reglab/statecodes huggingface dataset:
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4920 - Cutting of ropes for inspections

Current through Register Vol. 40, No. 24, July 15, 2024
On other than friction hoists, ropes shall be cut off
						and reconnected to the conveyance as often as necessary to ensure adequate
						inspection of rope condition and to distribute wear of the rope. At least six
						feet shall be cut from the rope above the highest connection; this portion
						shall be examined carefully for corrosion, damage, wear, and fatigue by the
						rope manufacturer or an acceptable agency.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4930 - Cutting of ropes to distribute wear

Current through Register Vol. 40, No. 24, July 15, 2024
Hoisting ropes wound in multiple layers shall be cut off
						and repositioned on the drum at regular intervals as necessary to distribute
						wear of the rope. The length of cutoff at the drum end should not be an even
						multiple of the circumference of the drum.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4940 - Ropes to be calipered

Current through Register Vol. 40, No. 24, July 15, 2024
Ropes shall be calipered at regular interval as
						necessary to effectively determine the rate of wear and damage. Caliper
						measurements shall be taken immediately above the socket or clips and above the
						safety connection.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4950 - Electromagnetic or other nondestructive testing

Current through Register Vol. 40, No. 24, July 15, 2024
Electromagnetic or other nondestructive rope testing
						systems shall be used only as supplements to, and not as substitutes for,
						recommended inspection and tests.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4960 - Substandard ropes

Current through Register Vol. 40, No. 24, July 15, 2024
Ropes shall not be used for hoisting when they
						have:
1. More than six broken wires in
					 any lay; and
2. Crown wires worn to
					 less than 65% of the original diameter.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of
						  Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4970 - Testing on each shift

Current through Register Vol. 40, No. 24, July 15, 2024
Hoist persons shall examine their hoists and shall test
						overtravel, dead man controls, position indicators, and braking mechanisms at
						the beginning of each shift.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4980 - Testing with empty conveyances

Current through Register Vol. 40, No. 24, July 15, 2024
Empty conveyances shall be operated up and down shafts
						at least one round trip before hoisting persons after any shaft or equipment
						repairs and before regular mantrips are hoisted or lowered.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-4990 - Inspection of ropes and connections

Current through Register Vol. 40, No. 24, July 15, 2024
Rope and conveyance connections to conveyances shall be
						inspected daily.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-5000 - Inspection of safety catches

Current through Register Vol. 40, No. 24, July 15, 2024
Safety catches shall be inspected daily; drop tests
						shall be made at the time of installation. Every two months the cage shall be
						rested on chairs or proper blocking to check the operation or activation of the
						safety catches by allowing the rope to slacken suddenly.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-5010 - Inspection of shafts

Current through Register Vol. 40, No. 24, July 15, 2024
Shafts shall be inspected at least
						weekly.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-5020 - Inspection of sheaves

Current through Register Vol. 40, No. 24, July 15, 2024
Sheaves shall be inspected daily and kept properly
						lubricated.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-5030 - Lubrication of rollers

Current through Register Vol. 40, No. 24, July 15, 2024
Rollers used in inclined shafts shall be lubricated
						properly and kept in good repair.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 10 - Personnel Hoisting › Section 4VAC25-40-5040 to 4VAC25-40-5050 - Repealed

Current through Register Vol. 40, No. 24, July 15, 2024
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5060 - Gassy mines

Current through Register Vol. 40, No. 24, July 15, 2024
A mine shall be deemed gassy and thereafter operated as a
						gassy mine if:
1. Flammable gas
					 emanating from the ore body or the strata surrounding the ore body has been
					 ignited in the mine;
2. A
					 concentration of 0.25% or more, by air analysis, of flammable gas emanating
					 only from the ore body or the strata surrounding the ore body has been detected
					 not less than 12 inches from the back, face, or ribs in any open workings;
					 or
3. The mine is connected to a
					 gassy mine.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5070 - Effect of detection of flammable gases

Current through Register Vol. 40, No. 24, July 15, 2024
Flammable gases detected only while draining mines or
						flooded sections of mines, or during other mine reclamation operations, shall
						not be used to permanently classify a mine gassy. During such periods that any
						flammable gas is present in the mine, the gassy area of the mine shall be
						operated in accordance with appropriate standards in this
						article.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5080 - Smoking materials prohibited

Current through Register Vol. 40, No. 24, July 15, 2024
Persons shall not smoke or carry smoking materials,
						matches, or lighters underground. The operator shall institute a reasonable
						program to ensure that persons entering the mine do not carry smoking
						materials, matches, or lighters.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5090 - Use of open flames

Current through Register Vol. 40, No. 24, July 15, 2024
Except when necessary for welding or cutting, open
						flames shall not be used in other than fresh air or in places where flammable
						gases are present or may enter the air current.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5100 - Supervision of use of open flames

Current through Register Vol. 40, No. 24, July 15, 2024
Welding or cutting with arc or flame underground in
						other than fresh air, or in places where flammable gases are present or may
						enter the air current, shall be under the direct supervision of a qualified
						person who shall test for flammable gases before and frequently during such
						operations.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5110 - Limit on percentage of gases

Current through Register Vol. 40, No. 24, July 15, 2024
Welding or cutting shall not be performed in atmospheres
						containing more than 1.0% of flammable gases.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5120 - Installation of main fans

Current through Register Vol. 40, No. 24, July 15, 2024
Main fans shall be:
1. Installed on the surface;
2. Powered electrically from a circuit
					 independent of the mine power circuit. Internal combustion engines shall be
					 used only for standby power or where electrical power is not
					 available;
3. Installed in
					 fireproof housing provided with fireproof air ducts;
4. Offset not less than 15 feet from the
					 nearest side of the mine opening and equipped with ample means of pressure
					 relief unless:
a. The opening is not in direct
					 line with forces which would come out of the mine should an explosion occur;
					 and
b. Another opening not less
					 than 15 feet nor more than 100 feet from the fan opening is equipped with a
					 weak wall stopping or explosion doors in direct line with the forces which
					 would come out of the mine should an explosion occur;
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5130 - Operation of main fans

Current through Register Vol. 40, No. 24, July 15, 2024
Main fans shall be:
1. Operated continuously except when the mine
					 is shut down for an extended period;
2. Provided with pressure-recording gauges;
					 and
3. Inspected daily and records
					 kept of such inspections and of fan maintenance.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of
						  Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5140 - Intakes and returns

Current through Register Vol. 40, No. 24, July 15, 2024
The main intake and return air currents in mines shall
						be in separate shafts, slopes, or drifts.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5150 - Single shaft intakes and returns

Current through Register Vol. 40, No. 24, July 15, 2024
When single shafts are used for intake and return, the
						curtain wall or partition shall be constructed of reinforced concrete or
						equivalent and provided with pressure relief devices.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5160 - Failure of fans

Current through Register Vol. 40, No. 24, July 15, 2024
When a main fan fails or stops and ventilation is not
						restored in a reasonable time, action shall be taken to cut off the power to
						the areas affected and to withdraw all persons from such
						areas.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5170 - Failure of ventilation

Current through Register Vol. 40, No. 24, July 15, 2024
When there has been a failure of mine ventilation other
						than a failure of a main fan as described in
						4VAC25-40-5160, the operator
						shall:
1. Withdraw all persons from
					 the unventilated active areas; and
2. De-energize the power in unvented active
					 areas. The power shall not be restored or persons permitted to reenter the
					 affected active areas until a certified foreman has determined that the
					 flammable gas concentration in such active areas is less than 1.0%.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5180 - Inspection after ventilation failure

Current through Register Vol. 40, No. 24, July 15, 2024
When ventilation is not restored in a reasonable time,
						all persons shall be removed from the affected areas; after ventilation has
						been restored, the areas affected shall be examined by a certified foreman for
						gas and other hazards and made safe before power is restored and before
						persons, other than the examiners and other authorized persons, return to the
						areas affected.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5190 - Access of personnel after fan shutdown

Current through Register Vol. 40, No. 24, July 15, 2024
When the main fan or fans have been shut down with all
						persons out of the mine, no person, other than the certified foreman, shall go
						underground until the fans have been started and the mine examined for gas and
						other hazards and declared safe.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5200 - Operation of booster fans

Current through Register Vol. 40, No. 24, July 15, 2024
Booster fans shall be:
1. Operated by permissible drive units
					 maintained in permissible condition;
2. Operated only in air containing less than
					 1.0% flammable gas; and
3. Kept in
					 continuous operation when persons are in active areas of the mine affected by
					 such fans.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5210 - Equipping booster fans

Current through Register Vol. 40, No. 24, July 15, 2024
Booster fans shall be:
1. Provided with an automatic signal device
					 to give warning or alarm should the fan system malfunction. The signal device
					 shall be so located that it can be seen or heard by a responsible person at all
					 times when persons are underground;
2. Equipped with a device that automatically
					 de-energizes the power in unventilated active areas should the fan system
					 malfunction; and
3. Equipped with
					 two sets of controls capable of starting, stopping, and reversing the fans. One
					 set of controls shall be located at the fans. A second set of controls shall be
					 at another location remote from the fans.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5220 - Installation and operation of auxiliary fans

Current through Register Vol. 40, No. 24, July 15, 2024
Auxiliary fans shall be:
1. Installed and operated in permissible
					 condition; and
2. Operated only in
					 air containing not more than 1.0% flammable gas.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of
						  Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5230 - Inspection of auxiliary fans

Current through Register Vol. 40, No. 24, July 15, 2024
Auxiliary fans shall be inspected by persons approved by
						the director at least twice each shift.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5240 - Failure of auxiliary fans

Current through Register Vol. 40, No. 24, July 15, 2024
Persons shall be withdrawn from areas affected by
						auxiliary or booster fans when such fans slow down or stop.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5250 - Volume and velocity of air current

Current through Register Vol. 40, No. 24, July 15, 2024
The volume and velocity of the current of air coursed
						through all active areas shall be sufficient to dilute and carry away flammable
						gases, smoke and fumes.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5260 - Quantity of air standards

Current through Register Vol. 40, No. 24, July 15, 2024
The quantity of air coursed through the last open
						crosscut in pairs or sets of entries, or through other ventilation openings
						nearest the face, shall be at least 6,000 cubic feet a
						minute.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5270 - Measurement of air quantities

Current through Register Vol. 40, No. 24, July 15, 2024
At least once each week, a certified foreman shall
						measure the volume of air entering the main intakes and leaving the main
						returns, the volume of the intake and return of each split, and the volume
						through the last open crosscuts or other ventilation openings nearest the
						active faces. Records of such measurements shall be kept in a book on the
						surface.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5280 - Ventilation of battery-charging and transformer stations

Current through Register Vol. 40, No. 24, July 15, 2024
Permanently installed battery-charging and transformer
						stations shall be ventilated by separate splits of air conducted directly to
						return air courses.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5290 - Intake air for pumps and compressors

Current through Register Vol. 40, No. 24, July 15, 2024
Electrically-operated pumps, compressors, and portable
						substations shall be in intake air.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5300 - Changes in ventilation

Current through Register Vol. 40, No. 24, July 15, 2024
Changes in ventilation that materially affect the main
						air current or any split thereof and may affect the safety of persons in the
						mine shall be made only when the mine is idle. Only those persons engaged in
						making such changes shall be permitted in the mine during the change. Power
						shall be removed from the areas affected by the change before work starts and
						not restored until the effect of the change has been ascertained and the
						affected areas determined to be safe by a certified foreman.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5310 - Adjustments in ventilation

Current through Register Vol. 40, No. 24, July 15, 2024
If flammable gas in excess of 1.0% by volume is detected
						in the air not less than 12 inches from the back, face and rib of an
						underground active area, or in air returning from an area or areas, adjustments
						shall be made in the ventilation immediately so that the concentration of
						flammable gas in such air is reduced to 1.0% or less.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5320 - Detection of flammable gas

Current through Register Vol. 40, No. 24, July 15, 2024
If 1.5% or higher concentration of flammable gas is
						detected in air returning from an underground area or areas, the persons shall
						be withdrawn and the power cut off to the portion of the mine endangered by
						such flammable gas until the concentration of such gas is reduced to 1.0% or
						less.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5330 - Use of air passing by opening of unsealed abandoned area to ventilate

Current through Register Vol. 40, No. 24, July 15, 2024
Air that has passed by an opening of any unsealed
						abandoned area and contains 0.25% or more of flammable gas shall not be used to
						ventilate working areas. Examinations of such air shall be conducted during the
						preshift examinations required by
						4VAC25-40-5510.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5340 - Use of air passing through abandoned panels to ventilate

Current through Register Vol. 40, No. 24, July 15, 2024
Air that has passed through an abandoned panel or area
						which is inaccessible or unsafe for inspection shall not be used to ventilate
						any working area in such mine. No air which has been used to ventilate any area
						from which the pillars have been removed shall be used to ventilate any working
						area in such mine, except that such air, if it does not contain 0.25% by volume
						or more of methane, may be used to ventilate enough advancing working areas
						immediately adjacent to the line of retreat to maintain an orderly sequence of
						pillar recovery on a set of entries.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5350 - Abandoned areas to be sealed

Current through Register Vol. 40, No. 24, July 15, 2024
Abandoned areas shall be sealed or ventilated; areas
						that are not sealed shall be barricaded and posted against unauthorized
						entry.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5360 - Construction of seals

Current through Register Vol. 40, No. 24, July 15, 2024
Seals shall be of substantial construction. Exposed
						surfaces shall be made of fire-resistant material, or, if the commodity mined
						is combustible, seals shall be made of incombustible
						material.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5370 - Fitting of seals for atmosphere sampling and pressure measurement

Current through Register Vol. 40, No. 24, July 15, 2024
One or more seals of every sealed area shall be fitted
						with a pipe and a valve or cap to permit sampling of the atmosphere and
						measurement of the pressure behind such seals.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5380 - Crosscut intervals

Current through Register Vol. 40, No. 24, July 15, 2024
Crosscuts shall be made at intervals not in excess of
						100 feet between entries and between rooms.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5390 - Closing crosscuts

Current through Register Vol. 40, No. 24, July 15, 2024
Crosscuts shall be closed when necessary to provide
						adequate face ventilation.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5400 - Line brattices

Current through Register Vol. 40, No. 24, July 15, 2024
Line brattices or other suitable devices shall be
						installed from the last open crosscut to a point near the face to ensure
						positive air flow to the face of every active underground working area, unless
						the director or his authorized representative permits an exception to this
						requirement.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5410 - Composition of brattices

Current through Register Vol. 40, No. 24, July 15, 2024
Brattice cloth shall be of flame-resistant
						material.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5420 - Damaged brattices

Current through Register Vol. 40, No. 24, July 15, 2024
Damaged brattices shall be repaired
						promptly.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5430 - Crosscuts at abandoned rooms

Current through Register Vol. 40, No. 24, July 15, 2024
Crosscuts shall be provided, where practicable, at or
						near the faces of entries and rooms before they are
						abandoned.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5440 - Where entries or rooms to be started

Current through Register Vol. 40, No. 24, July 15, 2024
Entries or rooms shall not be started off entries beyond
						the last open crosscuts, except that room necks and entries not to exceed 18
						feet in depth may be turned off entries beyond the last open crosscuts if such
						room necks or entries are kept free of accumulations of flammable gas by use of
						line brattice or other adequate means.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5450 - Construction specifications for stoppings

Current through Register Vol. 40, No. 24, July 15, 2024
Stoppings in crosscuts between intake and return
						airways, other than room entries, shall be built of solid, substantial
						material; exposed surfaces shall be made of fire-resistant material, or if the
						material mined is combustible, stoppings shall be made of incombustible
						material.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5460 - Airtight stoppings

Current through Register Vol. 40, No. 24, July 15, 2024
Stoppings shall be reasonably
						airtight.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5470 - Installation of air locks

Current through Register Vol. 40, No. 24, July 15, 2024
The main ventilation shall be so arranged by means of
						air locks, overcasts, or undercasts that the passage of trips or persons does
						not cause interruptions of air currents. Where air locks are impractical,
						single doors may be used if they are attended constantly while the areas of the
						mine affected by the doors are being worked, unless they are operated
						mechanically or are self-closing.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5480 - Ventilation of air locks

Current through Register Vol. 40, No. 24, July 15, 2024
Air locks shall be ventilated sufficiently to prevent
						accumulations of flammable gas inside the locks.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5490 - Doors to be kept closed

Current through Register Vol. 40, No. 24, July 15, 2024
Doors shall be kept closed except when persons or
						equipment passing through the doorways.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5500 - Overcasts and undercasts

Current through Register Vol. 40, No. 24, July 15, 2024
Overcasts and undercasts shall be:
1. Constructed tightly of incombustible
					 material;
2. Of sufficient strength
					 to withstand possible falls from the back; and
3. Kept clear of obstructions.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code of
						  Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5510 - Preshift examinations

Current through Register Vol. 40, No. 24, July 15, 2024
Preshift examinations shall be made of all working areas
						by certified foremen within three hours before any workers, other than the
						examiners, enter the mine.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5520 - Authorized personnel

Current through Register Vol. 40, No. 24, July 15, 2024
Only certified foremen and persons authorized to correct
						the dangerous conditions shall enter places or areas where danger signs are
						posted.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5530 - Removal of danger signs

Current through Register Vol. 40, No. 24, July 15, 2024
Danger signs shall not be removed until the dangerous
						conditions have been corrected.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5540 - Detection devices

Current through Register Vol. 40, No. 24, July 15, 2024
Each operator shall use permissible devices for
						detecting flammable gases, oxygen deficiency, carbon monoxide, and other air
						contaminants.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5550 - Frequency and method of examinations

Current through Register Vol. 40, No. 24, July 15, 2024
Examinations for dangerous conditions including tests for
						flammable gas with an acceptable device shall be made at least once each week,
						and at intervals of not more than seven days, by the certified foreman, except
						during weeks in which the mine is idle for the entire week.
The certified foreman shall:
1. Examine and make tests:
a. In the return of each split where it
					 enters the main return;
b. On
					 accessible pillar falls;
c. At
					 seals;
d. In the main
					 return;
e. In at least one entry of
					 each intake and return airway in its entirety;
f. In idle workings; and
g. In abandoned workings, insofar as
					 conditions permit;
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5560 - Examination reports

Current through Register Vol. 40, No. 24, July 15, 2024
The certified foreman or other designated mine official
						shall read and countersign promptly the reports of daily and weekly
						examinations by competent persons and shall take prompt action to have
						dangerous conditions corrected.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5570 - Ventilation of gassy mines

Current through Register Vol. 40, No. 24, July 15, 2024
All gassy mines shall be ventilated
						mechanically.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5580 - Airflow to be maintained

Current through Register Vol. 40, No. 24, July 15, 2024
Airflow shall be maintained in all intake and return air
						courses of a mine. When multiple main fans are used, such ventilation systems
						shall not develop areas without perceptible air movement.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5590 - Fan installation doors

Current through Register Vol. 40, No. 24, July 15, 2024
In mines ventilated by a combination of multiple blowing
						or multiple exhausting fans, each main fan installation shall be equipped with
						noncombustible doors designed and positioned so that, in the event of failure
						of a main fan, these doors will automatically close to prevent air reversal
						through the fan. The doors shall be located so that they are not in direct line
						with forces which would come out of the mine, should an explosion
						occur.
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305
						  of the Code of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5600 - Diesel-powered equipment

Current through Register Vol. 40, No. 24, July 15, 2024
Diesel-powered equipment shall not be taken into or
						operated in places where flammable gas exceeds 1.0% of any point not less than
						12 inches from the back, face and rib.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.
Virginia Administrative Code › Title 4 - CONSERVATION AND NATURAL RESOURCES › Agency 25 - DEPARTMENT OF ENERGY › Chapter 40 - SAFETY AND HEALTH REGULATIONS FOR MINERAL MINING › Part XV - Safety and Health Regulations-Underground Only › Article 11 - Gassy Mines › Section 4VAC25-40-5610 - Trolley wires

Current through Register Vol. 40, No. 24, July 15, 2024
Trolley wires and trolley feeder wires shall be on
						intake air and shall not exceed beyond the last open crosscut or other
						ventilation opening. Such wires shall be kept at least 150 feet from pillar
						workings.
Statutory Authority
§§ 45.1-161.3 and 45.1-161.294 of the Code
						  of Virginia.