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 § 57.22233
30 CFR § 57.22233
Actions at 0.5 percent methane (I-C mines)
July 29, 2020
CFR

If methane reaches 0.5 percent in the mine atmosphere, ventilation changes shall be made to reduce the level of methane. Until methane is reduced to less than 0.5 percent, no other work shall be permitted in affected areas.

[52 FR 24941, July 1, 1987; 52 FR 27903, July 24, 1987]

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§ 57.22232 Actions at 0.5 percent methane (I-B, II-A, II-B, IV, V-B, and VI mines)
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§ 57.22234 Actions at 1.0 percent methane (I-A, I-B, III, V-A, and V-B mines)

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