Some information on automatic coupling of mine cars

Author:	Ilsley, L. C.
Additional Authors:	Gleim, E. J.
Year:	1943
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7245
Series:	Information circular ;
Report Number:	7245
Subjects:	Mine railroad cars--Safety measures
	Couplers (Railroad cars)
Link:	https://hdl.handle.net/2027/mdp.39015074126858