Permissible electrically operated pumps

Author:	Ilsley, L. C.
Additional Authors:	Brunot, H. B., Gleim, E. J.
Year:	1940
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3497
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	3497
Subjects:	Coal-mining machinery--Testing
	Coal-mining machinery--Safety measures
	Coal-mining machinery--Electric equipment
	Mine pumps
Link:	https://hdl.handle.net/2027/mdp.39015086546622