053-3 Wyo. Code R. § 57.22220

Current through April 27, 2019

Section 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

(c) Not be used to ventilate work places.

053-3 Wyo. Code R. § 57.22220