Catalog Record: Roof bolting patterns at three-way entry intersections | HathiTrust Digital Library

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Roof bolting patterns at three-way entry intersections /
by S. Okubo and S. S. Peng.

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Main Author: Okubo, Seisuke.
Related Names: Peng, Syd S. 1939-
Language(s): English
Published: Morgantown, W. VA. : Coal Research Bureau, West Virginia University, 1978.
Subjects: Coal mines and mining > Coal mines and mining / Safety measures.
Mine roof bolting.
Physical Description: 35 p. : ill. ; 28 cm.
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  • Pennsylvania State University
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