| 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.
|
| 75.361 | Supplemental examination.
|
| 75.362 | On-shift examination.
|
| 75.363 | Hazardous conditions; 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. |
| 75.500 | Permissible electric equipment.
|
| 75.500-1 | Other low horsepower electric face equipment.
|
| 75.501 | Permissible electric face equipment; coal seams above water table.
|
| 75.501-1 | Coal seams above the water table.
|
| 75.501-2 | Permissible electric face equipment.
|
| 75.501-3 | New openings; mines above watertable and never classed gassy.
|
| 75.502 | Permits for noncompliance.
|
| 75.503 | Permissible electric face equipment; maintenance.
|
| 75.503-1 | 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 | Electric face equipment; permissible condition; maintenance requirements.
|
| 75.507 | Power connection points.
|
| 75.507-1 | 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 | Mine tracks.
|
| 75.508-2 | Changes in electric system map; recording.
|
| 75.509 | Electric power circuit and electric equipment; deenergization.
|
| 75.510 | Energized trolley wires; repair.
|
| 75.510-1 | Repair of energized trolley wires; training.
|
| 75.511 | Low-, medium-, or high-voltage distribution circuits and equipment; repair.
|
| 75.511-1 | Qualified person.
|
| 75.512 | Electric equipment; examination, testing and maintenance.
|
| 75.512-1 | Qualified person.
|
| 75.512-2 | Frequency of examinations.
|
| 75.513 | Electric conductor; capacity and insulation.
|
| 75.513-1 | Electric conductor; size.
|
| 75.514 | Electrical connections or splices; suitability.
|
| 75.515 | Cable fittings; suitability.
|
| 75.516 | Power wires; support.
|
| 75.516-1 | Installed insulators.
|
| 75.516-2 | Communication wires and cables; installation; insulation; support.
|
| 75.517 | Power wires and cables; insulation and protection.
|
| 75.517-1 | Power wires and cables; insulation and protection.
|
| 75.517-2 | Plans for insulation of existing bare power wires and cables.
|
| 75.518 | Electric equipment and circuits; overload and short circuit protection.
|
| 75.518-1 | Electric equipment and circuits; overload and short circuit protection; minimum requirements.
|
| 75.518-2 | Incandescent lamps; overload and short circuit protection.
|
| 75.519 | Main power circuits; disconnecting switches.
|
| 75.519-1 | 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 | Incandescent and fluorescent lamps.
|
| 75.523 | Electric face equipment; deenergization.
|
| 75.523-1 | Deenergization of self-propelled electric face equipment installation requirements.
|
| 75.523-2 | Deenergization of self-propelled electric face equipment; performance requirements.
|
| 75.523-3 | 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 | Approved cables; flame resistance.
|
| 75.601 | Short circuit protection of trailing cables.
|
| 75.601-1 | Short circuit protection; ratings and settings of circuit breakers.
|
| 75.601-2 | Short circuit protection; use of fuses; approval by the Secretary.
|
| 75.601-3 | 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 | Approved methods of grounding.
|
| 75.701 | Grounding metallic frames, casings and other enclosures of electric equipment.
|
| 75.701-1 | Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.
|
| 75.701-2 | Approved method of grounding metallic frames, casings and other enclosures receiving power from single-phase 110-220-volt circuit.
|
| 75.701-3 | 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 | Grounding wires; capacity of wires.
|
| 75.701-5 | Use of grounding connectors.
|
| 75.702 | Protection other than grounding.
|
| 75.702-1 | Protection other than grounding; approved by an authorized representative of the Secretary.
|
| 75.703 | Grounding offtrack direct-current machines and enclosures of related detached components.
|
| 75.703-1 | Approved method of grounding.
|
| 75.703-2 | Approved grounding mediums.
|
| 75.703-3 | Approved methods of grounding offtrack mobile, portable and stationary direct-current machines.
|
| 75.703-4 | 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 | Approved methods of grounding.
|
| 75.705 | Work on high-voltage lines; deenergizing and grounding.
|
| 75.705-1 | Work on high-voltage lines.
|
| 75.705-2 | Repairs to energized surface high-voltage lines.
|
| 75.705-3 | Work on energized high-voltage surface lines; reporting.
|
| 75.705-4 | Simultaneous repairs.
|
| 75.705-5 | Installation of protective equipment.
|
| 75.705-6 | Protective clothing; use and inspection.
|
| 75.705-7 | Protective equipment; inspection.
|
| 75.705-8 | Protective equipment; testing and storage.
|
| 75.705-9 | Operating disconnecting or cutout switches.
|
| 75.705-10 | Tying into energized high-voltage surface circuits.
|
| 75.705-11 | Use of grounded messenger wires; ungrounded systems.
|
| 75.706 | Deenergized underground power circuits; idle days idle shifts. |
| 75.800 | High-voltage circuits; circuit breakers.
|
| 75.800-1 | Circuit breakers; location.
|
| 75.800-2 | Approved circuit schemes.
|
| 75.800-3 | Testing, examination and maintenance of circuit breakers; procedures.
|
| 75.800-4 | 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 | Maximum voltage ground check circuits.
|
| 75.803-2 | 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 | Qualified person.
|
| 75.812-2 | High-voltage power centers and transformers; record of examination. |
| 75.900 | Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers.
|
| 75.900-1 | Circuit breakers; location.
|
| 75.900-2 | Approved circuit schemes.
|
| 75.900-3 | Testing, examinations and maintenance of circuit breakers; procedures.
|
| 75.900-4 | 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 | Maximum voltage ground check circuits.
|
| 75.902-2 | Approved ground check systems not employing pilot check wires.
|
| 75.902-4 | 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.
|
| Appendix A | to Subpart J |
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