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1. Roof bolting for safety.

Creator Personal:
Bierer, Joseph.
Title:
Roof bolting for safety.
Call Number:
P1066
Date:
1952?
Description:
Pamphlet. At head of title: State of West Virginia, Department of Mines, Charleston, West Virginia.
Subject Topical:
Coal mines and mining--West Virginia--Safety measures., Mine roof bolting.
All:
Coal mines and mining--West Virginia--Safety measures., Mine roof bolting.