Mine Safety and Health Administration May 27, 2020 – Federal Register Recent Federal Regulation Documents
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Escapeways and Refuges in Underground Metal and Nonmetal Mines
The Mine Safety and Health Administration (MSHA) cancels a Program Policy Letter (PPL) that was issued on July 29, 2019 to provide guidance on escapeways and refuges used by underground metal and nonmetal miners in emergency situations.
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