30 CFR §817.99
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
At any time a slide occurs which may have a potential adverse effect on public, property, health, safety, or the environment, the person who conducts the underground mining activities shall notify the regulatory authority by the fastest available means and comply with any remedial measures required by the regulatory authority.