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You searched for: Subject Topical Coal mines and mining--Safety measures. Remove constraint Subject Topical: Coal mines and mining--Safety measures. Subject Topical Mine roof control. Remove constraint Subject Topical: Mine roof control.
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1. Laboratory tests of suspension roof support materials and devices.

Creator Personal:
Spindler, G. R.
Title:
Laboratory tests of suspension roof support materials and devices.
Call Number:
P41
Date:
undated
Description:
Typescript. Paper stamped: West Virginia Collection, Aug 9, 1952.
Subject Topical:
Coal mines and mining--Safety measures., Mine roof control.
All:
Coal mines and mining--Safety measures., Mine roof control.