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Regulations and standards applicable to metal and nonmetal mining and milling operations : 30 CFR parts 40, 41, 43, 44, 48, 50, 55, 56, and 57 by United States. Mine Safety and Health Administration. is a book available to read on EtoBox.

Author
United States. Mine Safety and Health Administration.
Publisher
The Administration ; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1980.
Published
1980
Language
EN

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