Automated borehole surveying system for steeply inclined cased boreholes

Author:	Tesch, Willard John.
Year:	1976
Document Type:	MAIN
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:8156
Series:	Report of investigations - Bureau of Mines ;
Report Number:	8156
Subjects:	Borings
	Mine surveying
Link:	https://hdl.handle.net/2027/mdp.39015086533240