Evaluation of the explosive-anchored rock bolt /
by John B. Shutack and Norman E. Hanna.

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Main Author: Shutack, John B.
Related Names: Hanna, N. E. (Norman E.)
United States. Bureau of Mines.
Language(s): English
Published: [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1968]
Subjects: Mine roof bolting.
Note: "July 1968"--Cover.
Physical Description: 15 p. : ill. ; 26 cm.
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