Evaluation of pulsed-phase-lock-loop technology applied to mine roof bolt load measurement

Author:	Steblay, Bernard J.
Year:	1990
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:9293
Series:	Report of investigations / United States. Bureau of Mines ;
Report Number:	9293
Subjects:	Mine roof bolting--Testing
	Bolts and nuts--Fatigue
	Phase-locked loops
Link:	https://hdl.handle.net/2027/mdp.39015078476432