30 C.F.R. § 57.22231

Current through September 30, 2024

Section 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.

30 C.F.R. §57.22231