Anthracite mechanical mining investigations :progress report 1 : preliminary underground tests of the Bureau of Mines scraper-shaker loading machine for driving gangways

Author:	Buch, John W.
Additional Authors:	Allan, Andrew,
Year:	1949
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:4500
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	4500
Subjects:	Coal-mining machinery
	Anthracite coal industry--Equipment and supplies
	Loaders (Machines)--Testing
Link:	https://hdl.handle.net/2027/mdp.39015078495929