Roof bolt spacing
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Publication
2012 - U.S. Department of Labor, Mine Safety and Health Adminstration, Arlington, Va.], Virginia
Language
English
Word Count
0 words, Guess
Page Count
0 pages
Identifiers
- OCLC Control Number851378434
- Open LibraryOL54279008M
Subjects
Series Statement
- Procedure instruction letter -- no. I12-V-08
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