Drillability studies-laboratory percussive drilling

Author:	Paone, James.
Additional Authors:	Bruce, William E., Madson, Dick.
Year:	1969
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:7300
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	7300
Subjects:	Boring
	Rock-drills
Link:	https://hdl.handle.net/2027/mdp.39015077554312