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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 30 - Mineral Resources |
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Chapter I - Mine Safety and Health Administration, Department of Labor |
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SubChapter K - Metal and Nonmetal Mine Safety and Health |
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Part 57 - Safety and Health Standards - Underground Metal and Nonmetal Mines |
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Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines |
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Ventilation |
§ 57.22238 - Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines).
Latest version.
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§ 57.22238 Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines).
If methane reaches 2.0 percent in the mine atmosphere, all persons other than competent persons necessary to make ventilation changes shall be withdrawn from the mine until methane is reduced to less than 0.5 percent.