The importance of adequate voltage for distribution systems in coal mines

Author:	Gleim, E. J.
Year:	1937
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3347
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3347
Subjects:	Coal mines and mining
	Electricity in mining
Link:	https://hdl.handle.net/2027/mdp.39015078518647