StacksVerified U.S. regulatory reference

30 CFR §57.22105

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Smoking or open flames shall not be permitted in a face or raise, or during release of gas from a borehole until tests have been conducted in accordance with § 57.22226 and the methane level has been determined to be below 0.5 percent.