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 T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22101 - Smoking (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Persons shall not smoke or carry smoking materials,
					 matches, or lighters underground. The operator shall institute a reasonable
					 program to assure that persons entering the mine do not carry such
					 items.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22102 - Smoking (I-C mines)

Current through July 13, 2024
(a) Persons shall
				  not smoke or carry smoking materials, matches, or lighters underground or
				  within 50 feet of a mine opening. The operator shall institute a reasonable
				  program to assure that persons entering the mine do not carry such
				  items.
(b) Smoking is prohibited in
				  surface milling facilities except in designated, dust-free smoking
				  areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22103 - Open flames (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Open flames shall not be permitted underground except for
					 welding, cutting, and other maintenance operations, and for igniting
					 underground retorts in a Subcategory I-A mine. When using open flames in other
					 than fresh air, or in places where methane may enter the air current, tests for
					 methane shall be conducted by a competent person before work is started and
					 every 10 minutes until the job is completed. Continuous methane monitors with
					 audible alarms may be used after the initial test has been conducted as an
					 alternative to the ten-minute interval testing requirement. Open flames shall
					 not be used in atmospheres containing 0.5 percent or more
					 methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22104 - Open flames (I-C mines)

Current through July 13, 2024
(a) Open flames,
				  including cutting and welding, shall not be used underground.
(b) Welding and cutting shall not be done
				  within 50 feet of a mine opening unless all persons are out of the mine and the
				  mine opening is covered. The cover shall be a substantial material, such as
				  metal or wood, topped with a layer of wetted material to prevent sparks and
				  flames from entering the mine opening.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22105 - Smoking and open flames (IV mines)

Current through July 13, 2024
Smoking or open flames shall not be permitted in a face or
					 raise, or during release of gas from a borehole until tests have been conducted
					 in accordance with S 57.22226 and the methane level has been determined to be
					 below 0.5 percent.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22106 - Dust containing volatile matter (I-C mines)

Current through July 13, 2024
Dust containing volatile matter shall not be allowed to
					 accumulate on the surfaces of enclosures, facilities, or equipment used in
					 surface milling in amounts that, if suspended in air, would become an explosive
					 mixture. An explosive mixture of dust containing volatile matter is 0.02 ounce
					 or more per cubic foot of air.
Ventilation
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22201 - Mechanical ventilation (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines)

Current through July 13, 2024
All mines shall be ventilated
					 mechanically.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22202 - Main fans (I-A, I-B, I-C, II-A, III, V-A, and V-B mines)

Current through July 13, 2024
(a) Main fans shall be-
(1) Installed on the surface in
				  noncombustible housings provided with noncombustible air ducts;
(2) Except in Subcategory I-A mines, provided
				  with an automatic signal device to give an alarm when the fan stops. The signal
				  device shall be located so that it can be seen or heard by a person designated
				  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 T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22203 - Main fan operation (I-C mines)

Current through July 13, 2024
Main fans shall be operated continuously while ore
					 production is in progress.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22204 - Main fan operation and inspection (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Main fans shall be-
(a) Provided with a pressure-recording
				  system; and
(b) Inspected daily
				  while operating if persons are underground. Certification of inspections shall
				  be made by signature and date. Certifications and pressure recordings shall be
				  retained for at least one year and made available to an authorized
				  representative of the Secretary and the State Mine Inspector.
Approved by the Office of Management and Budget under
						control number 1219-0030
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22205 - Doors on main fans (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
In mines ventilated by multiple main fans, each main fan
					 installation shall be equipped with noncombustible doors. Such doors shall
					 automatically close to prevent air reversal through the fan. The doors shall be
					 located so that they are not in direct line with explosive forces which could
					 come out of the mine.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22206 - Main ventilation failure (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
(a) When there has been a main ventilation
				  failure, such as stoppage of main fans or failure of other components of the
				  main ventilation system, tests for methane shall be conducted in affected
				  active workings until normal air flow has resumed.
(b) If a total failure of ventilation occurs
				  while all persons are out of the mine and the failure lasts for more than 30
				  minutes, only competent persons shall be allowed underground to examine the
				  mine or to make necessary ventilation changes. Other persons may reenter the
				  mine after the main fans have been operational for at least 30 minutes, or
				  after the mine atmosphere has been tested and contains less than 1.0 percent
				  methane. Persons other than examiners shall not reenter a Subcategory II-A mine
				  until the methane level is less than 0.5 percent.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22207 - Booster fans (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
(a) Booster
				  fans shall be approved by MSHA under the applicable requirements of 30 CFR part
				  18, and be-
(1) Provided with an automatic
				  signal device located so that it can be seen or heard by a person designated by
				  the mine operator to give an alarm when the fan stops or when methane reaches
				  the following levels:
(i) 1.0 percent at the
				  fan in Subcategory I-A, Category III, and Subcategory V-A mines; and
(ii) 0.5 percent at the fan in Subcategory
				  II-A mines.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22208 - Auxiliary fans (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
(a)
				  Auxiliary fans, except fans used in shops and other areas which have been so
				  designed that methane cannot enter the airway, shall be approved by MSHA under
				  the applicable requirements of 30 CFR part 18, and be operated so that
				  recirculation is minimized. Auxiliary fans shall not be used to ventilate work
				  places during the interruption of normal mine ventilation.
(b) Tests for methane shall be made at
				  auxiliary fans before they are started.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22209 - Auxiliary fans (I-C mines)

Current through July 13, 2024
Electric auxiliary fans shall be approved by MSHA under the
					 applicable requirements of 30 CFR part 18. Tests for methane shall be made at
					 electric auxiliary fans before they are started. Such fans shall not be
					 operated when air passing over or through them contains 0.5 percent or more
					 methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22210 - In-line filters (I-C mines)

Current through July 13, 2024
Filters or separators shall be installed on air-lift fan
					 systems to prevent explosive concentrations of dust from passing through the
					 fan.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22211 - Air flow (I-A mines)

Current through July 13, 2024
The average air velocity in the last open crosscut in pairs
					 or sets of developing entries, or through other ventilation openings nearest
					 the face, shall be at least 40 feet per minute. The velocity of air ventilating
					 each face at a work place shall be at least 20 feet per
					 minute.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22212 - Air flow (I-C, II-A, and V-A mines)

Current through July 13, 2024
Air flow across each working face shall be sufficient to
					 carry away any accumulation of methane, smoke, fumes, and
					 dust.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22213 - Air flow (III mines)

Current through July 13, 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 per minute, or 9,000 cubic feet per
					 minute in longwall and continuous miner sections. The quantity of air across
					 each face at a work place shall be at least 2,000 cubic feet per
					 minute.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22214 - Changes in ventilation (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
(a) Changes in ventilation which affect the
				  main air current or any split thereof and which adversely affect the safety of
				  persons in the mine shall be made only when the mine is idle.
(b) Only persons engaged in making such
				  ventilation changes shall be permitted in the mine during changes.
(c) Power shall be deenergized in affected
				  areas prior to making ventilation changes, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18. Power shall
				  not be restored until the results of the change have been determined and a
				  competent person has examined affected working places for methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22215 - Separation of intake and return air (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Main intake and return air currents shall be coursed
					 through separate mine openings and shall be separated throughout the mine,
					 except-
(a) Where multiple shafts are
				  used for ventilation and a single shaft contains a curtain wall or partition
				  for separation of air currents. Such wall or partition shall be constructed of
				  reinforced concrete or other noncombustible equivalent, and provided with
				  pressure-relief devices.
(b) During
				  development of openings to the surface-
(1)
				  Ventilation tubing approved by MSHA in accordance with 30 CFR part 7 or
				  previously issued a BC or VT acceptance number by the MSHA Approval and
				  Certification Center may be used for separation of main air currents in the
				  same opening. Flexible ventilation tubing shall not exceed 250 feet in
				  length.
(2) Only development
				  related to making a primary ventilation connection may be performed beyond 250
				  feet of the shaft.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22216 - Separation of intake and return air (I-C mines)

Current through July 13, 2024
The main intake and return air currents in single shafts
					 shall be separated by ventilation tubing, curtain walls, or partitions.
					 Ventilation tubing shall be constructed of noncombustible material. Curtain
					 walls or partitions shall be constructed of reinforced concrete or other
					 noncombustible equivalent, and provided with pressure-relief
					 devices.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22217 - Seals and stoppings (I-A, I-B, and I-C mines)

Current through July 13, 2024
All seals, and those stoppings that separate main intake
					 from main return airways, shall be of substantial construction and constructed
					 of noncombustible materials, except that stoppings constructed of brattice
					 materials may be used in face areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22218 - Seals and stoppings (III, V-A, and V-B mines)

Current through July 13, 2024
(a) All
				  seals, and those stoppings that separate main intake from main return airways,
				  shall be of substantial construction, except that stoppings constructed of
				  brattice materials may be used in face areas.
(b) Exposed surfaces on the intake side of
				  stoppings constructed of combustible materials or foam-type blocks shall be
				  coated with at least one inch of construction plaster containing perlite and
				  gypsum; at least one inch of expanded vermiculite, Portland cement and
				  limestone; or other coatings with equivalent fire resistance. Stoppings
				  constructed to phenolic foam blocks at least 12 inches thick need not be coated
				  for fire resistance. All foam-type blocks used for stopping construction shall
				  be solid.
(c) Exposed surfaces on
				  the fresh air side of seals constructed of combustible materials shall be
				  coated with at least one inch of construction plaster containing perlite and
				  gypsum; at least one inch of expanded vermiculite, Portland cement and
				  limestone; or other coatings with equivalent fire resistance. Foam-type blocks
				  shall not be used for seals.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22219 - Seals and stoppings (II-A mines)

Current through July 13, 2024
(a) Exposed
				  surfaces on the intake side of stoppings constructed of combustible materials,
				  except brattice, shall be coated with at least one inch of construction plaster
				  containing perlite and gypsum; at least one inch of expanded vermiculite,
				  Portland cement and limestone; or other coatings with equivalent fire
				  resistance.
(b) Seals shall be of
				  substantial construction. Exposed surfaces on the fresh air side of seals
				  constructed of combustible materials shall be coated with at least one inch of
				  construction plaster containing perlite and gypsum; at least one inch of
				  expanded vermiculite, Portland cement and limestone; or other coatings with
				  equivalent fire resistance. Foam-type blocks shall not be used for
				  seals.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22220 - Air passing unsealed areas (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Air that has passed by or through unsealed abandoned or
					 unsealed inactive areas and contains 0.25 percent or more methane shall-
(a) Be coursed directly to a return
				  airway;
(b) Be tested daily for
				  methane by a competent person; and
(c) Not be used to ventilate work
				  places.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22221 - Overcast and undercast construction (I-A, II-A, III, and V-A mines)

Current through July 13, 2024
Overcasts and undercasts shall be-
(a) Of substantial construction;
(b)
(1)
				  Constructed of noncombustible materials; or
(2) Where constructed of combustible
				  materials, the outside surfaces shall be coated with at least one inch of
				  construction plaster containing perlite and gypsum; at least one inch of
				  expanded vermiculite, Portland cement and limestone; or other coatings with
				  equivalent fire resistance;
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22222 - Ventilation materials (I-A, I-B, I-C, II-A, III, V-A, and V-B mines)

Current through July 13, 2024
Brattice cloth and ventilation tubing shall be approved by
					 MSHA in accordance with 30 CFR part 7, or shall bear a BC or VT acceptance
					 number issued by the MSHA Approval and Certification Center.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22223 - Crosscuts before abandonment (III mines)

Current through July 13, 2024
A means of ventilating faces shall be provided before
					 workings are abandoned in unsealed areas, unless crosscuts are provided within
					 30 feet of the face.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22224 - Auxiliary equipment stations (I-A and III mines)

Current through July 13, 2024
Battery charging stations, compressor stations, pump
					 stations, and transformer stations shall be installed in intake air at
					 locations which are sufficiently ventilated to prevent the accumulation of
					 methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22225 - Auxiliary equipment stations (I-C mines)

Current through July 13, 2024
Battery charging stations, compressor stations, and
					 electrical substations shall not be installed underground or within 50 feet of
					 a mine opening.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22226 - Testing for methane (IV mines)

Current through July 13, 2024
Tests for methane shall be conducted in the mine atmosphere
					 by a competent person-
(a) At least
				  once each shift prior to starting work in each face and raise; and
(b) Upon initial release of gas into the mine
				  atmosphere from boreholes.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22227 - Approved testing devices (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines)

Current through July 13, 2024
(a) Methane
				  monitoring devices and portable, battery-powered, self-contained devices used
				  for measuring methane, other gases, and contaminants in mine air shall be
				  approved by MSHA under the applicable requirements of 30 CFR parts 18, 21, 22,
				  23, 27, and 29. Such devices shall be maintained in accordance with
				  manufacturers' instructions, or an equivalent maintenance and calibration
				  procedure.
(b)
(1) Flame safety lamps shall not be used to
				  test for methane except as supplementary devices.
(2) Flame safety lamps shall not be used in
				  Subcategory I-C mines.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22228 - Preshift examination (I-A, I-C, II-A, III, and V-A mines)

Current through July 13, 2024
(a) Preshift examinations shall be conducted
				  within three hours prior to the start of the shift for which the examination is
				  being made.
(b) Prior to the
				  beginning of a shift following an idle shift, a competent person shall test the
				  mine atmosphere for methane at all work places before persons other than
				  examiners enter the mine.
(c) When
				  one shift immediately follows another, a competent person shall test the mine
				  atmosphere at each active working face for methane before work is started on
				  that shift.
(d) A competent person
				  shall test the mine atmosphere at each face blasted before work is
				  started.
(e) Except in Subcategory
				  I-C or Category III mines, vehicles used for transportation when examining the
				  mine shall be approved by MSHA under the applicable requirements of 30 CFR
				  parts 18 through 36.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22229 - Weekly testing (I-A, III, and V-A mines)

Current through July 13, 2024
(a) The
				  mine atmosphere shall be tested for methane and carbon monoxide at least once
				  every seven days by a competent person or an atmospheric monitoring system, or
				  a combination of the two. Such testing shall be done at the following
				  locations:
(1) The return of each split where
				  it enters the main return;
(2)
				  Adjacent to retreat areas, if accessible;
(3) At least one seal of each sealed area, if
				  accessible;
(4) Main
				  returns;
(5) At least one entry of
				  each intake and return;
(6) Idle
				  workings; and
(7) Return air from
				  unsealed abandoned workings.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22230 - Weekly testing (II-A mines)

Current through July 13, 2024
(a) The mine
				  atmosphere shall be tested for methane at least once every seven days by a
				  competent person or an atmospheric monitoring system, or a combination of the
				  two. Such testing shall be done at the following locations:
(1) Active mining faces and
				  benches;
(2) Main
				  returns;
(3) Returns from idle
				  workings;
(4) Returns from
				  abandoned workings; and
(5)
				  Seals.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22231 - Actions at 0.25 percent methane (I-B, II-B, V-B, and VI mines)

Current through July 13, 2024
If methane reaches 0.25 percent in the mine atmosphere,
					 changes shall be made to improve ventilation, and MSHA and the State Mine
					 Inspector shall be notified immediately.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22232 - Actions at 0.5 percent methane (I-B, II-A, II-B, IV, V-B, and VI mines)

Current through July 13, 2024
If methane reaches 0.5 percent in the mine atmosphere,
					 ventilation changes shall be made to reduce the level of methane. Until methane
					 is reduced to less than 0.5 percent, electrical power shall be deenergized in
					 affected areas, except power to monitoring equipment determined by MSHA to be
					 intrinsically safe under 30 CFR part 18. Diesel equipment shall be shut off or
					 immediately removed from the area and no other work shall be permitted in
					 affected areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22233 - Actions at 0.5 percent methane (I-C mines)

Current through July 13, 2024
If methane reaches 0.5 percent in the mine atmosphere,
					 ventilation changes shall be made to reduce the level of methane. Until methane
					 is reduced to less than 0.5 percent, no other work shall be permitted in
					 affected areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22234 - Actions at 1.0 percent methane (I-A, I-B, III, V-A, and V-B mines)

Current through July 13, 2024
(a) If methane reaches 1.0 percent in the
				  mine atmosphere, ventilation changes shall be made to reduce the methane. Until
				  such changes are achieved-
(1) All persons
				  other than competent persons necessary to make the ventilation changes shall be
				  withdrawn from affected areas;
(2)
				  Electrical power shall be deenergized in affected areas, except power to
				  monitoring equipment determined by MSHA to be intrinsically safe under 30 CFR
				  part 18; and
(3) Diesel equipment
				  shall be shut off or immediately removed from the area.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22235 - Actions at 1.0 percent methane (I-C, II-A, II-B, and IV mines)

Current through July 13, 2024
(a) If methane reaches 1.0 percent in the
				  mine atmosphere, all persons other than competent persons necessary to make
				  ventilation changes shall be withdrawn from affected areas until methane is
				  reduced to less than 0.5 percent.
(b) If methane reaches 1.0 percent at a work
				  place and there has been a failure of the main ventilation system, all persons
				  shall be withdrawn from the mine.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22236 - Actions at 1.0 percent methane (VI mines)

Current through July 13, 2024
If methane reaches 1.0 percent in the mine atmosphere, all
					 persons other than competent persons necessary to make ventilation changes
					 shall be withdrawn from affected areas until methane is reduced to less than
					 0.5 percent.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22237 - Actions at 2.0 to 2.5 percent methane in bleeder systems (I-A and III mines)

Current through July 13, 2024
If methane reaches 2.0 percent in bleeder systems at the
					 point where a bleeder split enters a main return split, mining shall not be
					 permitted on ventilation splits affected by the bleeder system. If methane has
					 not been reduced to less than 2.0 percent within 30 minutes, or if methane
					 levels reach 2.5 percent, all persons other than competent persons necessary to
					 take corrective action shall be withdrawn from affected
					 areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22238 - Actions at 2.0 percent methane (I-B, II-B, V-B, and VI mines)

Current through July 13, 2024
If methane reaches 2.0 percent in the mine atmosphere, all
					 persons other than competent persons necessary to make ventilation changes
					 shall be withdrawn from the mine until methane is reduced to less than 0.5
					 percent.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22239 - Actions at 2.0 percent methane (IV mines)

Current through July 13, 2024
If methane reaches 2.0 percent in the mine atmosphere, all
					 persons other than competent persons necessary to make ventilation changes
					 shall be withdrawn from the mine until methane is reduced to less than 0.5
					 percent. MSHA and the State Mine Inspector shall be notified
					 immediately.
Approved by the Office of Management and Budget under
						control number 1219-0103
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22240 - Actions at 2.0 percent methane (V-A mines)

Current through July 13, 2024
If methane reaches 2.0 percent in the mine atmosphere, all
					 persons other than competent persons necessary to make ventilation changes
					 shall be withdrawn from affected areas until methane is reduced to less than
					 1.0 percent.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22241 - Advance face boreholes (I-C mines)

Current through July 13, 2024
(a) Boreholes shall
				  be drilled at least 25 feet in advance of a face whenever the work place is
				  within-
(1) 50 feet of a surveyed abandoned
				  mine or abandoned workings which cannot be inspected; or
(2) 200 feet of an unsurveyed abandoned mine
				  or abandoned workings which cannot be inspected.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22301 - Atmospheric monitoring systems (I-A, II-A, and V-A mines)

Current through July 13, 2024
(a) An atmospheric monitoring system shall be
				  installed to provide surface readings of methane concentrations in the mine
				  atmosphere from underground locations. Components of the system shall be
				  approved by MSHA under the applicable requirements of 30 CFR parts 18, 22, 23,
				  and 27; or be determined by MSHA under 30 CFR part 18 to be intrinsically safe
				  or explosion-proof.
(b) Atmospheric
				  monitoring systems shall-
(1) Give warnings
				  on the surface and underground when methane at any sensor reaches 0.5 percent
				  or more, and when power to a sensor is interrupted. Warning devices shall be
				  located so that they can be seen and heard by a person designated by the mine
				  operator; and
(2) Automatically
				  deenergize power in affected areas, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18, when methane
				  at any sensor reaches-
(i) 1.0 percent in a
				  Subcategory I-A or V-A mine; or
(ii) 0.5 percent while persons are
				  underground and 1.0 percent during blasting in a Subcategory II-A mine. Timing
				  devices are permitted to avoid nuisance tripping for periods not to exceed 30
				  seconds, except during blasting or the ventilation time following a blast in a
				  Subcategory II-A mine.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22302 - Approved equipment (I-A and V-A mines)

Current through July 13, 2024
Equipment used in or beyond the last open crosscut shall be
					 approved by MSHA under the applicable requirements of 30 CFR parts 18 through
					 36. Equipment shall not be operated in atmospheres containing 1.0 percent or
					 more methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22303 - Approved equipment (I-C mines)

Current through July 13, 2024
Only electrical equipment that is approved by MSHA under
					 the applicable requirements of 30 CFR parts 18 through 29, shall be used
					 underground, except for submersible sump pumps.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22304 - Approved equipment (II-A mines)

Current through July 13, 2024
(a) Cutting and
				  drilling equipment used at a face or bench shall be approved by MSHA under the
				  applicable requirements of 30 CFR parts 18 through 36.
(b) While cutting or drilling is in progress,
				  equipment not approved by MSHA under the applicable requirements of 30 CFR
				  parts 18 through 36 shall remain at least 100 feet from the face or bench being
				  mined.
(c) Tests for methane shall
				  be conducted immediately before nonapproved equipment is taken to a face or
				  bench after blasting.
(d) Mine
				  power transformers and stationary equipment not approved by MSHA under the
				  applicable requirements of 30 CFR parts 18 through 36 shall be installed in
				  fresh air or downwind from an atmospheric methane monitor sensor.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22305 - Approved equipment (III mines)

Current through July 13, 2024
Equipment used in or beyond the last open crosscut and
					 equipment used in areas where methane may enter the air current, such as pillar
					 recovery workings, longwall faces and shortwall faces, shall be approved by
					 MSHA under the applicable requirements of 30 CFR parts 18 through 36. Equipment
					 shall not be operated in atmospheres containing 1.0 percent or more
					 methane.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22306 - Methane monitors (I-A mines)

Current through July 13, 2024
(a) Methane
				  monitors shall be installed on continuous mining machines, longwall mining
				  systems, and on loading and haulage equipment used in or beyond the last open
				  crosscut.
(b) The monitors shall-
(1) Give warning at 1.0 percent
				  methane;
(2) Automatically
				  deenergize electrical equipment, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent
				  starting such equipment when methane levels reach 1.5 percent. Diesel equipment
				  shall be shut off or immediately removed from the affected area; and
(3) Automatically deenergize electrical
				  equipment when power to a sensor is interrupted. Diesel equipment shall not be
				  operated if the monitor is inoperative.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22307 - Methane monitors (II-A mines)

Current through July 13, 2024
(a) Methane
				  monitors shall be installed on continuous mining machines, longwall mining
				  systems, bench and face drills, and undercutting machines used in or beyond the
				  last open crosscut.
(b) The
				  monitors shall-
(1) Give warning at 0.5
				  percent methane;
(2) Automatically
				  deenergize electrical equipment, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent
				  starting such equipment when methane levels reach 1.0 percent; and
(3) Automatically deenergize the equipment
				  when power to a sensor is interrupted.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22308 - Methane monitors (III mines)

Current through July 13, 2024
(a) Methane
				  monitors shall be installed on continuous mining machines and longwall mining
				  systems.
(b) The monitors shall-
(1) Give warning at 1.0 percent
				  methane;
(2) Automatically
				  deenergize electrical equipment, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent
				  starting such equipment when methane levels reach 1.5 percent; and
(3) Automatically deenergize the equipment
				  when power to a sensor is interrupted.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22309 - Methane monitors (V-A mines)

Current through July 13, 2024
(a) Methane
				  monitors shall be installed on continuous mining machines used in or beyond the
				  last open crosscut.
(b) The
				  monitors shall-
(1) Give warning at 1.0
				  percent methane.
(2) Automatically
				  deenergize electrical equipment, except power to monitoring equipment
				  determined by MSHA to be intrinsically safe under 30 CFR part 18, and prevent
				  starting of such equipment when methane levels reach 1.5 percent; and
(3) Automatically deenergize the equipment
				  when power to a sensor is interrupted.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22310 - Electrical cables (I-C mines)

Current through July 13, 2024
Electrical cables used to power submersible sump pumps
					 shall be accepted or approved by MSHA as flame-resistant, or be installed in
					 continuous metal conduit or metal pipe. The ends of such conduitor pipe shall
					 be sealed to prevent entry of explosive gas or dust.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22311 - Electrical cables (II-A mines)

Current through July 13, 2024
Only jacketed electrical cables, which are accepted or
					 approved by MSHA as flame-resistant, shall be used to supply power to
					 distribution boxes and electrical equipment operating in face and bench
					 areas.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22312 - Distribution boxes (II-A and V-A mines)

Current through July 13, 2024
Distribution boxes containing short circuit protection for
					 trailing cables of approved equipment shall be approved by MSHA under 30 CFR
					 part 18.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22313 - Explosion-protection systems (I-C mines)

Current through July 13, 2024
Pressure-relief systems including vents, or explosion
					 suppression systems, shall be provided on explosive dust handling and
					 processing equipment and on facilities housing such equipment. Vents shall be
					 installed so that forces are directed away from persons should an explosion
					 occur. The ratio of vent size to internal size of the equipment or facility
					 shall not be less than one square foot of vent for each 80 cubic feet of volume
					 or space.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22314 - Flow-control devices (V-A and V-B mines)

Current through July 13, 2024
Oil recovery drill holes that penetrate oil bearing
					 formations shall have devices to control the release of liquid hydrocarbons and
					 hazardous gases during the drilling process. Such devices may be recovered for
					 reuse after the formation has been depressurized or the well or borehole has
					 been capped or connected to a collection system.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22315 - Self-contained breathing apparatus (V-A mines)

Current through July 13, 2024
Self-contained breathing apparatus of a duration to allow
					 for escape from the mine and sufficient in number to equip all persons
					 underground shall be strategically located throughout the mine. Such apparatus
					 shall be approved by MSHA under the applicable requirements of 30 CFR part 11,
					 and shall be maintained in accordance with manufacturers' specifications. This
					 standard does not apply to double entry mining systems where crosscut intervals
					 do not exceed 250 feet.
Underground Retorts
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22401 - Underground retorts (I-A and I-B mines)

Current through July 13, 2024
(a) Retorts shall
				  be provided with-
(1) Two independent power
				  sources for main mine ventilation fans and those fans directly ventilating
				  retort bulkheads, and for retort blowers, and provisions for switching promptly
				  from one power source to the other; and
(2) An alarm system for blower malfunctions
				  and an evacuation plan to assure safety of personnel in the event of a
				  failure.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart T - Safety Standards for Methane in Metal and Nonmetal Mines › Section 57.22501 - Personal electric lamps (I-A, I-B, I-C, II-A, II-B, III, IV, V-A, and V-B mines)

Current through July 13, 2024
Electric lamps used for personal illumination shall be
					 approved by MSHA under the requirements of 30 CFR parts 19 or 20, as
					 applicable.
Explosives