CFR > Title 30 > Chapter I > Subchapter K > Part 56 > Subpart B > Mining Methods CFR > Title 30 > Chapter I > Subchapter K > Part 56 > Subpart B > Mining Methods Current as of: 2024 | Check for updates | Other versions § 56.3130 Wall, bank, and slope stability § 56.3131 Pit or quarry wall perimeter
