30 C.F.R. § 57.20020 Unattended mine openings.
Title 30 - Mineral Resources
Access to unattended mine openings shall be restricted by gates or doors, or the openings shall be fenced and posted.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart S—Miscellaneous
§ 57.20020 Unattended mine openings.
