Regulations last checked for updates: May 19, 2024

Title 30 - Mineral Resources last revised: May 15, 2024
§ 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percent in the mine atmosphere, all persons other than competent persons necessary to make ventilation changes shall be withdrawn from the mine until methane is reduced to less than 0.5 percent.

authority: 30 U.S.C. 811.
source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.
cite as: 30 CFR 57.22238