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Relationships between annulus thickness and the integrity of resin-grouted roof bolts / by Bryan F. Ulrich, William J. Wuest, Raymond M. Stateham

By: Ulrich, Bryan F.
Contributor(s): Wuest, William J | Stateham, Raymond M | United States. Bureau of Mines.
Material type: materialTypeLabelBookSeries: United States Bureau of Mines. Report of investigations 9253. Publisher: Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1989Description: 13 p. : ill. ; 28 cm.Report number: USBM ri-9253Subject(s): Mine roof bolts, Resin | Drilling and boring | Holes
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Bibliography: p. 13

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