Laboratory studies of variables in rotary drilling

Author:	Whelan, James A.
Year:	1962
Document Type:	BMRA
Issuing Agency:	Bureau of Mines,
SUDOC:	I 28.23:6129
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	6129
Subjects:	Drilling and boring machinery
	Rotary percussion drills
Link:	https://hdl.handle.net/2027/mdp.39015078524124