30 CFR §77.1001
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Loose hazardous material shall be stripped for a safe distance from the top of pit or highwalls, and the loose unconsolidated material shall be sloped to the angle of repose, or barriers, baffle boards, screens, or other devices be provided that afford equivalent protection.