Investigation of electrical equipment, safety lamps, and gas detectors for safety

Author:	Ilsley, L. C.
Year:	1939
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7087
Series:	Information circular / Bureau of Mines ;
Report Number:	7087
Subjects:	Mine safety--Equipment and supplies
	Mine lighting--Equipment and supplies
	Safety lamps
	Gas detectors
Link:	https://hdl.handle.net/2027/mdp.39015078534529