Fatal accident from entering unventilated raise after blasting

Author:	Gardner, E. D.
Year:	1927
Document Type:	USBI
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6043
Series:	Information circular / Bureau of Mines ;
Report Number:	6043
Subjects:	Mine ventilation
	Blasting
	Mine accidents
	Explosives
Link:	https://hdl.handle.net/2027/mdp.39015086471441