GroundRules
Browse Virginia regulations
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- 4VAC25-40-5210 · Equipping booster fans
- 4VAC25-40-5220 · Installation and operation of auxiliary fans
- 4VAC25-40-5230 · Inspection of auxiliary fans
- 4VAC25-40-5240 · Failure of auxiliary fans
- 4VAC25-40-5250 · Volume and velocity of air current
- 4VAC25-40-5260 · Quantity of air standards
- 4VAC25-40-5270 · Measurement of air quantities
- 4VAC25-40-5280 · Ventilation of battery-charging and transformer stations
- 4VAC25-40-5290 · Intake air for pumps and compressors
- 4VAC25-40-5300 · Changes in ventilation
- 4VAC25-40-5310 · Adjustments in ventilation
- 4VAC25-40-5320 · Detection of flammable gas
- 4VAC25-40-5330 · Use of air passing by opening of unsealed abandoned area to ventilate
- 4VAC25-40-5340 · Use of air passing through abandoned panels to ventilate
- 4VAC25-40-5350 · Abandoned areas to be sealed
- 4VAC25-40-5360 · Construction of seals
- 4VAC25-40-5370 · Fitting of seals for atmosphere sampling and pressure measurement
- 4VAC25-40-5380 · Crosscut intervals
- 4VAC25-40-5390 · Closing crosscuts
- 4VAC25-40-5400 · Line brattices
- 4VAC25-40-5410 · Composition of brattices
- 4VAC25-40-5420 · Damaged brattices
- 4VAC25-40-5430 · Crosscuts at abandoned rooms
- 4VAC25-40-5440 · Where entries or rooms to be started
- 4VAC25-40-5450 · Construction specifications for stoppings
- 4VAC25-40-5460 · Airtight stoppings
- 4VAC25-40-5470 · Installation of air locks
- 4VAC25-40-5480 · Ventilation of air locks
- 4VAC25-40-5490 · Doors to be kept closed
- 4VAC25-40-5500 · Overcasts and undercasts
- 4VAC25-40-5510 · Preshift examinations
- 4VAC25-40-5520 · Authorized personnel
- 4VAC25-40-5530 · Removal of danger signs
- 4VAC25-40-5540 · Detection devices
- 4VAC25-40-5550 · Frequency and method of examinations
- 4VAC25-40-5560 · Examination reports
- 4VAC25-40-5570 · Ventilation of gassy mines
- 4VAC25-40-5580 · Airflow to be maintained
- 4VAC25-40-5590 · Fan installation doors
- 4VAC25-40-5600 · Diesel-powered equipment
- 4VAC25-40-5610 · Trolley wires
- 4VAC25-40-5620 · Permissible equipment required
- 4VAC25-40-5630 · Permissible distribution boxes required
- 4VAC25-40-5640 · Electric equipment
- 4VAC25-40-5650 · Permissible electric lamps
- 4VAC25-40-5660 · Permissible or approved explosives
- 4VAC25-40-5670 · Written list of conditions
- 4VAC25-40-5700 · Examinations for gas
- 4VAC25-40-5710 · Limitations on firing shots
- 4VAC25-40-5750 · Notice of intent to mine near gas or oil wells
- 4VAC25-40-5760 · Application for mining near gas or oil wells
- 4VAC25-40-5770 · Mining plan
- 4VAC25-40-5780 · Approval to mine near plugged gas or oil well
- 4VAC25-60-10 · Definitions
- 4VAC25-60-20 · General requirements
- 4VAC25-60-30 · [Reserved]
- 4VAC25-60-40 · Approval and waivers
- 4VAC25-60-50 · [Reserved]
- 4VAC25-60-70 · Minimum requirements for machines using, or used as, automated temporary roof support systems
- 4VAC25-70-10 · General requirements
- 4VAC25-90-10 · Definitions
- 4VAC25-90-20 · Diesel equipment approval
- 4VAC25-90-30 · Operation of diesel equipment
- 4VAC25-90-40 · Maintenance of diesel equipment
- 4VAC25-90-50 · Ventilation of diesel equipment
- 4VAC25-90-60 · Emission testing and evaluation
- 4VAC25-90-70 · Air quality
- 4VAC25-90-80 · Fire protection for diesel-powered equipment
- 4VAC25-90-90 · Fuel specifications
- 4VAC25-90-100 · Fuel use, storage, and handling
- 4VAC25-90-110 · [Reserved]
- 4VAC25-90-130 · [Reserved]
- 4VAC25-90-280 · [Reserved]
- 4VAC25-90-310 · [Reserved]
- 4VAC25-90-350 · [Reserved]
- 4VAC25-90-370 · [Reserved]
- 4VAC25-101-10 · Definitions
- 4VAC25-101-20 · Application for permits; maps or plats; notice
- 4VAC25-101-30 · Receipt of coal seam information; decision on casing
- 4VAC25-101-40 · Expiration of permit
- 4VAC25-101-50 · Venting methane; bleeder system
- 4VAC25-101-60 · Requirements for issuance of permit
- 4VAC25-101-70 · Filing of objections; scheduling of hearing
- 4VAC25-101-80 · Location of vertical ventilation hole
- 4VAC25-101-90 · Recordkeeping
- 4VAC25-101-100 · Review of action of chief
- 4VAC25-101-110 · Casing requirements for vertical ventilation holes
- 4VAC25-101-120 · Survey requirements
- 4VAC25-101-130 · Correction requirements
- 4VAC25-101-140 · Filing of report
- 4VAC25-101-150 · Mining within 500 feet of a vertical ventilation hole or gas well
- 4VAC25-101-160 · Mining within 200 feet of a vertical ventilation hole, gas well or pipeline
- 4VAC25-101-170 · Pillars of coal to be left unmined, and other protective measures
- 4VAC25-101-180 · Mining within 200 feet of a plugged vertical ventilation hole or gas well
- 4VAC25-101-190 · Mining seams impacted by vertical ventilation holes and coalbed methane wells intended to degas the seams being mined
- 4VAC25-101-200 · Plugging of vertical ventilation holes
- 4VAC25-101-210 · Identifying plugged holes; plugging affidavit
- 4VAC25-101-220 · Annual report; abandonment
- 4VAC25-110-10 · Definitions
- 4VAC25-110-20 · Certification