1. LawStack
  2. Title 30 - Mineral Resources
  3. Chapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
  4. Subchapter K - METAL AND NONMETAL MINE SAFETY AND HEALTH
  5. Part 57 - SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
  6. Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines
  7. Topic - Ventilation
  8. 30 CFR § 57.22238
30 CFR § 57.22238
Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines)
July 29, 2020
CFR

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percent in the mine atmosphere, all persons other than competent persons necessary to make ventilation changes shall be withdrawn from the mine until methane is reduced to less than 0.5 percent.

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§ 57.22237 Actions at 2.0 to 2.5 percent methane in bleeder systems (I-A and III mines)
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§ 57.22239 Actions at 2.0 percent methane (IV mines)

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