Minimizing fire hazards in coal mines by proper circuit-breaker protection of 250/275-volt direct-current systems

Author:	Gallagher, F. J.
Year:	1951
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7624
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7624
Subjects:	Mine fires--Prevention and control
	Electric circuit-breakers
	Coal mines and mining--Safety measures
	Electric circuits--Direct current--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015078455972