Title 30
Mineral Resources
5,954 sections · 206 parts · 6 chapterseCFR snapshot through 2026-08-19
Part 77
MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
101–200 of 274 sections
- § 77.603Clamping of trailing cables to equipment.
- § 77.604Protection of trailing cables.
- § 77.605Breaking trailing cable and power cable connections.
- § 77.606Energized trailing cables; handling.
- § 77.606-1Rubber gloves; minimum requirements.
- § 77.700Grounding metallic sheaths, armors, and conduits enclosing power conductors.
- § 77.700-1Approved methods of grounding.
- § 77.701Grounding metallic frames, casings, and other enclosures of electric equipment.
- § 77.701-1Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.
- § 77.701-2Approved methods of grounding metallic frames, casings, and other enclosures of electric equipment receiving power from a direct-current power system.
- § 77.701-3Grounding wires; capacity.
- § 77.701-4Use of grounding connectors.
- § 77.702Protection other than grounding.
- § 77.703Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
- § 77.703-1Approved methods of grounding.
- § 77.704Work on high-voltage lines; deenergizing and grounding.
- § 77.704-1Work on high-voltage lines.
- § 77.704-2Repairs to energized high-voltage lines.
- § 77.704-3Work on energized high-voltage surface lines; reporting.
- § 77.704-4Simultaneous repairs.
- § 77.704-5Installation of protective equipment.
- § 77.704-6Protective clothing; use and inspection.
- § 77.704-7Protective equipment; inspection.
- § 77.704-8Protective equipment; testing and storage.
- § 77.704-9Operating disconnecting or cutout switches.
- § 77.704-10Tying into energized high-voltage surface circuits.
- § 77.704-11Use of grounded messenger wires; ungrounded systems.
- § 77.705Guy wires; grounding.
- § 77.800High-voltage circuits; circuit breakers.
- § 77.800-1Testing, examination, and maintenance of circuit breakers; procedures.
- § 77.800-2Testing, examination, and maintenance of circuit breakers; record.
- § 77.801Grounding resistors.
- § 77.801-1Grounding resistors; continuous current rating.
- § 77.802Protection of high-voltage circuits; neutral grounding resistors; disconnecting devices.
- § 77.803Fail safe ground check circuits on high-voltage resistance grounded systems.
- § 77.803-1Fail safe ground check circuits; maximum voltage.
- § 77.803-2Ground check systems not employing pilot check wires; approval by the Secretary.
- § 77.804High-voltage trailing cables; minimum design requirements.
- § 77.805Cable couplers and connection boxes; minimum design requirements.
- § 77.806Connection of single-phase loads.
- § 77.807Installation of high-voltage transmission cables.
- § 77.807-1High-voltage powerlines; clearances above ground.
- § 77.807-2Booms and masts; minimum distance from high-voltage lines.
- § 77.807-3Movement of equipment; minimum distance from high-voltage lines.
- § 77.808Disconnecting devices.
- § 77.809Identification of circuit breakers and disconnecting switches.
- § 77.810High-voltage equipment; grounding.
- § 77.811Movement of portable substations and transformers.
- § 77.900Low- and medium-voltage circuits serving portable or mobile three-phase alternating current equipment; circuit breakers.
- § 77.900-1Testing, examination, and maintenance of circuit breakers; procedures.
- § 77.900-2Testing, examination, and maintenance of circuit breakers; record.
- § 77.901Protection of low- and medium-voltage three-phase circuits.
- § 77.901-1Grounding resistor; continuous current rating.
- § 77.902Low- and medium-voltage ground check monitor circuits.
- § 77.902-1Fail safe ground check circuits; maximum voltage.
- § 77.902-2Approved ground check systems not employing pilot check wires.
- § 77.902-3Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
- § 77.903Disconnecting devices.
- § 77.904Identification of circuit breakers.
- § 77.905Connection of single-phase loads.
- § 77.906Trailing cables supplying power to low-voltage mobile equipment; ground wires and ground check wires.
- § 77.1000Highwalls, pits and spoil banks; plans.
- § 77.1000-1Filing of plan.
- § 77.1001Stripping; loose material.
- § 77.1002Box cuts; spoil material placement.
- § 77.1003Benches.
- § 77.1004Ground control; inspection and maintenance; general.
- § 77.1005Scaling highwalls; general.
- § 77.1006Highwalls; men working.
- § 77.1007Drilling; general.
- § 77.1008Relocation of drills; safeguards.
- § 77.1009Drill; operation.
- § 77.1010Collaring holes.
- § 77.1011Drill holes; guarding.
- § 77.1012Jackhammers; operation; safeguards.
- § 77.1013Air drills; safeguards.
- § 77.1100Fire protection; training and organization.
- § 77.1101Escape and evacuation; plan.
- § 77.1102Warning signs; smoking and open flame.
- § 77.1103Flammable liquids; storage.
- § 77.1104Accumulations of combustible materials.
- § 77.1105Internal combustion engines; fueling.
- § 77.1106Battery-charging stations; ventilation.
- § 77.1107Belt conveyors.
- § 77.1108Firefighting equipment; requirements; general.
- § 77.1108-1Type and capacity of firefighting equipment.
- § 77.1109Quantity and location of firefighting equipment.
- § 77.1110Examination and maintenance of firefighting equipment.
- § 77.1111Welding, cutting, soldering; use of fire extinguisher.
- § 77.1112Welding, cutting, or soldering with arc or flame; safeguards.
- § 77.1200Mine map.
- § 77.1201Certification of mine maps.
- § 77.1202Availability of mine map.
- § 77.1300Explosives and blasting.
- § 77.1301Explosives; magazines.
- § 77.1302Vehicles used to transport explosives.
- § 77.1303Explosives, handling and use.
- § 77.1304Blasting agents; special provisions.
- § 77.1400Personnel hoists and elevators.
- § 77.1401Automatic controls and brakes.