Article 11 - Gassy Mines
- Section 4VAC25-40-5060 - Gassy mines
- Section 4VAC25-40-5070 - Effect of detection of flammable gases
- Section 4VAC25-40-5080 - Smoking materials prohibited
- Section 4VAC25-40-5090 - Use of open flames
- Section 4VAC25-40-5100 - Supervision of use of open flames
- Section 4VAC25-40-5110 - Limit on percentage of gases
- Section 4VAC25-40-5120 - Installation of main fans
- Section 4VAC25-40-5130 - Operation of main fans
- Section 4VAC25-40-5140 - Intakes and returns
- Section 4VAC25-40-5150 - Single shaft intakes and returns
- Section 4VAC25-40-5160 - Failure of fans
- Section 4VAC25-40-5170 - Failure of ventilation
- Section 4VAC25-40-5180 - Inspection after ventilation failure
- Section 4VAC25-40-5190 - Access of personnel after fan shutdown
- Section 4VAC25-40-5200 - Operation of booster fans
- Section 4VAC25-40-5210 - Equipping booster fans
- Section 4VAC25-40-5220 - Installation and operation of auxiliary fans
- Section 4VAC25-40-5230 - Inspection of auxiliary fans
- Section 4VAC25-40-5240 - Failure of auxiliary fans
- Section 4VAC25-40-5250 - Volume and velocity of air current
- Section 4VAC25-40-5260 - Quantity of air standards
- Section 4VAC25-40-5270 - Measurement of air quantities
- Section 4VAC25-40-5280 - Ventilation of battery-charging and transformer stations
- Section 4VAC25-40-5290 - Intake air for pumps and compressors
- Section 4VAC25-40-5300 - Changes in ventilation
- Section 4VAC25-40-5310 - Adjustments in ventilation
- Section 4VAC25-40-5320 - Detection of flammable gas
- Section 4VAC25-40-5330 - Use of air passing by opening of unsealed abandoned area to ventilate
- Section 4VAC25-40-5340 - Use of air passing through abandoned panels to ventilate
- Section 4VAC25-40-5350 - Abandoned areas to be sealed
- Section 4VAC25-40-5360 - Construction of seals
- Section 4VAC25-40-5370 - Fitting of seals for atmosphere sampling and pressure measurement
- Section 4VAC25-40-5380 - Crosscut intervals
- Section 4VAC25-40-5390 - Closing crosscuts
- Section 4VAC25-40-5400 - Line brattices
- Section 4VAC25-40-5410 - Composition of brattices
- Section 4VAC25-40-5420 - Damaged brattices
- Section 4VAC25-40-5430 - Crosscuts at abandoned rooms
- Section 4VAC25-40-5440 - Where entries or rooms to be started
- Section 4VAC25-40-5450 - Construction specifications for stoppings
- Section 4VAC25-40-5460 - Airtight stoppings
- Section 4VAC25-40-5470 - Installation of air locks
- Section 4VAC25-40-5480 - Ventilation of air locks
- Section 4VAC25-40-5490 - Doors to be kept closed
- Section 4VAC25-40-5500 - Overcasts and undercasts
- Section 4VAC25-40-5510 - Preshift examinations
- Section 4VAC25-40-5520 - Authorized personnel
- Section 4VAC25-40-5530 - Removal of danger signs
- Section 4VAC25-40-5540 - Detection devices
- Section 4VAC25-40-5550 - Frequency and method of examinations
- Section 4VAC25-40-5560 - Examination reports
- Section 4VAC25-40-5570 - Ventilation of gassy mines
- Section 4VAC25-40-5580 - Airflow to be maintained
- Section 4VAC25-40-5590 - Fan installation doors
- Section 4VAC25-40-5600 - Diesel-powered equipment
- Section 4VAC25-40-5610 - Trolley wires
- Section 4VAC25-40-5620 - Permissible equipment required
- Section 4VAC25-40-5630 - Permissible distribution boxes required
- Section 4VAC25-40-5640 - Electric equipment
- Section 4VAC25-40-5650 - Permissible electric lamps
- Section 4VAC25-40-5660 - Permissible or approved explosives
- Section 4VAC25-40-5670 - Written list of conditions
- Section 4VAC25-40-5680 to 4VAC25-40-5690 - Repealed
- Section 4VAC25-40-5700 - Examinations for gas
- Section 4VAC25-40-5710 - Limitations on firing shots
- Section 4VAC25-40-5720 - Repealed
- Section 4VAC25-40-5730 to 4VAC25-40-5740 - Repealed