Evaluation of pulsed-phase-lock-loop technology applied to mine roof bolt load measurement
By: by Bernard J. Steblay.
Series: Report of investigations ;; 9293; Report of investigations (United States. Bureau of Mines) ;; 9293.
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1990
Place of publication: Washington, D.C
Language: eng
Number of pages: 27
Subjects: Mine roof bolting -- Testing.; Bolts and nuts -- Fatigue.; Phase-locked loops.
Notes: Bibliography: p. 26.