30 C.F.R. § 77.1800 Cutout switches.
Title 30 - Mineral Resources
Trolley wires and trolley feeder wires shall be provided with cutout switches at intervals of not more than 2,000 feet and near the beginning of all branch lines.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart S—Trolley Wires and Trolley Feeder Wires
§ 77.1800 Cutout switches.
