Federal Mine Safety Code for Bituminous-Coal and Lignite Mines of the United States by the US Department of the Interior (1946)

Title Federal Mine Safety Code for Bituminous-Coal and Lignite Mines of the United States
Author by the US Department of the Interior
Publisher US Government Printing Office
Copyright 1946
Description 1946 US Code of standards and rules pertaining to safety conditions and practices in US mines
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