Relationships between annulus thickness and the integrity of resin-grouted roof bolts / by Bryan F. Ulrich, William J. Wuest, and Raymond M. Stateham.
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Format: | Government Document Book |
Language: | English |
Published: |
Washington, D.C. (2401 E Street, N.W., MS #9800 Washington 20241) :
U.S. Dept. of the Interior, Bureau of Mines,
1989.
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Series: | Report of investigations (United States. Bureau of Mines) ;
9253. |
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