Code of Federal Regulations · Section

§ 57.22240 — Actions At 2.0 Percent Methane (v-a Mines)

30 C.F.R. § 57.22240

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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percent in the mine atmosphere, all persons other than competent persons necessary to make ventilation changes shall be withdrawn from affected areas until methane is reduced to less than 1.0 percent.

30 C.F.R. § 57.22239 30 C.F.R. § 57.22241

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