Hazards of the trolley-locomotive haulage system in coal mines

Author:	Harrington, D.
Additional Authors:	Warncke, R. G.
Year:	1945
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7328
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7328
Subjects:	Coal mines and mining--Safety measures
	Mine haulage--Safety measures
	Mine railroads--Safety measures
Link:	https://hdl.handle.net/2027/mdp.39015074127773