30 C.F.R. § 57.12041 Design of switches and starting boxes.
Title 30 - Mineral Resources
Switches and starting boxes shall be of safe design and capacity.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart K—Electricity
Surface and Underground
§ 57.12041 Design of switches and starting boxes.
