1. Regulations
  2. title 30
  3. chapter I
  4. part 57
  5. subpart T
  6. subjgrp 206
  7. § 57.22231

View all text of Subjgrp 206 [§ 57.22201 - § 57.22241]

§ 57.22231 - Actions at 0.25 percent methane (I-B, II-B, V-B, and VI mines).

If methane reaches 0.25 percent in the mine atmosphere, changes shall be made to improve ventilation, and MSHA shall be notified immediately.

AUTHORITY: 30 U.S.C. 811.

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

CITE AS: 30 CFR 57.22231