StacksVerified U.S. regulatory reference

30 CFR §57.22302

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Equipment used in or beyond the last open crosscut shall be approved by MSHA under the applicable requirements of 30 CFR parts 18 through 36. Equipment shall not be operated in atmospheres containing 1.0 percent or more methane.