Equipment and supplies--Law and legislation--United States
	Mining engineering--Equipment supplies--Law and legislation--United States
Link:	https://hdl.handle.net/2027/mdp.39015078455840