30 CFR §7.61
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This subpart establishes the specific requirements for MSHA approval of multiple-shot blasting units. It is effective January 22, 1990. Applications for approval or extensions of approval submitted after January 22, 1991 shall meet the requirements of this subpart.