Evaluation of pulsed-phase-lock-loop technology applied to mine roof bolt load measurement
By: by Bernard J. Steblay.
Series: Report of investigations (United States. Bureau of Mines) -- no.9293.
Publisher: Dept. of the Interior
Published: 1989
Place of publication: Washington, DC
Language: eng
Number of pages: 27
Subjects: Mine roof bolting -- Testing; Bolts and nuts -- Fatigue; Phase-locked loops.
Notes:  89600163  t_oclc

Bibliogr.

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