30 C.F.R. § 57.12084 Branch circuit disconnecting devices.
Title 30 - Mineral Resources
Disconnecting switches that can be opened safely under load shall be provided underground at all branch circuits extending from primary power circuits near shafts, adits, levels and boreholes.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart K—Electricity
Underground Only
§ 57.12084 Branch circuit disconnecting devices.
