CFR > Title 30 - Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH (parts 70 to 90) > 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 to §77.1802)

SUBPART S—Trolley Wires and Trolley Feeder Wires (§77.1800 to §77.1802)