Testing of a diesel-powered impact cutting head for hard-rock mining

Author:	Kovscek, P. D.
Additional Authors:	Taylor, Charles D., Handewith, H.
Year:	1991
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9374
Series:	Report of investigations / Bureau of Mines ;
Report Number:	9374
Subjects:	Mining machinery--Testing
	Free piston engines--Testing
Links:	https://hdl.handle.net/2027/mdp.39015077558057
	no.9374 1991