Effects of core recovery, diamond size, and quality on cost of core drilling in gneiss

Author:	Long, Albert E.
Year:	1950
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:4628
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	4628
Subjects:	Diamond bits
	Boring--Costs
	Gneiss
Link:	https://hdl.handle.net/2027/mdp.39015078487009