Potential uses for 400 Hz electrical power systems in mining

Author:	Conroy, George J.
Year:	1974
Document Type:	BMRA
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.23:7857
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	7857
Subjects:	Mine safety
	Electricity in mining
Link:	https://hdl.handle.net/2027/mdp.39015078539361