reglab/statecodes huggingface dataset:
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4262 - Underground transformer stations, combustible liquid storage and dispensing areas, pump rooms, compressor rooms, and hoist rooms

Current through July 13, 2024
Transformer stations, storage and dispensing areas for
					 combustible liquids, pump rooms, compressor rooms, and hoist rooms shall be
					 provided with fire protection of a type, size, and quantity that can extinguish
					 fires of any class in their early stages which could occur as a result of the
					 hazards present.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4263 - Underground belt conveyors

Current through July 13, 2024
Fire protection shall be provided at the head, tail, drive,
					 and take-up pulleys of underground belt conveyors. Provisions shall be made for
					 extinguishing fires along the beltline. Fire protection shall be of a type,
					 size, and quantity that can extinguish fires of any class in their early stages
					 which could occur as a result of the fire hazards present.
Firefighting Procedures/Alarms/Drills
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4330 - Surface firefighting, evacuation, and rescue procedures

Current through July 13, 2024
(a) Mine operators shall establish emergency
				  firefighting, evacuation, and rescue procedures for the surface portions of
				  their operations. These procedures shall be coordinated in advance with
				  available firefighting organizations.
(b) Fire alarm procedures or systems shall be
				  established to promptly warn every person who could be endangered by a
				  fire.
(c) Fire alarm systems shall
				  be maintained in operable condition.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4331 - Surface firefighting drills

Current through July 13, 2024
Emergency firefighting drills shall be held at least once
					 every six months for persons assigned surface firefighting responsibilities by
					 the mine operator.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4360 - Underground alarm systems

Current through July 13, 2024
(a) Fire alarm
				  systems capable of promptly warning every person underground, except as
				  provided in paragraph (b), shall be provided and maintained in operating
				  condition.
(b) If persons are
				  assigned to work areas beyond the warning capabilities of the system,
				  provisions shall be made to alert them in a manner to provide for their safe
				  evacuation in the event of a fire.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4361 - Underground evacuation drills

Current through July 13, 2024
(a) At least once
				  every six months, mine evacuation drills shall be held to assess the ability of
				  all persons underground to reach the surface or other designated points of
				  safety within the time limits of the self-rescue devices that would be used
				  during an actual emergency.
(b) The
				  evacuation drills shall-
(1) Be held for each
				  shift at some time other than a shift change and involve all persons
				  underground;
(2) Involve activation
				  of the fire alarm system; and
(3)
				  Include evacuation of all persons from their work areas to the surface or to
				  designated central evacuation points.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4362 - Underground rescue and firefighting operations

Current through July 13, 2024
Following evacuation of a mine in a fire emergency, only
					 persons wearing and trained in the use of mine rescue apparatus shall
					 participate in rescue and firefighting operations in advance of the fresh air
					 base.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4363 - Underground evacuation instruction

Current through July 13, 2024
(a) At least once
				  every twelve months, all persons who work underground shall be instructed in
				  the escape and evacuation plans and procedures and fire warning signals in
				  effect at the mine.
(b) Whenever a
				  change is made in escape and evacuation plans and procedures for any area of
				  the mine, all persons affected shall be instructed in the new plans or
				  procedures.
(c) Whenever persons
				  are assigned to work in areas other than their regularly assigned areas, they
				  shall be instructed about the escapeway for that area at the time of such
				  assignment. However, persons who normally work in more than one area of the
				  mine shall be instructed at least once every twelve months about the location
				  of escapeways for all areas of the mine in which they normally work or
				  travel.
(d) At the completion of
				  any instruction given under this standard, the mine operator shall certify the
				  date that the instruction was given. Certifications shall be retained for at
				  least one year.
Flammable and Combustible Liquids and Gases
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4400 - Use restrictions

Current through July 13, 2024
(a) Flammable
				  liquids shall not be used for cleaning.
(b) Solvents shall not be used near an open
				  flame or other ignition source, near any source of heat, or in an atmosphere
				  that can elevate the temperature of the solvent above the flash
				  point.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4401 - Storage tank foundations

Current through July 13, 2024
Fixed, unburied, flammable or combustible liquid storage
					 tanks shall be securely mounted on firm foundations. Piping shall be provided
					 with flexible connections or other special fittings where necessary to prevent
					 leaks caused by tanks settling.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4402 - Safety can use

Current through July 13, 2024
Small quantities of flammable liquids drawn from storage
					 shall be kept in safety cans labeled to indicate the
					 contents.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4430 - Surface storage facilities

Current through July 13, 2024
The requirements of this standard apply to surface areas
					 only.
(a) Storage tanks for flammable
				  or combustible liquids shall be-
(1) Capable
				  of withstanding working pressures and stresses and compatible with the type of
				  liquid stored;
(2) Maintained in a
				  manner that prevents leakage;
(3)
				  Isolated or separated from ignition sources to prevent fire or explosion;
				  and
(4) Vented or otherwise
				  constructed to prevent development of pressure or vacuum as a result of
				  filling, emptying, or atmospheric temperature changes. Vents for storage of
				  Class I, II, or IIIA liquids shall be isolated or separated from ignition
				  sources. These pressure relief requirements do not apply to tanks used for
				  storage of Class IIIB liquids that are larger than 12,000 gallons in
				  capacity.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4431 - Surface storage restrictions

Current through July 13, 2024
(a) On the surface,
				  no unburied flammable or combustible liquids or flammable gases shall be stored
				  within 100 feet of the following:
(1) Mine
				  openings or structures attached to mine openings.
(2) Fan installations for underground
				  ventilation.
(3) Hoist
				  houses.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4460 - Storage of flammable liquids underground

Current through July 13, 2024
(a) Flammable
				  liquids shall not be stored underground, except-
(1) Small quantities stored in tightly closed
				  cabinets away from any heat source. The small quantities shall be stored in
				  safety cans or in non-glass containers of a capacity equal to or less than a
				  safety can. Each cabinet shall be labeled "flammables."
(2) Acetylene and liquefied petroleum gases
				  stored in containers designed for that specific purpose.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4461 - Gasoline use restrictions underground

Current through July 13, 2024
If gasoline is used underground to power internal
					 combustion engines-
(a) The mine shall
				  be nongassy and shall have multiple horizontal or inclined roadways from the
				  surface large enough to accommodate vehicular traffic;
(b) All roadways and other openings shall
				  connect with another opening every 100 feet by a passage large enough to
				  accommodate any vehicle in the mine or alternate routes shall provide
				  equivalent escape capabilities; and
(c) No roadway or other opening shall be
				  supported or lined with wood or other combustible materials.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4462 - Storage of combustible liquids underground

Current through July 13, 2024
The requirements of this standard apply to underground
					 areas only.
(a) Combustible liquids,
				  including oil or grease, shall be stored in non-glass containers or storage
				  tanks. The containers or storage tanks shall be-
(1) Capable of withstanding working pressures
				  and stresses and compatible with the type of liquid stored;
(2) Maintained in a manner that prevents
				  leakage;
(3) Located in areas free
				  of combustible materials or in areas where any exposed combustible materials
				  are coated with one inch of shotcrete, one-half inch of gunite, or other
				  noncombustible material with equivalent fire protection characteristics;
				  and
(4) Separated from explosives
				  or blasting agents, shaft stations, and ignition sources including electric
				  equipment that could create sufficient heat or sparks to pose a fire hazard.
				  Separation shall be sufficient to prevent the occurrence or minimize the spread
				  of fire.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4463 - Liquefied petroleum gas use underground

Current through July 13, 2024
Use of liquefied petroleum gases underground shall be
					 limited to maintenance work.
Installation/Construction/Maintenance
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4500 - Heat sources

Current through July 13, 2024
Heat sources capable of producing combustion shall be
					 separated from combustible materials if a fire hazard could be
					 created.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4501 - Fuel lines

Current through July 13, 2024
Fuel lines shall be equipped with valves capable of
					 stopping the flow of fuel at the source and shall be located and maintained to
					 minimize fire hazards. This standard does not apply to fuel lines on
					 self-propelled equipment.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4502 - Battery-charging stations

Current through July 13, 2024
(a)
				  Battery-charging stations shall be ventilated with a sufficient volume of air
				  to prevent the accumulation of hydrogen gas.
(b) Smoking, use of open flames, or other
				  activities that could create an ignition source shall be prohibited at the
				  battery charging station during battery charging.
(c) Readily visible signs prohibiting smoking
				  or open flames shall be posted at battery-charging stations during battery
				  charging.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4503 - Conveyor belt slippage

Current through July 13, 2024
(a) Surface belt
				  conveyors within confined areas where evacuation would be restricted in the
				  event of a fire resulting from belt-slippage shall be equipped with a detection
				  system capable of automatically stopping the drive pulley.
(b) Underground belt conveyors shall be
				  equipped with a detection system capable of automatically stopping the drive
				  pulley if slippage could cause ignition of the belt.
(c) A person shall attend the belt at the
				  drive pulley when it is necessary to operate the conveyor while temporarily
				  bypassing the automatic function.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4504 - Fan installations

Current through July 13, 2024
(a) Fan houses, fan
				  bulkheads for main and booster fans, and air ducts connecting main fans to
				  underground openings shall be constructed of noncombustible
				  materials.
(b) Areas within 25 feet
				  of main fans or booster fans shall be free of combustible materials, except
				  installed wiring, ground and track support, headframes, and direct-fired
				  heaters. Other timber shall be coated with one inch of shotcrete, one-half inch
				  of gunite, or other noncombustible materials.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4505 - Fuel lines to underground areas

Current through July 13, 2024
Fuel lines into underground storage or dispensing areas
					 shall be drained at the completion of each transfer of fuel unless the
					 following requirements are met:
(a)
				  The valve at the supply source shall be kept closed when fuel is not being
				  transferred.
(b) The fuel line
				  shall be-
(1) Capable of withstanding working
				  pressures and stresses;
(2) Located
				  to prevent damage; and
(3) Located
				  in areas free of combustible materials or in areas where any exposed
				  combustible materials are coated with one inch of shotcrete, one-half inch of
				  gunite, or other noncombustible material with equivalent fire protection
				  characteristics.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4530 - Exits for surface buildings and structures

Current through July 13, 2024
Surface buildings or structures in which persons work shall
					 have a sufficient number of exits to permit prompt escape in case of
					 fire.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4531 - Surface flammable or combustible liquid storage buildings or rooms

Current through July 13, 2024
(a) Surface storage buildings or storage
				  rooms in which flammable or combustible liquids, including grease, are stored
				  and that are within 100 feet of any person's work station shall be ventilated
				  with a sufficient volume of air to prevent the accumulation of flammable
				  vapors.
(b) In addition, the
				  buildings or rooms shall be-
(1) Constructed
				  to meet a fire resistance rating of at least one hour; or
(2) Equipped with an automatic fire
				  suppression system; or
(3) Equipped
				  with an early warning fire detection device that will alert any person who
				  could be endangered by a fire, provided that no person's work station is in the
				  building.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4532 - Blacksmith shops

Current through July 13, 2024
Blacksmith shops located on the surface shall be-
(a) At least 100 feet from fan installations
				  used for intake air and mine openings;
(b) Equipped with exhaust vents over the
				  forge and ventilated to prevent the accumulation of the products of combustion;
				  and
(c) Inspected for smoldering
				  fires at the end of each shift.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4533 - Mine opening vicinity

Current through July 13, 2024
Surface buildings or other similar structures within 100
					 feet of mine openings used for intake air or within 100 feet of mine openings
					 that are designated escapeways in exhaust air shall be-
(a) Constructed of noncombustible materials;
				  or
(b) Constructed to meet a fire
				  resistance rating of no less than one hour; or
(c) Provided with an automatic fire
				  suppression system; or
(d) Covered
				  on all combustible interior and exterior structural surfaces with
				  noncombustible material or limited combustible material, such as five-eighth
				  inch, type "X" gypsum wallboard.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4560 - Mine entrances

Current through July 13, 2024
For at least 200 feet inside the mine portal or collar
					 timber used for ground support in intake openings and in exhaust openings that
					 are designated as escapeways shall be-
(a) Provided with a fire suppression system,
				  other than fire extinguishers and water hoses, capable of controlling a fire in
				  its early stages; or
(b) Covered
				  with shotcrete, gunite, or other material with equivalent fire protection
				  characteristics; or
(c) Coated with
				  fire-retardant paint or other material to reduce its flame spread rating to 25
				  or less and maintained in that condition.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4561 - Stationary diesel equipment underground

Current through July 13, 2024
Stationary diesel equipment underground shall be-
(a) Supported on a noncombustible base;
				  and
(b) Provided with a thermal
				  sensor that automatically stops the engine if overheating occurs.
Welding/Cutting/Compressed Gases
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4600 - Extinguishing equipment

Current through July 13, 2024
(a) When welding,
				  cutting, soldering, thawing, or bending-
(1)
				  With an electric arc or with an open flame where an electrically conductive
				  extinguishing agent could create an electrical hazard, a multipurpose
				  dry-chemical fire extinguisher or other extinguisher with at least a 2-A:10-B:C
				  rating shall be at the worksite.
(2) With an open flame in an area where no
				  electrical hazard exists, a multipurpose dry-chemical fire extinguisher or
				  equivalent fire extinguishing equipment for the class of fire hazard present
				  shall be at the worksite.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4601 - Oxygen cylinder storage

Current through July 13, 2024
Oxygen cylinders shall not be stored in rooms or areas used
					 or designated for storage of flammable or combustible liquids, including
					 grease.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4602 - Gauges and regulators

Current through July 13, 2024
Gauges and regulators used with oxygen or acetylene
					 cylinders shall be kept clean and free of oil and grease.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4603 - Closure of valves

Current through July 13, 2024
To prevent accidental release of gases from hoses and
					 torches attached to oxygen and acetylene cylinders or to manifold systems,
					 cylinder or manifold system valves shall be closed when-
(a) The cylinders are moved;
(b) The torch and hoses are left unattended;
				  or
(c) The task or series of tasks
				  is completed.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4604 - Preparation of pipelines or containers

Current through July 13, 2024
Before welding, cutting, or applying heat with an open
					 flame to pipelines or containers that have contained flammable or combustible
					 liquids, flammable gases, or explosive solids, the pipelines or containers
					 shall be-
(a) Drained, ventilated, and
				  thoroughly cleaned of any residue;
(b) Vented to prevent pressure build-up
				  during the application of heat; and
(c)
(1)
				  Filled with an inert gas or water, where compatible; or
(2) Determined to be free of flammable gases
				  by a flammable gas detection device prior to and at frequent intervals during
				  the application of heat.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4660 - Work in shafts, raises, or winzes and other activities involving hazard areas

Current through July 13, 2024
During performance of an activity underground described in
					 Table C-2 or when falling sparks or hot metal from work performed in a shaft,
					 raise, or winze could pose a fire hazard-
(a) A multipurpose dry-chemical fire
				  extinguisher shall be at the worksite to supplement the fire extinguishing
				  equipment required by S 57.4600; and
(b) At least one of the following actions
				  shall be taken:
(1) Wet down the area before
				  and after the operation, taking precaution against any hazard of electrical
				  shock.
(2) Isolate any combustible
				  material with noncombustible material.
(3) Shield the activity so that hot metal and
				  sparks cannot cause a fire.
(4)
				  Provide a second person to watch for and extinguish any fire.
Table C-2
Activity
Distance
Fire hazard
Welding or cutting with an electric arc or open
								flame
Within 35 feet of-
More than 1 gallon of combustible liquid, unless in
								a closed, metal container.
Using an open flame to bend or heat materials
								electrically, except with heat tape
More than 50 pounds of non-fire-retardant More than
								10 pounds of combustible plastics.
Soldering or thawing with an open flame
Within 10 feet of-
Materials in a shaft, raise, or winze that hot
								metal or sparks.
(5) Cover or bulkhead the opening immediately
				  below and adjacent to the activity with noncombustible material to prevent
				  sparks or hot metal from falling down the shaft, raise, or winze. This
				  alternative applies only to activities involving a shaft, raise, or
				  winze.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4760 - Shaft mines

Current through July 13, 2024
(a) Shaft mines
				  shall be provided with at least one of the following means to control the
				  spread of fire, smoke, and toxic gases underground in the event of a fire:
				  control doors, reversal of mechanical ventilation, or effective evacuation
				  procedures. Under this standard, "shaft mine" means a mine in which any
				  designated escapeway includes a mechanical hoisting device or a ladder ascent.
(1) Control doors. If used as an alternative,
				  control doors shall be-
(i) Installed at or
				  near shaft stations of intake shafts and any shaft designated as an escapeway
				  under S 57.11053 or at other locations that provide equivalent
				  protection;
(ii) Constructed and
				  maintained according to Table C-3;
(iii) Provided with a means of remote closure
				  at landings of timbered intake shafts unless a person specifically designated
				  to close each door in the event of a fire can reach the door within three
				  minutes;
(iv) Closed or opened only
				  according to predetermined conditions and procedures;
(v) Constructed so that once closed they will
				  not reopen as a result of a differential in air pressure;
(vi) Constructed so that they can be opened
				  from either side by one person, or be provided with a personnel door that can
				  be opened from either side; and
(vii) Clear of obstructions.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Section 57.4761 - Underground shops

Current through July 13, 2024
To confine or prevent the spread of toxic gases from a fire
					 originating in an underground shop where maintenance work is routinely done on
					 mobile equipment, one of the following measures shall be taken: use of control
					 doors or bulkheads, routing of the mine shop air directly to an exhaust system,
					 reversal of mechanical ventilation, or use of an automatic fire suppression
					 system in conjunction with an alternate escape route. The alternative used
					 shall at all times provide at least the same degree of safety as control doors
					 or bulkheads.
(a) Control doors or
				  bulkheads. If used as an alternative, control doors or bulkheads shall meet the
				  following requirements:
(1) Each control door
				  or bulkhead shall be constructed to serve as a barrier to fire, the effects of
				  fire, and air leakage at each opening to the shop.
(2) Each control door shall be-
(i) Constructed so that, once closed, it will
				  not reopen as a result of a differential in air pressure;
(ii) Constructed so that it can be opened
				  from either side by one person or be provided with a personnel door that can be
				  opened from either side;
(iii)
				  Clear of obstructions; and
(iv)
				  Provided with a means of remote or automatic closure unless a person
				  specifically designated to close the door in the event of a fire can reach the
				  door within three minutes.
(3) If located 20 feet or more from exposed
				  timber or other combustible material, the control doors or bulkheads shall
				  provide protection at least equivalent to a door constructed of no less than
				  one-quarter inch of plate steel with channel or angle-iron reinforcement to
				  minimize warpage. The frame-work assembly of the door and the surrounding
				  bulkhead, if any, shall be at least equivalent to the door in fire and
				  air-leakage resistance, and in physical strength.
(4) If located less than 20 feet from exposed
				  timber or other combustibles, the control door or bulkhead shall provide
				  protection at least equivalent to a door constructed of two layers of wood,
				  each a minimum of three-quarters of an inch in thickness. The wood-grain of one
				  layer shall be perpendicular to the wood-grain of the other layer. The wood
				  construction shall be covered on all sides and edges with no less than 24-gauge
				  sheet steel. The framework assembly of the door and the surrounding bulkhead,
				  if any, shall be at least equivalent to the door in fire and air-leakage
				  resistance, and in physical strength. Roll-down steel doors with a
				  fire-resistance rating of 1 1/2 hours or greater, but without an insulation
				  core, are acceptable provided that an automatic sprinkler or deluge system is
				  installed that provides even coverage of the door on both sides.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart C - Fire Prevention and Control › Appendix I TO SUBPART C - NATIONAL CONSENSUS STANDARDS

Current through July 13, 2024
Mine operators seeking further information in the area of
					 fire prevention and control may consult the following national consensus
					 standards.
MSHA standard
National consensus standard
SS 57.4200, 57.4201, 57.4261, and 57.4262
NFPA No. 10-Portable Fire Extinguisher.
NFPA No. 11-Low Expansion Foam and Combined Agent
								Systems.
NFPA No. 11A-High Expansion Foam Systems.
NFPA No. 12-Carbon Dioxide Extinguishing
								Systems.
NFPA No. 12A-Halon 1301 Extinguishing
								Systems.
NFPA No. 13-Water Sprinkler Systems.
NFPA No. 14-Standpipe and Hose Systems.
NFPA No. 15-Water Spray Fixed Systems.
NFPA No. 16-Foam Water Spray Systems.
NFPA No. 17-Dry-Chemical Extinguishing
								Systems.
NFPA No. 121-Mobile Surface Mining
								Equipment.
NFPA No. 291-Testing and Marketing
								Hydrants.
NFPA No. 1962-Care, Use, and Maintenance of Fire
								Hose, Connections, and Nozzles.
S 57.4202
NFPA No. 14-Standpipe and Hose Systems. NFPA No.
								291-Testing and Marketing Hydrants.
S 57.4203
NFPA No. 10-Portable Fire Extinguishers.
S 57.4230
NFPA No. 10-Portable FireExtinguishers.
NFPA No. 121-Mobile Surface Mining
								Equipment.
S 57.4260
NFPA No. 10-Portable Fire Extinguishers.
S 57.4261
NFPA No. 14-Standpipe and Hose Systems.
S 57.4533
NFPA Fire Protection Handbook.
S 57.4560
ASTM E-162-Surface Flammability of Materials Using
								a Radiant Heat Energy Source.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5001 - Exposure limits for airborne contaminants

Current through July 13, 2024
Except as permitted by § 575005 -
(a) Except as provided in paragraph (b), the
				  exposure to airborne contaminants shall not exceed, on the basis of a time
				  weighted average, the threshold limit values adopted by the American Conference
				  of Governmental Industrial Hygienists, as set forth and explained in the 1973
				  edition of the Conference's publication, entitled "TLV's Threshold Limit Values
				  for Chemical Substances in Workroom Air Adopted by ACGIH for 1973," pages 1
				  through 54, which are hereby incorporated by reference and made a part hereof.
				  This publication may be obtained from the American Conference of Governmental
				  Industrial Hygienists by writing to the Secretary-Treasurer, P.O. Box 1937,
				  Cincinnati, Ohio 45201, or may be examined in any Metal and Nonmetal Mine
				  Safety and Health District or Subdistrict Office of the Mine Safety and Health
				  Administration. Excursions above the listed thresholds shall not be of a
				  greater magnitude than is characterized as permissible by the
				  Conference.
(b) The 8-hour
				  time-weighted average airborne concentration of asbestos dust to which
				  employees are exposed shall not exceed 2 fibers per milliliter greater than 5
				  microns in length, as determined by the membrane filter method at 400-450
				  magnification (4 millimeter objective) phase contrast illumination. No
				  employees shall be exposed at any time to airborne concentrations of asbestos
				  fibers in excess of 10 fibers longer than 5 micrometers, per milliliter of air,
				  as determined by the membrane filter methods over a minimum sampling time of 15
				  minutes. "Asbestos" is a generic term for a number of hydrated silicates that,
				  when crushed or processed, separate into flexible fibers made up of fibrils.
				  Although there are many asbestos minerals, the term "asbestos" as used herein
				  is limited to the following minerals: chrysotile, amosite, crocidolite,
				  anthophylite asbestos, tremolite asbestos, and actinolite asbestos.
(c) Employees shall be withdrawn from areas
				  where there is present an airborne contaminant given a "C" designation by the
				  Conference and the concentration exceeds the threshold limit value listed for
				  that contaminant.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5002 - Exposure monitoring

Current through July 13, 2024
Dust, gas, mist, and fume surveys shall be conducted as
					 frequently as necessary to determine the adequacy of control
					 measures.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5005 - Control of exposure to airborne contaminants

Current through July 13, 2024
Control of employee exposure to harmful airborne
					 contaminants shall be, insofar as feasible, by prevention of contamination,
					 removal by exhaust ventilation, or by dilution with uncontaminated air.
					 However, where accepted engineering control measures have not been developed or
					 when necessary by the nature of work involved (for example, while establishing
					 controls or occasional entry into hazardous atmospheres to perform maintenance
					 or investigation), employees may work for reasonable periods of time in
					 concentrations of airborne contaminants exceeding permissible levels if they
					 are protected by appropriate respiratory protective equipment. Whenever
					 respiratory protective equipment is used a program for selection, maintenance,
					 training, fitting, supervision, cleaning, and use shall meet the following
					 minimum requirements:
(a) Mine Safety
				  and Health Administration approved respirators which are applicable and
				  suitable for the purpose intended shall be furnished, and employees shall use
				  the protective equipment in accordance with training and instruction.
(b) A respirator program consistent with the
				  requirements of ANSI Z88.2-1969, published by the American National Standards
				  Institute and entitled "American National Standards Practices for Respiratory
				  Protection ANSI Z88.2-1969," approved August 11, 1969, which is hereby
				  incorporated by reference and made a part hereof. This publication may be
				  obtained from the American National Standards Institute, Inc., 1430 Broadway,
				  New York, New York 10018, or may be examined in any Metal and Nonmetal Mine
				  Safety and Health District or Subdistrict Office of the Mine Safety and Health
				  Administration.
(c) When
				  respiratory protection is used in atmospheres immediately harmful to life, the
				  presence of at least one other person with backup equipment and rescue
				  capability shall be required in the event of failure of the respiratory
				  equipment.
Approved by the Office of Management and Budget under
						control number 1219-0048
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5006 - Restricted use of chemicals

Current through July 13, 2024
The following chemical substances shall not be used or
					 stored except by competent persons under laboratory conditions approved by a
					 nationally recognized agency acceptable to the Secretary.
(a) Carbon tetrachloride,
(b) Phenol,
(c) 4-Nitrobiphenyl,
(d) Alpha-naphthylamine,
(e) 4,4-Methylene Bis
				  (2-chloroaniline),
(f)
				  Methyl-chloromethyl ether,
(g) 3,3
				  Dichlorobenzidine,
(h) Bis
				  (chloromethyl) ether,
(i)
				  Beta-napthylamine,
(j)
				  Benzidine,
(k)
				  4-Aminodiphenyl,
(l)
				  Ethyleneimine,
(m)
				  Beta-propiolactone,
(n)
				  2-Acetylaminofluorene,
(o)
				  4-Dimethylaminobenzene, and
(p)
				  N-Nitrosodimethylamine.
Air Quality-Underground Only
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5015 - Oxygen deficiency

Current through July 13, 2024
Air in all active workings shall contain at least 19.5
					 volume percent oxygen.
Radiation-Underground Only
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5037 - Radon daughter exposure monitoring

Current through July 13, 2024
(a) In all mines at
				  least one sample shall be taken in exhaust mine air by a competent person to
				  determine if concentrations of radon daughters are present. Sampling shall be
				  done using suggested equipment and procedures described in section 14.3 of ANSI
				  N13.8-1973, entitled "American National Standard Radiation Protection in
				  Uranium Mines," approved July 18, 1973, pages 13-15, by the American National
				  Standards Institute, Inc., which is incorporated by reference and made a part
				  of the standard or equivalent procedures and equipment acceptable to the
				  Administrator, Metal and Nonmetal Mine Safety and Health, Mine Safety and
				  Health Administration. This publication may be examined at any Metal and
				  Nonmetal Mine Safety and Health Subdistrict Office of the Mine Safety and
				  Health Administration, or may be obtained from the American National Standards
				  Institute, Inc., 1430 Broadway, New York, New York 10018. The mine operator may
				  request that the required exhaust mine air sampling be done by the Mine Safety
				  and Health Administration. If concentrations of radon daughters in excess of
				  0.1 WL are found in an exhaust air sample, thereafter-
(1) Where uranium is mined-radon daughter
				  concentrations representative of worker's breathing zone shall be determined at
				  least every two weeks at random times in all active working areas such as
				  stopes, drift headings, travelways, haulageways, shops, stations, lunch rooms,
				  magazines, and any other place or location where persons work, travel, or
				  congregate. However, if concentrations of radon daughters are found in excess
				  of 0.3 WL in an active working area, radon daughter concentrations thereafter
				  shall be determined weekly in that working area until such time as the weekly
				  determinations in that area have been 0.3 WL or less for 5 consecutive
				  weeks.
(2) Where uranium is not
				  mined-when radon daughter concentrations between 0.1 and 0.3 WL are found in an
				  active working area, radon daughter concentration measurements representative
				  of worker's breathing zone shall be determined at least every 3 months at
				  random times until such time as the radon daughter concentrations in that area
				  are below 0.1 WL, and annually thereafter. If concentrations of radon daughters
				  are found in excess of 0.3 WL in an active working area radon daughter
				  concentrations thereafter shall be determined at least weekly in that working
				  area until such time as the weekly determinations in that area have been 0.3 WL
				  or less for 5 consecutive weeks.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5038 - Annual exposure limits

Current through July 13, 2024
No person shall be permitted to receive an exposure in
					 excess of 4 WLM in any calendar year.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5039 - Maximum permissible concentration

Current through July 13, 2024
Except as provided by standard S 57.5005, persons shall not
					 be exposed to air containing concentrations of radon daughters exceeding 1.0 WL
					 in active workings.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5040 - Exposure records

Current through July 13, 2024
(a) The operator
				  shall calculate and record complete individual exposures to concentrations of
				  radon daughters as follows:
(1) Where uranium
				  is mined-the complete individual exposures of all mine personnel working
				  underground shall be calculated and recorded. These records shall include the
				  individual's time in each active working area such as stopes, drift headings,
				  travelways, haulageways, shops, stations, lunch rooms, magazines and any other
				  place or location where persons work, travel or congregate, and the
				  concentration of airborne radon daughters for each active working
				  area.
(2) Where uranium is not
				  mined-the complete individual exposure of all mine personnel working in active
				  working areas with radon daughter concentrations in excess of 0.3 WL shall be
				  calculated and recorded. These records shall include the individual's time in
				  each active working area and the concentrations of airborne radon daughters for
				  each active working area. The operator may discontinue calculating and
				  recording the individual exposures of any personnel assigned to work in active
				  working areas where radon daughter concentrations have been reduced to 0.3 WL
				  or less for 5 consecutive weeks provided that such exposure calculation and
				  recordation shall not be discontinued with respect to any person who has
				  accumulated more exposure than 1/12 (one-twelfth) of a WLM times the number of
				  months for which exposures have been calculated and recorded in the calendar
				  year in which the exposure calculation and recordation is proposed to be
				  discontinued.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5041 - Smoking prohibition

Current through July 13, 2024
Smoking shall be prohibited in all areas of a mine where
					 exposure records are required to be kept in compliance with standard
					 57.5040.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5042 - Revised exposure levels

Current through July 13, 2024
If levels of permissible exposures to concentrations of
					 radon daughters different from those prescribed in 57.5038 are recommended by
					 the Environmental Protection Agency and approved by the President, no employee
					 shall be permitted to receive exposures in excess of those levels after the
					 effective dates established by the Agency.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5044 - Respirators

Current through July 13, 2024
The wearing of respirators approved for protection against
					 radon daughters shall be required in environments exceeding 1.0 WL and
					 respirator use shall be in compliance with standard 57.5005.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5045 - Posting of inactive workings

Current through July 13, 2024
Inactive workings in which radon daughter concentrations
					 are above 1.0 WL, shall be posted against unauthorized entry and designated by
					 signs indicating them as areas in which approved respirators shall be
					 worn.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart D - Air Quality, Radiation, and Physical Agents Air Quality-Surface and Underground › Section 57.5046 - Protection against radon gas

Current through July 13, 2024
Where radon daughter concentrations exceed 10 WL,
					 respirator protection against radon gas shall be provided in addition to
					 protection against radon daughters. Protection against radon gas shall be
					 provided by supplied air devices or by face masks containing absorbent material
					 capable of removing both the radon and its daughters.