Safety rules for installing and using electrical equipment in coal mines

Year:	1926
Document Type:	USBM
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines :
SUDOC:	C 22.5:402
Series:	Technical paper / United States Department of Commerce, Bureau of Mines ;
Report Number:	402
Subjects:	Coal mines and mining--Safety measures
	Coal mines and mining--Electric equipment
	Coal Mining
Link:	https://hdl.handle.net/2027/mdp.39015078543462