How to use permissible explosives properly

Author:	Harrington, D.
Additional Authors:	Howell, S. P.
Year:	1936
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6871
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	6871
Subjects:	Mine safety
	Accidents--Prevention--United States
	Explosives industry--United States
Link:	https://hdl.handle.net/2027/mdp.39015077568734