30 C.F.R. § 57.22239

Current through September 30, 2024
Section 57.22239 - Actions at 2.0 percent methane (IV 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percent in the mine atmosphere, all persons other than competent persons necessary to make ventilation changes shall be withdrawn from the mine until methane is reduced to less than 0.5 percent. MSHA shall be notified immediately.

30 C.F.R. §57.22239

52 FR 24941, July 1, 1987, as amended at 52 FR 41397, Oct. 27, 1987; 60 FR 33723, June 29, 1995