Ground control instrumentation :a manual for the mining industry

Author:	Bauer, Eric R.
Year:	1985
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:9053
Series:	Information circular / Bureau of Mines ;
Report Number:	9053
Subjects:	Ground control (Mining)--Instruments
	Rock deformation--Measurement
Link:	https://hdl.handle.net/2027/mdp.39015078459230