Underground transportation of coal :Progress report 1

Author:	Toenges, Albert L.
Additional Authors:	Jones, Frank A.
Year:	1940
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3519
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3519
Subjects:	Coal mines and mining--Equipment and supplies
	Mine haulage
	Coal-handling machinery
Link:	https://hdl.handle.net/2027/mdp.39015078491464