30 CFR 57.22220 - Air passing unsealed areas (I-A, II-A, III, and V-A mines).

Regulations last checked for updates: May 19, 2024

Title 30 - Mineral Resources last revised: May 15, 2024

§ 57.22220 - Air passing unsealed areas (I-A, II-A, III, and V-A mines).

Air that has passed by or through unsealed abandoned or unsealed inactive areas and contains 0.25 percent or more methane shall—

(a) Be coursed directly to a return airway;

(b) Be tested daily for methane by a competent person; and

authority: 30 U.S.C. 811.

source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.

cite as: 30 CFR 57.22220