30 C.F.R. § 77.201-2

Current through October 31, 2024

Section 77.201-2 - Methane accumulations; change in ventilation

If, at any time, the air in any structure, enclosure or other facility contains 1.0 volume per centum or more of methane changes or adjustments in the ventilation of such installation shall be made at once so that the air shall contain less than 1.0 volume per centum of methane.