Contents
- 75.1 Scope.
- 75.100 Certified person.
- 75.1000 Cutout switches.
- 75.1001 Overcurrent protection.
- 75.1001-1 -1 Devices for overcurrent protection; testing and calibration requirements; records.
- 75.1002 Installation of electric equipment and conductors; permissibility.
- 75.1003 Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires.
- 75.1003-1 -1 Other requirements for guarding of trolley wires and trolley feeder wires.
- 75.1003-2 -2 Requirements for movement of off-track mining equipment in areas of active workings where energized trolley wires or trolley feeder wires are present; pre-movement requirements; certified and qualified persons.
- 75.1100 Requirements.
- 75.1100-1 -1 Type and quality of firefighting equipment.
- 75.1100-2 -2 Quantity and location of firefighting equipment.
- 75.1100-3 -3 Condition and examination of firefighting equipment.
- 75.1101 Deluge-type water sprays, foam generators; main and secondary belt-conveyor drives.
- 75.1101-1 -1 Deluge-type water spray systems.
- 75.1101-10 -10 Water sprinkler systems; fire warning devices at belt drives.
- 75.1101-11 -11 Inspection of water sprinkler systems.
- 75.1101-12 -12 Equivalent dry-pipe system.
- 75.1101-13 -13 Dry powder chemical systems; general.
- 75.1101-14 -14 Installation of dry powder chemical systems.
- 75.1101-15 -15 Construction of dry powder chemical systems.
- 75.1101-16 -16 Dry powder chemical systems; sensing and fire-suppression devices.
- 75.1101-17 -17 Sealing of dry powder chemical systems.
- 75.1101-18 -18 Dry powder requirements.
- 75.1101-19 -19 Nozzles; flow rate and direction.
- 75.1101-2 -2 Installation of deluge-type sprays.
- 75.1101-20 -20 Safeguards for dry powder chemical systems.
- 75.1101-21 -21 Back-up water system.
- 75.1101-22 -22 Inspection of dry powder chemical systems.
- 75.1101-3 -3 Water requirements.
- 75.1101-4 -4 Branch lines.
- 75.1101-5 -5 Installation of foam generator systems.
- 75.1101-6 -6 Water sprinkler systems; general.
- 75.1101-7 -7 Installation of water sprinkler systems; requirements.
- 75.1101-8 -8 Water sprinkler systems; arrangement of sprinklers.
- 75.1101-9 -9 Back-up water system.
- 75.1102 Slippage and sequence switches.
- 75.1103 Automatic fire warning devices.
- 75.1103-1 -1 Automatic fire sensors.
- 75.1103-10 -10 Fire suppression systems; additional requirements.
- 75.1103-11 -11 Tests of fire hydrants and fire hose; record of tests.
- 75.1103-2 -2 Automatic fire sensors; approved components; installation requirements.
- 75.1103-3 -3 Automatic fire sensor and warning device systems; minimum requirements; general.
- 75.1103-4 -4 Automatic fire sensor and warning device systems; installation; minimum requirements.
- 75.1103-5 -5 Automatic fire warning devices; actions and response.
- 75.1103-6 -6 Automatic fire sensors; actuation of fire suppression systems.
- 75.1103-7 -7 Electrical components; permissibility requirements.
- 75.1103-8 -8 Automatic fire sensor and warning device systems; examination and test requirements.
- 75.1103-9 -9 Minimum requirements; fire suppression materials and location; maintenance of entries and crosscuts; access doors; communications; fire crews; high-expansion foam devices.
- 75.1104 Underground storage, lubricating oil and grease.
- 75.1106 Welding, cutting, or soldering with arc or flame underground.
- 75.1106-1 -1 Test for methane.
- 75.1106-2 -2 Transportation of liquefied and nonliquefied compressed gas cylinders; requirements.
- 75.1106-3 -3 Storage of liquefied and nonliquefied compressed gas cylinders; requirements.
- 75.1106-4 -4 Use of liquefied and nonliquefied compressed gas cylinders; general requirements.
- 75.1106-5 -5 Maintenance and tests of liquefied and nonliquefied compressed gas cylinders; accessories and equipment; requirements.
- 75.1106-6 -6 Exemption of small low pressure gas cylinders containing nonflammable or nonexplosive gas mixtures.
- 75.1107 Fire suppression devices.
- 75.1107-1 -1 Fire-resistant hydraulic fluids and fire suppression devices on underground equipment.
- 75.1107-10 -10 High expansion foam devices; minimum capacity.
- 75.1107-11 -11 Extinguishing agents; requirements on mining equipment employed in low coal.
- 75.1107-12 -12 Inerting of mine atmosphere prohibited.
- 75.1107-13 -13 Approval of other fire suppression devices.
- 75.1107-14 -14 Guards and handrails; requirements where fire suppression devices are employed.
- 75.1107-15 -15 Fire suppression devices; hazards; training of miners.
- 75.1107-16 -16 Inspection of fire suppression devices.
- 75.1107-17 -17 Incorporation by reference; availability of publications.
- 75.1107-2 -2 Approved fire-resistant hydraulic fluids; minimum requirements.
- 75.1107-3 -3 Fire suppression devices; approved components; installation requirements.
- 75.1107-4 -4 Automatic fire sensors and manual actuators; installation; minimum requirements.
- 75.1107-5 -5 Electrical components of fire suppression devices; permissibility requirements.
- 75.1107-6 -6 Capacity of fire suppression devices; location and direction of nozzles.
- 75.1107-7 -7 Water spray devices; capacity; water supply; minimum requirements.
- 75.1107-8 -8 Fire suppression devices; extinguishant supply systems.
- 75.1107-9 -9 Dry chemical devices; capacity; minimum requirements.
- 75.1108 Approved conveyor belts.
- 75.1200 Mine map.
- 75.1200-1 -1 Additional information on mine map.
- 75.1200-2 -2 Accuracy and scale of mine maps.
- 75.1201 Certification.
- 75.1202 Temporary notations, revisions, and supplements.
- 75.1202-1 -1 Temporary notations, revisions, and supplements.
- 75.1203 Availability of mine map.
- 75.1204 Mine closure; filing of map with Secretary.
- 75.1204-1 -1 Places to give notice and file maps.
- 75.1300 Definitions.
- 75.1301 Qualified person.
- 75.1310 Explosives and blasting equipment.
- 75.1311 Transporting explosives and detonators.
- 75.1312 Explosives and detonators in underground magazines.
- 75.1313 Explosives and detonators outside of magazines.
- 75.1314 Sheathed explosive units.
- 75.1315 Boreholes for explosives.
- 75.1316 Preparation before blasting.
- 75.1317 Primer cartridges.
- 75.1318 Loading boreholes.
- 75.1319 Weight of explosives permitted in boreholes in bituminous and lignite mines.
- 75.1320 Multiple-shot blasting.
- 75.1321 Permits for firing more than 20 boreholes and for use of nonpermissible blasting units.
- 75.1322 Stemming boreholes.
- 75.1323 Blasting circuits.
- 75.1324 Methane concentration and tests.
- 75.1325 Firing procedures.
- 75.1326 Examination after blasting.
- 75.1327 Misfires.
- 75.1328 Damaged or deteriorated explosives and detonators.
- 75.1400 Hoisting equipment; general.
- 75.1400-1 -1 Hoists; brakes, capability.
- 75.1400-2 -2 Hoists; tests of safety catches; records.
- 75.1400-3 -3 Daily examination of hoisting equipment.
- 75.1400-4 -4 Certifications and records of daily examinations.
- 75.1401 Hoists; rated capacities; indicators.
- 75.1401-1 -1 Hoists; indicators.
- 75.1402 Communication between shaft stations and hoist room.
- 75.1402-1 -1 Communication between shaft stations and hoist room.
- 75.1402-2 -2 Tests of signaling systems.
- 75.1403 Other safeguards.
- 75.1403-1 -1 General criteria.
- 75.1403-10 -10 Criteria—Haulage; general.
- 75.1403-11 -11 Criteria—Entrances to shafts and slopes.
- 75.1403-2 -2 Criteria—Hoists transporting materials; brakes.
- 75.1403-3 -3 Criteria—Drum clutch; cage construction.
- 75.1403-4 -4 Criteria—Automatic elevators.
- 75.1403-5 -5 Criteria—Belt conveyors.
- 75.1403-6 -6 Criteria—Self-propelled personnel carriers.
- 75.1403-7 -7 Criteria—Mantrips.
- 75.1403-8 -8 Criteria—Track haulage roads.
- 75.1403-9 -9 Criteria—Shelter holes.
- 75.1404 Automatic brakes; speed reduction gear.
- 75.1404-1 -1 Braking system.
- 75.1405 Automatic couplers.
- 75.1405-1 -1 Automatic couplers, haulage equipment.
- 75.1429 Guide ropes.
- 75.1430 Wire ropes; scope.
- 75.1431 Minimum rope strength.
- 75.1432 Initial measurement.
- 75.1433 Examinations.
- 75.1434 Retirement criteria.
- 75.1435 Load end attachments.
- 75.1436 Drum end attachment.
- 75.1437 End attachment retermination.
- 75.1438 End attachment replacement.
- 75.150 Tests for methane and for oxygen deficiency; qualified person.
- 75.1500 [Reserved]
- 75.1501 Emergency evacuations.
- 75.1502 Mine emergency evacuation and firefighting program of instruction.
- 75.1503 Use of fire suppression equipment.
- 75.1504 Mine emergency evacuation training and drills.
- 75.1505 Escapeway maps.
- 75.1506 Refuge alternatives.
- 75.1507 Emergency Response Plan; refuge alternatives.
- 75.1508 Training and records for examination, maintenance and repair of refuge alternatives and components.
- 75.151 Tests for methane; qualified person; additional requirement.
- 75.152 Tests of air flow; qualified person.
- 75.153 Electrical work; qualified person.
- 75.154 Repair of energized surface high voltage lines; qualified person.
- 75.155 Qualified hoisting engineer; qualifications.
- 75.156 AMS operator, qualifications.
- 75.159 Records of certified and qualified persons.
- 75.160 Training programs.
- 75.1600 Communications.
- 75.1600-1 -1 Communication facilities; main portals; installation requirements.
- 75.1600-2 -2 Communication facilities; working sections; installation and maintenance requirements; audible or visual alarms.
- 75.1600-3 -3 Communications facilities; refuge alternatives.
- 75.161 Plans for training programs.
- 75.1700 Oil and gas wells.
- 75.1702 Smoking; prohibition.
- 75.1702-1 -1 Smoking programs.
- 75.1703 Portable electric lamps.
- 75.1703-1 -1 Permissible lamps.
- 75.1707-1 -1 New working section.
- 75.1708 Surface structures, fireproofing.
- 75.1708-1 -1 Surface structures; fireproof construction.
- 75.1709 Accumulations of methane and coal dust on surface coal-handling facilities.
- 75.1710 Canopies or cabs; diesel-powered and electric face equipment.
- 75.1710-1 -1 Canopies or cabs; self-propelled diesel-powered and electric face equipment; installation requirements.
- 75.1711 Sealing of mines.
- 75.1711-1 -1 Sealing of shaft openings.
- 75.1711-2 -2 Sealing of slope or drift openings.
- 75.1711-3 -3 Openings of active mines.
- 75.1712 Bath houses and toilet facilities.
- 75.1712-1 -1 Availability of surface bathing facilities; change rooms; and sanitary facilities.
- 75.1712-10 -10 Underground sanitary facilities; maintenance.
- 75.1712-2 -2 Location of surface facilities.
- 75.1712-3 -3 Minimum requirements of surface bathing facilities, change rooms, and sanitary toilet facilities.
- 75.1712-4 -4 Waiver of surface facilities requirements.
- 75.1712-5 -5 Application for waiver of surface facilities.
- 75.1712-6 -6 Underground sanitary facilities; installation and maintenance.
- 75.1712-7 -7 Underground sanitary facilities; waiver of requirements.
- 75.1712-8 -8 Application for waiver of location requirements for underground sanitary facilities.
- 75.1712-9 -9 Issuance of waivers.
- 75.1713 Emergency medical assistance; first-aid.
- 75.1713-1 -1 Arrangements for emergency medical assistance and transportation for injured persons; agreements; reporting requirements; posting requirements.
- 75.1713-2 -2 Emergency communications; requirements.
- 75.1713-3 -3 First-Aid training; supervisory employees.
- 75.1713-4 -4 First-aid training program; availability of instruction to all miners.
- 75.1713-5 -5 First-aid training program; retraining of supervisory employees; availability to all miners.
- 75.1713-6 -6 First-aid training program; minimum requirements.
- 75.1713-7 -7 First-aid equipment; location; minimum requirements.
- 75.1714 Availability of approved self-rescue devices; instruction in use and location.
- 75.1714-1 -1 Approved self-rescue devices.
- 75.1714-2 -2 Self-rescue devices; use and location requirements.
- 75.1714-3 -3 Self-rescue devices; inspection, testing, maintenance, repair, and recordkeeping.
- 75.1714-4 -4 Additional self-contained self-rescuers (SCSRs).
- 75.1714-5 -5 Map locations of self-contained self-rescuers (SCSR).
- 75.1714-6 -6 Emergency tethers.
- 75.1714-7 -7 Multi-gas detectors.
- 75.1714-8 -8 Reporting SCSR inventory and malfunctions; retention of SCSRs.
- 75.1715 Identification check system.
- 75.1716 Operations under water.
- 75.1716-1 -1 Operations under water; notification by operator.
- 75.1716-2 -2 Permit required.
- 75.1716-3 -3 Applications for permits.
- 75.1716-4 -4 Issuance of permits.
- 75.1717 Exemptions.
- 75.1718 Drinking water.
- 75.1718-1 -1 Drinking water; quality.
- 75.1719 Illumination; purpose and scope of §§ 75.1719 through 75.1719-4; time for compliance.
- 75.1719-1 -1 Illumination in working places.
- 75.1719-2 -2 Lighting fixtures; requirements.
- 75.1719-3 -3 Methods of measurement; light measuring instruments.
- 75.1719-4 -4 Mining machines, cap lamps; requirements.
- 75.1720 Protective clothing; requirements.
- 75.1720-1 -1 Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners.
- 75.1721 Opening of new underground coal mines, or reopening and reactivating of abandoned or deactivated coal mines, notification by the operator; requirements.
- 75.1722 Mechanical equipment guards.
- 75.1723 Stationary grinding machines; protective devices.
- 75.1724 Hand-held power tools; safety devices.
- 75.1725 Machinery and equipment; operation and maintenance.
- 75.1726 Performing work from a raised position; safeguards.
- 75.1727 Drive belts.
- 75.1728 Power-driven pulleys.
- 75.1729 Welding operations.
- 75.1730 Compressed air; general; compressed air systems.
- 75.1731 Maintenance of belt conveyors and belt conveyor entries.
- 75.1732 Proximity detection systems.
- 75.1900 Definitions.
- 75.1901 Diesel fuel requirements.
- 75.1902 Underground diesel fuel storage—general requirements.
- 75.1903 Underground diesel fuel storage facilities and areas; construction and safety precautions.
- 75.1904 Underground diesel fuel tanks and safety cans.
- 75.1905 Dispensing of diesel fuel.
- 75.1905-1 -1 Diesel fuel piping systems.
- 75.1906 Transport of diesel fuel.
- 75.1907 Diesel-powered equipment intended for use in underground coal mines.
- 75.1908 Nonpermissible diesel-powered equipment; categories.
- 75.1909 Nonpermissible diesel-powered equipment; design and performance requirements.
- 75.1910 Nonpermissible diesel-powered equipment; electrical system design and performance requirements.
- 75.1911 Fire suppression systems for diesel-powered equipment and fuel transportation units.
- 75.1912 Fire suppression systems for permanent underground diesel fuel storage facilities.
- 75.1913 Starting aids.
- 75.1914 Maintenance of diesel-powered equipment.
- 75.1915 Training and qualification of persons working on diesel-powered equipment.
- 75.1916 Operation of diesel-powered equipment.
- 75.2 Definitions.
- 75.200 Scope.
- 75.201 Definitions.
- 75.202 Protection from falls of roof, face and ribs.
- 75.203 Mining methods.
- 75.204 Roof bolting.
- 75.205 Installation of roof support using mining machines with integral roof bolters.
- 75.206 Conventional roof support.
- 75.207 Pillar recovery.
- 75.208 Warning devices.
- 75.209 Automated Temporary Roof Support (ATRS) systems.
- 75.210 Manual installation of temporary support.
- 75.211 Roof testing and scaling.
- 75.212 Rehabilitation of areas with unsupported roof.
- 75.213 Roof support removal.
- 75.214 Supplemental support materials, equipment and tools.
- 75.215 Longwall mining systems.
- 75.220 Roof control plan.
- 75.221 Roof control plan information.
- 75.222 Roof control plan-approval criteria.
- 75.223 Evaluation and revision of roof control plan.
- 75.300 Scope.
- 75.301 Definitions.
- 75.302 Main mine fans.
- 75.310 Installation of main mine fans.
- 75.311 Main mine fan operation.
- 75.312 Main mine fan examinations and records.
- 75.313 Main mine fan stoppage with persons underground.
- 75.320 Air quality detectors and measurement devices.
- 75.321 Air quality.
- 75.322 Harmful quantities of noxious gases.
- 75.323 Actions for excessive methane.
- 75.324 Intentional changes in the ventilation system.
- 75.325 Air quantity.
- 75.326 Mean entry air velocity.
- 75.327 Air courses and trolley haulage systems.
- 75.330 Face ventilation control devices.
- 75.331 Auxiliary fans and tubing.
- 75.332 Working sections and working places.
- 75.333 Ventilation controls.
- 75.334 Worked-out areas and areas where pillars are being recovered.
- 75.335 Seal strengths, design applications, and installation.
- 75.336 Sampling and monitoring requirements.
- 75.337 Construction and repair of seals.
- 75.338 Training.
- 75.339 Seals records.
- 75.340 Underground electrical installations.
- 75.341 Direct-fired intake air heaters.
- 75.342 Methane monitors.
- 75.343 Underground shops.
- 75.344 Compressors.
- 75.350 Belt air course ventilation.
- 75.351 Atmospheric monitoring systems.
- 75.352 Actions in response to AMS malfunction, alert, or alarm signals.
- 75.360 Preshift examination at fixed intervals.
- 75.361 Supplemental examination.
- 75.362 On-shift examination.
- 75.363 Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.
- 75.364 Weekly examination.
- 75.370 Mine ventilation plan; submission and approval.
- 75.371 Mine ventilation plan; contents.
- 75.372 Mine ventilation map.
- 75.373 Reopening mines.
- 75.380 Escapeways; bituminous and lignite mines.
- 75.381 Escapeways; anthracite mines.
- 75.382 Mechanical escape facilities.
- 75.384 Longwall and shortwall travelways.
- 75.385 Opening new mines.
- 75.386 Final mining of pillars.
- 75.388 Boreholes in advance of mining.
- 75.389 Mining into inaccessible areas.
- 75.400 Accumulation of combustible materials.
- 75.400-1 -1 Definitions.
- 75.400-2 -2 Cleanup program.
- 75.401 Abatement of dust; water or water with a wetting agent.
- 75.401-1 -1 Excessive amounts of dust.
- 75.402 Rock dusting.
- 75.402-1 -1 Definition.
- 75.402-2 -2 Exceptions.
- 75.403 Maintenance of incombustible content of rock dust.
- 75.403-1 -1 Incombustible content.
- 75.404 Exemption of anthracite mines.
- 75.500 Permissible electric equipment.
- 75.500-1 -1 Other low horsepower electric face equipment.
- 75.501 Permissible electric face equipment; coal seams above water table.
- 75.501-1 -1 Coal seams above the water table.
- 75.501-2 -2 Permissible electric face equipment.
- 75.501-3 -3 New openings; mines above water table and never classed gassy.
- 75.502 Permits for noncompliance.
- 75.503 Permissible electric face equipment; maintenance.
- 75.503-1 -1 Statement listing all electric face equipment.
- 75.504 Permissibility of new, replacement, used, reconditioned, additional, and rebuilt electric face equipment.
- 75.505 Mines classed gassy; use and maintenance of permissible electric face equipment.
- 75.506 Electric face equipment; requirements for permissibility.
- 75.506-1 -1 Electric face equipment; permissible condition; maintenance requirements.
- 75.507 Power connection points.
- 75.507-1 -1 Electric equipment other than power-connection points; outby the last open crosscut; return air; permissibility requirements.
- 75.508 Map of electrical system.
- 75.508-1 -1 Mine tracks.
- 75.508-2 -2 Changes in electric system map; recording.
- 75.509 Electric power circuit and electric equipment; deenergization.
- 75.510 Energized trolley wires; repair.
- 75.510-1 -1 Repair of energized trolley wires; training.
- 75.511 Low-, medium-, or high-voltage distribution circuits and equipment; repair.
- 75.511-1 -1 Qualified person.
- 75.512 Electric equipment; examination, testing and maintenance.
- 75.512-1 -1 Qualified person.
- 75.512-2 -2 Frequency of examinations.
- 75.513 Electric conductor; capacity and insulation.
- 75.513-1 -1 Electric conductor; size.
- 75.514 Electrical connections or splices; suitability.
- 75.515 Cable fittings; suitability.
- 75.516 Power wires; support.
- 75.516-1 -1 Installed insulators.
- 75.516-2 -2 Communication wires and cables; installation; insulation; support.
- 75.517 Power wires and cables; insulation and protection.
- 75.517-1 -1 Power wires and cables; insulation and protection.
- 75.517-2 -2 Plans for insulation of existing bare power wires and cables.
- 75.518 Electric equipment and circuits; overload and short circuit protection.
- 75.518-1 -1 Electric equipment and circuits; overload and short circuit protection; minimum requirements.
- 75.518-2 -2 Incandescent lamps, overload and short circuit protection.
- 75.519 Main power circuits; disconnecting switches.
- 75.519-1 -1 Main power circuits; disconnecting switches; locations.
- 75.520 Electric equipment; switches.
- 75.521 Lightning arresters; ungrounded and exposed power conductors and telephone wires.
- 75.522 Lighting devices.
- 75.522-1 -1 Incandescent and fluorescent lamps.
- 75.523 Electric face equipment; deenergization.
- 75.523-1 -1 Deenergization of self-propelled electric face equipment installation requirements.
- 75.523-2 -2 Deenergization of self-propelled electric face equipment; performance requirements.
- 75.523-3 -3 Automatic emergency-parking brakes.
- 75.524 Electric face equipment; electric equipment used in return air outby the last open crosscut; maximum level of alternating or direct electric current between frames of equipment.
- 75.600 Trailing cables; flame resistance.
- 75.600-1 -1 Approved cables; flame resistance.
- 75.601 Short circuit protection of trailing cables.
- 75.601-1 -1 Short circuit protection; ratings and settings of circuit breakers.
- 75.601-2 -2 Short circuit protection; use of fuses; approval by the Secretary.
- 75.601-3 -3 Short circuit protection; dual element fuses; current ratings; maximum values.
- 75.602 Trailing cable junctions.
- 75.603 Temporary splice of trailing cable.
- 75.604 Permanent splicing of trailing cables.
- 75.605 Clamping of trailing cables to equipment.
- 75.606 Protection of trailing cables.
- 75.607 Breaking trailing cable and power cable connections.
- 75.700 Grounding metallic sheaths, armors, and conduits enclosing power conductors.
- 75.700-1 -1 Approved methods of grounding.
- 75.701 Grounding metallic frames, casings, and other enclosures of electric equipment.
- 75.701-1 -1 Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.
- 75.701-2 -2 Approved method of grounding metallic frames, casings and other enclosures receiving power from single-phase 110-220-volt circuit.
- 75.701-3 -3 Approved methods of grounding metallic frames, casings and other enclosures of electric equipment receiving power from direct current power systems with one polarity grounded.
- 75.701-4 -4 Grounding wires; capacity of wires.
- 75.701-5 -5 Use of grounding connectors.
- 75.702 Protection other than grounding.
- 75.702-1 -1 Protection other than grounding; approved by an authorized representative of the Secretary.
- 75.703 Grounding offtrack direct-current machines and the enclosures of related detached components.
- 75.703-1 -1 Approved method of grounding.
- 75.703-2 -2 Approved grounding mediums.
- 75.703-3 -3 Approved methods of grounding offtrack mobile, portable and stationary direct-current machines.
- 75.703-4 -4 Other methods of protecting offtrack direct-current equipment; approved by an authorized representative of the Secretary.
- 75.704 Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
- 75.704-1 -1 Approved methods of grounding.
- 75.705 Work on high-voltage lines; deenergizing and grounding.
- 75.705-1 -1 Work on high-voltage lines.
- 75.705-10 -10 Tying into energized high-voltage surface circuits.
- 75.705-11 -11 Use of grounded messenger wires; ungrounded systems.
- 75.705-2 -2 Repairs to energized surface high-voltage lines.
- 75.705-3 -3 Work on energized high-voltage surface lines; reporting.
- 75.705-4 -4 Simultaneous repairs.
- 75.705-5 -5 Installation of protective equipment.
- 75.705-6 -6 Protective clothing; use and inspection.
- 75.705-7 -7 Protective equipment; inspection.
- 75.705-8 -8 Protective equipment; testing and storage.
- 75.705-9 -9 Operating disconnecting or cutout switches.
- 75.706 Deenergized underground power circuits; idle days—idle shifts.
- 75.800 High-voltage circuits; circuit breakers.
- 75.800-1 -1 Circuit breakers; location.
- 75.800-2 -2 Approved circuit schemes.
- 75.800-3 -3 Testing, examination and maintenance of circuit breakers; procedures.
- 75.800-4 -4 Testing, examination, and maintenance of circuit breakers; record.
- 75.801 Grounding resistors.
- 75.802 Protection of high-voltage circuits extending underground.
- 75.803 Fail safe ground check circuits on high-voltage resistance grounded systems.
- 75.803-1 -1 Maximum voltage ground check circuits.
- 75.803-2 -2 Ground check systems not employing pilot check wires; approval by the Secretary.
- 75.804 Underground high-voltage cables.
- 75.805 Couplers.
- 75.806 Connection of single-phase loads.
- 75.807 Installation of high-voltage transmission cables.
- 75.808 Disconnecting devices.
- 75.809 Identification of circuit breakers and disconnecting switches.
- 75.810 High-voltage trailing cables; splices.
- 75.811 High-voltage underground equipment; grounding.
- 75.812 Movement of high-voltage power centers and portable transformers; permit.
- 75.812-1 -1 Qualified person.
- 75.812-2 -2 High-voltage power centers and transformers; record of examination.
- 75.813 High-voltage longwalls; scope.
- 75.814 Electrical protection.
- 75.815 Disconnect devices.
- 75.816 Guarding of cables.
- 75.817 Cable handling and support systems.
- 75.818 Use of insulated cable handling equipment.
- 75.819 Motor-starter enclosures; barriers and interlocks.
- 75.820 Electrical work; troubleshooting and testing.
- 75.821 Testing, examination and maintenance.
- 75.822 Underground high-voltage longwall cables.
- 75.823 Scope.
- 75.824 Electrical protection.
- 75.825 Power centers.
- 75.826 High-voltage trailing cables.
- 75.827 Guarding of trailing cables.
- 75.828 Trailing cable pulling.
- 75.829 Tramming continuous mining machines in and out of the mine and from section to section.
- 75.830 Splicing and repair of trailing cables.
- 75.831 Electrical work; troubleshooting and testing.
- 75.832 Frequency of examinations; recordkeeping.
- 75.833 Handling high-voltage trailing cables.
- 75.834 Training.
- 75.900 Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers.
- 75.900-1 -1 Circuit breakers; location.
- 75.900-2 -2 Approved circuit schemes.
- 75.900-3 -3 Testing, examination, and maintenance of circuit breakers; procedures.
- 75.900-4 -4 Testing, examination, and maintenance of circuit breakers; record.
- 75.901 Protection of low- and medium-voltage three-phase circuits used underground.
- 75.902 Low- and medium-voltage ground check monitor circuits.
- 75.902-1 -1 Maximum voltage ground check circuits.
- 75.902-2 -2 Approved ground check systems not employing pilot check wires.
- 75.902-4 -4 Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
- 75.903 Disconnecting devices.
- 75.904 Identification of circuit breakers.
- 75.905 Connection of single-phase loads.
- 75.906 Trailing cables for mobile equipment, ground wires, and ground check wires.
- 75.907 Design of trailing cables for medium-voltage circuits.
Contents
3,175 provisions, too many to show on one page. Open a part or section to read it with its history and connections, or search inside the text.
- 75.1 · Scope.
- 75.100 · Certified person.
- 75.1000 · Cutout switches.
- 75.1001 · Overcurrent protection.
- 75.1001-1 · -1 Devices for overcurrent protection; testing and calibration requirements; records.
- 75.1002 · Installation of electric equipment and conductors; permissibility.
- 75.1003 · Insulation of trolley wires, trolley feeder wires and bare signal wires; guarding of trolley wires and trolley feeder wires.
- 75.1003-1 · -1 Other requirements for guarding of trolley wires and trolley feeder wires.
- 75.1003-2 · -2 Requirements for movement of off-track mining equipment in areas of active workings where energized trolley wires or trolley feeder wires are present; pre-movement requirements; certified and qualified persons.
- 75.1100 · Requirements.
- 75.1100-1 · -1 Type and quality of firefighting equipment.
- 75.1100-2 · -2 Quantity and location of firefighting equipment.
- 75.1100-3 · -3 Condition and examination of firefighting equipment.
- 75.1101 · Deluge-type water sprays, foam generators; main and secondary belt-conveyor drives.
- 75.1101-1 · -1 Deluge-type water spray systems.
- 75.1101-10 · -10 Water sprinkler systems; fire warning devices at belt drives.
- 75.1101-11 · -11 Inspection of water sprinkler systems.
- 75.1101-12 · -12 Equivalent dry-pipe system.
- 75.1101-13 · -13 Dry powder chemical systems; general.
- 75.1101-14 · -14 Installation of dry powder chemical systems.
- 75.1101-15 · -15 Construction of dry powder chemical systems.
- 75.1101-16 · -16 Dry powder chemical systems; sensing and fire-suppression devices.
- 75.1101-17 · -17 Sealing of dry powder chemical systems.
- 75.1101-18 · -18 Dry powder requirements.
- 75.1101-19 · -19 Nozzles; flow rate and direction.
- 75.1101-2 · -2 Installation of deluge-type sprays.
- 75.1101-20 · -20 Safeguards for dry powder chemical systems.
- 75.1101-21 · -21 Back-up water system.
- 75.1101-22 · -22 Inspection of dry powder chemical systems.
- 75.1101-3 · -3 Water requirements.
- 75.1101-4 · -4 Branch lines.
- 75.1101-5 · -5 Installation of foam generator systems.
- 75.1101-6 · -6 Water sprinkler systems; general.
- 75.1101-7 · -7 Installation of water sprinkler systems; requirements.
- 75.1101-8 · -8 Water sprinkler systems; arrangement of sprinklers.
- 75.1101-9 · -9 Back-up water system.
- 75.1102 · Slippage and sequence switches.
- 75.1103 · Automatic fire warning devices.
- 75.1103-1 · -1 Automatic fire sensors.
- 75.1103-10 · -10 Fire suppression systems; additional requirements.
- 75.1103-11 · -11 Tests of fire hydrants and fire hose; record of tests.
- 75.1103-2 · -2 Automatic fire sensors; approved components; installation requirements.
- 75.1103-3 · -3 Automatic fire sensor and warning device systems; minimum requirements; general.
- 75.1103-4 · -4 Automatic fire sensor and warning device systems; installation; minimum requirements.
- 75.1103-5 · -5 Automatic fire warning devices; actions and response.
- 75.1103-6 · -6 Automatic fire sensors; actuation of fire suppression systems.
- 75.1103-7 · -7 Electrical components; permissibility requirements.
- 75.1103-8 · -8 Automatic fire sensor and warning device systems; examination and test requirements.
- 75.1103-9 · -9 Minimum requirements; fire suppression materials and location; maintenance of entries and crosscuts; access doors; communications; fire crews; high-expansion foam devices.
- 75.1104 · Underground storage, lubricating oil and grease.
- 75.1106 · Welding, cutting, or soldering with arc or flame underground.
- 75.1106-1 · -1 Test for methane.
- 75.1106-2 · -2 Transportation of liquefied and nonliquefied compressed gas cylinders; requirements.
- 75.1106-3 · -3 Storage of liquefied and nonliquefied compressed gas cylinders; requirements.
- 75.1106-4 · -4 Use of liquefied and nonliquefied compressed gas cylinders; general requirements.
- 75.1106-5 · -5 Maintenance and tests of liquefied and nonliquefied compressed gas cylinders; accessories and equipment; requirements.
- 75.1106-6 · -6 Exemption of small low pressure gas cylinders containing nonflammable or nonexplosive gas mixtures.
- 75.1107 · Fire suppression devices.
- 75.1107-1 · -1 Fire-resistant hydraulic fluids and fire suppression devices on underground equipment.
- 75.1107-10 · -10 High expansion foam devices; minimum capacity.
- 75.1107-11 · -11 Extinguishing agents; requirements on mining equipment employed in low coal.
- 75.1107-12 · -12 Inerting of mine atmosphere prohibited.
- 75.1107-13 · -13 Approval of other fire suppression devices.
- 75.1107-14 · -14 Guards and handrails; requirements where fire suppression devices are employed.
- 75.1107-15 · -15 Fire suppression devices; hazards; training of miners.
- 75.1107-16 · -16 Inspection of fire suppression devices.
- 75.1107-17 · -17 Incorporation by reference; availability of publications.
- 75.1107-2 · -2 Approved fire-resistant hydraulic fluids; minimum requirements.
- 75.1107-3 · -3 Fire suppression devices; approved components; installation requirements.
- 75.1107-4 · -4 Automatic fire sensors and manual actuators; installation; minimum requirements.
- 75.1107-5 · -5 Electrical components of fire suppression devices; permissibility requirements.
- 75.1107-6 · -6 Capacity of fire suppression devices; location and direction of nozzles.
- 75.1107-7 · -7 Water spray devices; capacity; water supply; minimum requirements.
- 75.1107-8 · -8 Fire suppression devices; extinguishant supply systems.
- 75.1107-9 · -9 Dry chemical devices; capacity; minimum requirements.
- 75.1108 · Approved conveyor belts.
- 75.1200 · Mine map.
- 75.1200-1 · -1 Additional information on mine map.
- 75.1200-2 · -2 Accuracy and scale of mine maps.
- 75.1201 · Certification.
- 75.1202 · Temporary notations, revisions, and supplements.
- 75.1202-1 · -1 Temporary notations, revisions, and supplements.
- 75.1203 · Availability of mine map.
- 75.1204 · Mine closure; filing of map with Secretary.
- 75.1204-1 · -1 Places to give notice and file maps.
- 75.1300 · Definitions.
- 75.1301 · Qualified person.
- 75.1310 · Explosives and blasting equipment.
- 75.1311 · Transporting explosives and detonators.
- 75.1312 · Explosives and detonators in underground magazines.
- 75.1313 · Explosives and detonators outside of magazines.
- 75.1314 · Sheathed explosive units.
- 75.1315 · Boreholes for explosives.
- 75.1316 · Preparation before blasting.
- 75.1317 · Primer cartridges.
- 75.1318 · Loading boreholes.
- 75.1319 · Weight of explosives permitted in boreholes in bituminous and lignite mines.
- 75.1320 · Multiple-shot blasting.
- 75.1321 · Permits for firing more than 20 boreholes and for use of nonpermissible blasting units.
- 75.1322 · Stemming boreholes.
- 75.1323 · Blasting circuits.
- 75.1324 · Methane concentration and tests.
- 75.1325 · Firing procedures.
- 75.1326 · Examination after blasting.
- 75.1327 · Misfires.
- 75.1328 · Damaged or deteriorated explosives and detonators.
- 75.1400 · Hoisting equipment; general.
- 75.1400-1 · -1 Hoists; brakes, capability.
- 75.1400-2 · -2 Hoists; tests of safety catches; records.
- 75.1400-3 · -3 Daily examination of hoisting equipment.
- 75.1400-4 · -4 Certifications and records of daily examinations.
- 75.1401 · Hoists; rated capacities; indicators.
- 75.1401-1 · -1 Hoists; indicators.
- 75.1402 · Communication between shaft stations and hoist room.
- 75.1402-1 · -1 Communication between shaft stations and hoist room.
- 75.1402-2 · -2 Tests of signaling systems.
- 75.1403 · Other safeguards.
- 75.1403-1 · -1 General criteria.
- 75.1403-10 · -10 Criteria—Haulage; general.
- 75.1403-11 · -11 Criteria—Entrances to shafts and slopes.
- 75.1403-2 · -2 Criteria—Hoists transporting materials; brakes.
- 75.1403-3 · -3 Criteria—Drum clutch; cage construction.
- 75.1403-4 · -4 Criteria—Automatic elevators.
- 75.1403-5 · -5 Criteria—Belt conveyors.
- 75.1403-6 · -6 Criteria—Self-propelled personnel carriers.
- 75.1403-7 · -7 Criteria—Mantrips.
- 75.1403-8 · -8 Criteria—Track haulage roads.
- 75.1403-9 · -9 Criteria—Shelter holes.
- 75.1404 · Automatic brakes; speed reduction gear.
- 75.1404-1 · -1 Braking system.
- 75.1405 · Automatic couplers.
- 75.1405-1 · -1 Automatic couplers, haulage equipment.
- 75.1429 · Guide ropes.
- 75.1430 · Wire ropes; scope.
- 75.1431 · Minimum rope strength.
- 75.1432 · Initial measurement.
- 75.1433 · Examinations.
- 75.1434 · Retirement criteria.
- 75.1435 · Load end attachments.
- 75.1436 · Drum end attachment.
- 75.1437 · End attachment retermination.
- 75.1438 · End attachment replacement.
- 75.150 · Tests for methane and for oxygen deficiency; qualified person.
- 75.1500 · [Reserved]
- 75.1501 · Emergency evacuations.
- 75.1502 · Mine emergency evacuation and firefighting program of instruction.
- 75.1503 · Use of fire suppression equipment.
- 75.1504 · Mine emergency evacuation training and drills.
- 75.1505 · Escapeway maps.
- 75.1506 · Refuge alternatives.
- 75.1507 · Emergency Response Plan; refuge alternatives.
- 75.1508 · Training and records for examination, maintenance and repair of refuge alternatives and components.
- 75.151 · Tests for methane; qualified person; additional requirement.
- 75.152 · Tests of air flow; qualified person.
- 75.153 · Electrical work; qualified person.
- 75.154 · Repair of energized surface high voltage lines; qualified person.
- 75.155 · Qualified hoisting engineer; qualifications.
- 75.156 · AMS operator, qualifications.
- 75.159 · Records of certified and qualified persons.
- 75.160 · Training programs.
- 75.1600 · Communications.
- 75.1600-1 · -1 Communication facilities; main portals; installation requirements.
- 75.1600-2 · -2 Communication facilities; working sections; installation and maintenance requirements; audible or visual alarms.
- 75.1600-3 · -3 Communications facilities; refuge alternatives.
- 75.161 · Plans for training programs.
- 75.1700 · Oil and gas wells.
- 75.1702 · Smoking; prohibition.
- 75.1702-1 · -1 Smoking programs.
- 75.1703 · Portable electric lamps.
- 75.1703-1 · -1 Permissible lamps.
- 75.1707-1 · -1 New working section.
- 75.1708 · Surface structures, fireproofing.
- 75.1708-1 · -1 Surface structures; fireproof construction.
- 75.1709 · Accumulations of methane and coal dust on surface coal-handling facilities.
- 75.1710 · Canopies or cabs; diesel-powered and electric face equipment.
- 75.1710-1 · -1 Canopies or cabs; self-propelled diesel-powered and electric face equipment; installation requirements.
- 75.1711 · Sealing of mines.
- 75.1711-1 · -1 Sealing of shaft openings.
- 75.1711-2 · -2 Sealing of slope or drift openings.
- 75.1711-3 · -3 Openings of active mines.
- 75.1712 · Bath houses and toilet facilities.
- 75.1712-1 · -1 Availability of surface bathing facilities; change rooms; and sanitary facilities.
- 75.1712-10 · -10 Underground sanitary facilities; maintenance.
- 75.1712-2 · -2 Location of surface facilities.
- 75.1712-3 · -3 Minimum requirements of surface bathing facilities, change rooms, and sanitary toilet facilities.
- 75.1712-4 · -4 Waiver of surface facilities requirements.
- 75.1712-5 · -5 Application for waiver of surface facilities.
- 75.1712-6 · -6 Underground sanitary facilities; installation and maintenance.
- 75.1712-7 · -7 Underground sanitary facilities; waiver of requirements.
- 75.1712-8 · -8 Application for waiver of location requirements for underground sanitary facilities.
- 75.1712-9 · -9 Issuance of waivers.
- 75.1713 · Emergency medical assistance; first-aid.
- 75.1713-1 · -1 Arrangements for emergency medical assistance and transportation for injured persons; agreements; reporting requirements; posting requirements.
- 75.1713-2 · -2 Emergency communications; requirements.
- 75.1713-3 · -3 First-Aid training; supervisory employees.
- 75.1713-4 · -4 First-aid training program; availability of instruction to all miners.
- 75.1713-5 · -5 First-aid training program; retraining of supervisory employees; availability to all miners.
- 75.1713-6 · -6 First-aid training program; minimum requirements.
- 75.1713-7 · -7 First-aid equipment; location; minimum requirements.
- 75.1714 · Availability of approved self-rescue devices; instruction in use and location.
- 75.1714-1 · -1 Approved self-rescue devices.
- 75.1714-2 · -2 Self-rescue devices; use and location requirements.
- 75.1714-3 · -3 Self-rescue devices; inspection, testing, maintenance, repair, and recordkeeping.
- 75.1714-4 · -4 Additional self-contained self-rescuers (SCSRs).
- 75.1714-5 · -5 Map locations of self-contained self-rescuers (SCSR).
- 75.1714-6 · -6 Emergency tethers.
- 75.1714-7 · -7 Multi-gas detectors.
- 75.1714-8 · -8 Reporting SCSR inventory and malfunctions; retention of SCSRs.
- 75.1715 · Identification check system.
- 75.1716 · Operations under water.
- 75.1716-1 · -1 Operations under water; notification by operator.
- 75.1716-2 · -2 Permit required.
- 75.1716-3 · -3 Applications for permits.
- 75.1716-4 · -4 Issuance of permits.
- 75.1717 · Exemptions.
- 75.1718 · Drinking water.
- 75.1718-1 · -1 Drinking water; quality.
- 75.1719 · Illumination; purpose and scope of §§ 75.1719 through 75.1719-4; time for compliance.
- 75.1719-1 · -1 Illumination in working places.
- 75.1719-2 · -2 Lighting fixtures; requirements.
- 75.1719-3 · -3 Methods of measurement; light measuring instruments.
- 75.1719-4 · -4 Mining machines, cap lamps; requirements.
- 75.1720 · Protective clothing; requirements.
- 75.1720-1 · -1 Distinctively colored hard hats, or hard caps; identification for newly employed, inexperienced miners.
- 75.1721 · Opening of new underground coal mines, or reopening and reactivating of abandoned or deactivated coal mines, notification by the operator; requirements.
- 75.1722 · Mechanical equipment guards.
- 75.1723 · Stationary grinding machines; protective devices.
- 75.1724 · Hand-held power tools; safety devices.
- 75.1725 · Machinery and equipment; operation and maintenance.
- 75.1726 · Performing work from a raised position; safeguards.
- 75.1727 · Drive belts.
- 75.1728 · Power-driven pulleys.
- 75.1729 · Welding operations.
- 75.1730 · Compressed air; general; compressed air systems.
- 75.1731 · Maintenance of belt conveyors and belt conveyor entries.
- 75.1732 · Proximity detection systems.
- 75.1900 · Definitions.
- 75.1901 · Diesel fuel requirements.
- 75.1902 · Underground diesel fuel storage—general requirements.
- 75.1903 · Underground diesel fuel storage facilities and areas; construction and safety precautions.
- 75.1904 · Underground diesel fuel tanks and safety cans.
- 75.1905 · Dispensing of diesel fuel.
- 75.1905-1 · -1 Diesel fuel piping systems.
- 75.1906 · Transport of diesel fuel.
- 75.1907 · Diesel-powered equipment intended for use in underground coal mines.
- 75.1908 · Nonpermissible diesel-powered equipment; categories.
- 75.1909 · Nonpermissible diesel-powered equipment; design and performance requirements.
- 75.1910 · Nonpermissible diesel-powered equipment; electrical system design and performance requirements.
- 75.1911 · Fire suppression systems for diesel-powered equipment and fuel transportation units.
- 75.1912 · Fire suppression systems for permanent underground diesel fuel storage facilities.
- 75.1913 · Starting aids.
- 75.1914 · Maintenance of diesel-powered equipment.
- 75.1915 · Training and qualification of persons working on diesel-powered equipment.
- 75.1916 · Operation of diesel-powered equipment.
- 75.2 · Definitions.
- 75.200 · Scope.
- 75.201 · Definitions.
- 75.202 · Protection from falls of roof, face and ribs.
- 75.203 · Mining methods.
- 75.204 · Roof bolting.
- 75.205 · Installation of roof support using mining machines with integral roof bolters.
- 75.206 · Conventional roof support.
- 75.207 · Pillar recovery.
- 75.208 · Warning devices.
- 75.209 · Automated Temporary Roof Support (ATRS) systems.
- 75.210 · Manual installation of temporary support.
- 75.211 · Roof testing and scaling.
- 75.212 · Rehabilitation of areas with unsupported roof.
- 75.213 · Roof support removal.
- 75.214 · Supplemental support materials, equipment and tools.
- 75.215 · Longwall mining systems.
- 75.220 · Roof control plan.
- 75.221 · Roof control plan information.
- 75.222 · Roof control plan-approval criteria.
- 75.223 · Evaluation and revision of roof control plan.
- 75.300 · Scope.
- 75.301 · Definitions.
- 75.302 · Main mine fans.
- 75.310 · Installation of main mine fans.
- 75.311 · Main mine fan operation.
- 75.312 · Main mine fan examinations and records.
- 75.313 · Main mine fan stoppage with persons underground.
- 75.320 · Air quality detectors and measurement devices.
- 75.321 · Air quality.
- 75.322 · Harmful quantities of noxious gases.
- 75.323 · Actions for excessive methane.
- 75.324 · Intentional changes in the ventilation system.
- 75.325 · Air quantity.
- 75.326 · Mean entry air velocity.
- 75.327 · Air courses and trolley haulage systems.
- 75.330 · Face ventilation control devices.
- 75.331 · Auxiliary fans and tubing.
- 75.332 · Working sections and working places.
- 75.333 · Ventilation controls.
- 75.334 · Worked-out areas and areas where pillars are being recovered.
- 75.335 · Seal strengths, design applications, and installation.
- 75.336 · Sampling and monitoring requirements.
- 75.337 · Construction and repair of seals.
- 75.338 · Training.
- 75.339 · Seals records.
- 75.340 · Underground electrical installations.
- 75.341 · Direct-fired intake air heaters.
- 75.342 · Methane monitors.
- 75.343 · Underground shops.
- 75.344 · Compressors.
- 75.350 · Belt air course ventilation.
- 75.351 · Atmospheric monitoring systems.
- 75.352 · Actions in response to AMS malfunction, alert, or alarm signals.
- 75.360 · Preshift examination at fixed intervals.
- 75.361 · Supplemental examination.
- 75.362 · On-shift examination.
- 75.363 · Hazardous conditions and violations of mandatory health or safety standards; posting, correcting, and recording.
- 75.364 · Weekly examination.
- 75.370 · Mine ventilation plan; submission and approval.
- 75.371 · Mine ventilation plan; contents.
- 75.372 · Mine ventilation map.
- 75.373 · Reopening mines.
- 75.380 · Escapeways; bituminous and lignite mines.
- 75.381 · Escapeways; anthracite mines.
- 75.382 · Mechanical escape facilities.
- 75.384 · Longwall and shortwall travelways.
- 75.385 · Opening new mines.
- 75.386 · Final mining of pillars.
- 75.388 · Boreholes in advance of mining.
- 75.389 · Mining into inaccessible areas.
- 75.400 · Accumulation of combustible materials.
- 75.400-1 · -1 Definitions.
- 75.400-2 · -2 Cleanup program.
- 75.401 · Abatement of dust; water or water with a wetting agent.
- 75.401-1 · -1 Excessive amounts of dust.
- 75.402 · Rock dusting.
- 75.402-1 · -1 Definition.
- 75.402-2 · -2 Exceptions.
- 75.403 · Maintenance of incombustible content of rock dust.
- 75.403-1 · -1 Incombustible content.
- 75.404 · Exemption of anthracite mines.
- 75.500 · Permissible electric equipment.
- 75.500-1 · -1 Other low horsepower electric face equipment.
- 75.501 · Permissible electric face equipment; coal seams above water table.
- 75.501-1 · -1 Coal seams above the water table.
- 75.501-2 · -2 Permissible electric face equipment.
- 75.501-3 · -3 New openings; mines above water table and never classed gassy.
- 75.502 · Permits for noncompliance.
- 75.503 · Permissible electric face equipment; maintenance.
- 75.503-1 · -1 Statement listing all electric face equipment.
- 75.504 · Permissibility of new, replacement, used, reconditioned, additional, and rebuilt electric face equipment.
- 75.505 · Mines classed gassy; use and maintenance of permissible electric face equipment.
- 75.506 · Electric face equipment; requirements for permissibility.
- 75.506-1 · -1 Electric face equipment; permissible condition; maintenance requirements.
- 75.507 · Power connection points.
- 75.507-1 · -1 Electric equipment other than power-connection points; outby the last open crosscut; return air; permissibility requirements.
- 75.508 · Map of electrical system.
- 75.508-1 · -1 Mine tracks.
- 75.508-2 · -2 Changes in electric system map; recording.
- 75.509 · Electric power circuit and electric equipment; deenergization.
- 75.510 · Energized trolley wires; repair.
- 75.510-1 · -1 Repair of energized trolley wires; training.
- 75.511 · Low-, medium-, or high-voltage distribution circuits and equipment; repair.
- 75.511-1 · -1 Qualified person.
- 75.512 · Electric equipment; examination, testing and maintenance.
- 75.512-1 · -1 Qualified person.
- 75.512-2 · -2 Frequency of examinations.
- 75.513 · Electric conductor; capacity and insulation.
- 75.513-1 · -1 Electric conductor; size.
- 75.514 · Electrical connections or splices; suitability.
- 75.515 · Cable fittings; suitability.
- 75.516 · Power wires; support.
- 75.516-1 · -1 Installed insulators.
- 75.516-2 · -2 Communication wires and cables; installation; insulation; support.
- 75.517 · Power wires and cables; insulation and protection.
- 75.517-1 · -1 Power wires and cables; insulation and protection.
- 75.517-2 · -2 Plans for insulation of existing bare power wires and cables.
- 75.518 · Electric equipment and circuits; overload and short circuit protection.
- 75.518-1 · -1 Electric equipment and circuits; overload and short circuit protection; minimum requirements.
- 75.518-2 · -2 Incandescent lamps, overload and short circuit protection.
- 75.519 · Main power circuits; disconnecting switches.
- 75.519-1 · -1 Main power circuits; disconnecting switches; locations.
- 75.520 · Electric equipment; switches.
- 75.521 · Lightning arresters; ungrounded and exposed power conductors and telephone wires.
- 75.522 · Lighting devices.
- 75.522-1 · -1 Incandescent and fluorescent lamps.
- 75.523 · Electric face equipment; deenergization.
- 75.523-1 · -1 Deenergization of self-propelled electric face equipment installation requirements.
- 75.523-2 · -2 Deenergization of self-propelled electric face equipment; performance requirements.
- 75.523-3 · -3 Automatic emergency-parking brakes.
- 75.524 · Electric face equipment; electric equipment used in return air outby the last open crosscut; maximum level of alternating or direct electric current between frames of equipment.
- 75.600 · Trailing cables; flame resistance.
- 75.600-1 · -1 Approved cables; flame resistance.
- 75.601 · Short circuit protection of trailing cables.
- 75.601-1 · -1 Short circuit protection; ratings and settings of circuit breakers.
- 75.601-2 · -2 Short circuit protection; use of fuses; approval by the Secretary.
- 75.601-3 · -3 Short circuit protection; dual element fuses; current ratings; maximum values.
- 75.602 · Trailing cable junctions.
- 75.603 · Temporary splice of trailing cable.
- 75.604 · Permanent splicing of trailing cables.
- 75.605 · Clamping of trailing cables to equipment.
- 75.606 · Protection of trailing cables.
- 75.607 · Breaking trailing cable and power cable connections.
- 75.700 · Grounding metallic sheaths, armors, and conduits enclosing power conductors.
- 75.700-1 · -1 Approved methods of grounding.
- 75.701 · Grounding metallic frames, casings, and other enclosures of electric equipment.
- 75.701-1 · -1 Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.
- 75.701-2 · -2 Approved method of grounding metallic frames, casings and other enclosures receiving power from single-phase 110-220-volt circuit.
- 75.701-3 · -3 Approved methods of grounding metallic frames, casings and other enclosures of electric equipment receiving power from direct current power systems with one polarity grounded.
- 75.701-4 · -4 Grounding wires; capacity of wires.
- 75.701-5 · -5 Use of grounding connectors.
- 75.702 · Protection other than grounding.
- 75.702-1 · -1 Protection other than grounding; approved by an authorized representative of the Secretary.
- 75.703 · Grounding offtrack direct-current machines and the enclosures of related detached components.
- 75.703-1 · -1 Approved method of grounding.
- 75.703-2 · -2 Approved grounding mediums.
- 75.703-3 · -3 Approved methods of grounding offtrack mobile, portable and stationary direct-current machines.
- 75.703-4 · -4 Other methods of protecting offtrack direct-current equipment; approved by an authorized representative of the Secretary.
- 75.704 · Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
- 75.704-1 · -1 Approved methods of grounding.
- 75.705 · Work on high-voltage lines; deenergizing and grounding.
- 75.705-1 · -1 Work on high-voltage lines.
- 75.705-10 · -10 Tying into energized high-voltage surface circuits.
- 75.705-11 · -11 Use of grounded messenger wires; ungrounded systems.
- 75.705-2 · -2 Repairs to energized surface high-voltage lines.
- 75.705-3 · -3 Work on energized high-voltage surface lines; reporting.
- 75.705-4 · -4 Simultaneous repairs.
- 75.705-5 · -5 Installation of protective equipment.
- 75.705-6 · -6 Protective clothing; use and inspection.
- 75.705-7 · -7 Protective equipment; inspection.
- 75.705-8 · -8 Protective equipment; testing and storage.
- 75.705-9 · -9 Operating disconnecting or cutout switches.
- 75.706 · Deenergized underground power circuits; idle days—idle shifts.
- 75.800 · High-voltage circuits; circuit breakers.
- 75.800-1 · -1 Circuit breakers; location.
- 75.800-2 · -2 Approved circuit schemes.
- 75.800-3 · -3 Testing, examination and maintenance of circuit breakers; procedures.
- 75.800-4 · -4 Testing, examination, and maintenance of circuit breakers; record.
- 75.801 · Grounding resistors.
- 75.802 · Protection of high-voltage circuits extending underground.
- 75.803 · Fail safe ground check circuits on high-voltage resistance grounded systems.
- 75.803-1 · -1 Maximum voltage ground check circuits.
- 75.803-2 · -2 Ground check systems not employing pilot check wires; approval by the Secretary.
- 75.804 · Underground high-voltage cables.
- 75.805 · Couplers.
- 75.806 · Connection of single-phase loads.
- 75.807 · Installation of high-voltage transmission cables.
- 75.808 · Disconnecting devices.
- 75.809 · Identification of circuit breakers and disconnecting switches.
- 75.810 · High-voltage trailing cables; splices.
- 75.811 · High-voltage underground equipment; grounding.
- 75.812 · Movement of high-voltage power centers and portable transformers; permit.
- 75.812-1 · -1 Qualified person.
- 75.812-2 · -2 High-voltage power centers and transformers; record of examination.
- 75.813 · High-voltage longwalls; scope.
- 75.814 · Electrical protection.
- 75.815 · Disconnect devices.
- 75.816 · Guarding of cables.
- 75.817 · Cable handling and support systems.
- 75.818 · Use of insulated cable handling equipment.
- 75.819 · Motor-starter enclosures; barriers and interlocks.
- 75.820 · Electrical work; troubleshooting and testing.
- 75.821 · Testing, examination and maintenance.
- 75.822 · Underground high-voltage longwall cables.
- 75.823 · Scope.
- 75.824 · Electrical protection.
- 75.825 · Power centers.
- 75.826 · High-voltage trailing cables.
- 75.827 · Guarding of trailing cables.
- 75.828 · Trailing cable pulling.
- 75.829 · Tramming continuous mining machines in and out of the mine and from section to section.
- 75.830 · Splicing and repair of trailing cables.
- 75.831 · Electrical work; troubleshooting and testing.
- 75.832 · Frequency of examinations; recordkeeping.
- 75.833 · Handling high-voltage trailing cables.
- 75.834 · Training.
- 75.900 · Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers.
- 75.900-1 · -1 Circuit breakers; location.
- 75.900-2 · -2 Approved circuit schemes.
- 75.900-3 · -3 Testing, examination, and maintenance of circuit breakers; procedures.
- 75.900-4 · -4 Testing, examination, and maintenance of circuit breakers; record.
- 75.901 · Protection of low- and medium-voltage three-phase circuits used underground.
- 75.902 · Low- and medium-voltage ground check monitor circuits.
- 75.902-1 · -1 Maximum voltage ground check circuits.
- 75.902-2 · -2 Approved ground check systems not employing pilot check wires.
- 75.902-4 · -4 Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
- 75.903 · Disconnecting devices.
- 75.904 · Identification of circuit breakers.
- 75.905 · Connection of single-phase loads.
- 75.906 · Trailing cables for mobile equipment, ground wires, and ground check wires.
- 75.907 · Design of trailing cables for medium-voltage circuits.
United States Government work; public domain under 17 U.S.C. § 105.