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 J - Travelways and Escapeways › Section 57.11050 - Escapeways and refuges

Current through July 13, 2024
(a) Every mine
				  shall have two or more separate, properly maintained escapeways to the surface
				  from the lowest levels which are so positioned that damage to one shall not
				  lessen the effectiveness of the others. A method of refuge shall be provided
				  while a second opening to the surface is being developed. A second escapeway is
				  recommended, but not required, during the exploration or development of an ore
				  body.
(b) In addition to separate
				  escapeways, a method of refuge shall be provided for every employee who cannot
				  reach the surface from his working place through at least two separate
				  escapeways within a time limit of one hour when using the normal exit method.
				  These refuges must be positioned so that the employee can reach one of them
				  within 30 minutes from the time he leaves his workplace.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11051 - Escape routes

Current through July 13, 2024
Escape routes shall be-
(a) Inspected at regular intervals and
				  maintained in safe, travelable condition; and
(b) Marked with conspicuous and easily read
				  direction signs that clearly indicate the ways of escape.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11052 - Refuge areas

Current through July 13, 2024
Refuge areas shall be-
(a) Of fire-resistant construction,
				  preferably in untimbered areas of the mine;
(b) Large enough to accommodate readily the
				  normal number of persons in the particular area of the mine;
(c) Constructed so they can be made gastight;
				  and
(d) Provided with compressed
				  air lines, waterlines, suitable handtools, and stopping materials.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11053 - Escape and evacuation plans

Current through July 13, 2024
A specific escape and evacuation plan and revisions thereof
					 suitable to the conditions and mining system of the mine and showing assigned
					 responsibilities of all key personnel in the event of an emergency shall be
					 developed by the operator and set out in written form. Within 45 calendar days
					 after promulgation of this standard a copy of the plan and revisions thereof
					 shall be available to the Secretary or his authorized representative. Also,
					 copies of the plan and revisions thereof shall be posted at locations
					 convenient to all persons on the surface and underground. Such a plan shall be
					 updated as necessary and shall be reviewed jointly by the operator and the
					 Secretary or his authorized representative at least once every six months from
					 the date of the last review. The plan shall include:
(a) Mine maps or diagrams showing directions
				  of principal air flow, location of escape routes and locations of existing
				  telephones, primary fans, primary fan controls, fire doors, ventilation doors,
				  and refuge chambers. Appropriate portions of such maps or diagrams shall be
				  posted at all shaft stations and in underground shops, lunchrooms, and
				  elsewhere in working areas where persons congregate;
(b) Procedures to show how the miners will be
				  notified of emergency;
(c) An
				  escape plan for each working area in the mine to include instructions showing
				  how each working area should be evacuated. Each such plan shall be posted at
				  appropriate shaft stations and elsewhere in working areas where persons
				  congregate;
(d) A fire fighting
				  plan;
(e) Surface procedure to
				  follow in an emergency, including the notification of proper authorities,
				  preparing rescue equipment, and other equipment which may be used in rescue and
				  recovery operations; and
(f) A
				  statement of the availability of emergency communication and transportation
				  facilities, emergency power and ventilation and location of rescue personnel
				  and equipment.
Approved by the Office of Management and Budget under
						control number 1219-0046
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11054 - Communication with refuge chambers

Current through July 13, 2024
Telephone or other voice communication shall be provided
					 between the surface and refuge chambers and such systems shall be independent
					 of the mine power supply.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11055 - Inclined escapeways

Current through July 13, 2024
Any portion of a designated escapeway which is inclined
					 more than 30 degrees from the horizontal and that is more than 300 feet in
					 vertical extent shall be provided with an emergency hoisting
					 facility.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11056 - Emergency hoists

Current through July 13, 2024
The procedure for inspection, testing and maintenance
					 required by standard 57.19120 shall be utilized at least every 30 days for
					 hoists designated as emergency hoists in any evacuation plan.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11058 - Check-in, check-out system

Current through July 13, 2024
Each operator of an underground mine shall establish a
					 check-in and check-out system which shall provide an accurate record of persons
					 in the mine. These records shall be kept on the surface in a place chosen to
					 minimize the danger of destruction by fire or other hazards. Every person
					 underground shall carry a positive means of being identified.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart J - Travelways and Escapeways › Section 57.11059 - Respirable atmosphere for hoist operators underground

Current through July 13, 2024
For the protection of operators of hoists located
					 underground which are part of the mine escape and evacuation plan required
					 under standard 57.11053, the hoist operator shall be provided with a respirable
					 atmosphere completely independent of the mine atmosphere. This independent
					 ventilation system shall convert, without contamination, to an approved and
					 properly maintained 2-hour self-contained breathing apparatus to provide a safe
					 means of escape for the hoist operator after the hoisting duties have been
					 completed as prescribed in the mine escape and evacuation plan for that hoist.
					 The hoist operator's independent ventilation system shall be provided by one of
					 the following methods:
(a) A suitable
				  enclosure equipped with a positive pressure ventilation system which may be
				  operated continuously or be capable of immediate activation from within the
				  enclosure during an emergency evacuation. Air for the enclosure's ventilation
				  system shall be provided in one of the following ways:
(1) Air coursed from the surface through a
				  borehole into the hoist enclosure directly or through a metal pipeline from
				  such borehole; or
(2) Air coursed
				  from the surface through metal duct work into the hoist enclosure, although
				  this duct work shall not be located in timber-supported active workings;
				  or
(3) Air supplied by air
				  compressors located on the surface and coursed through metal pipe into the
				  hoist enclosure.
A back-up system shall be provided for a hoist enclosure
					 ventilation system provided by either of the methods set forth in paragraphs
					 (a) (2) and (3) of this section. This back-up system shall consist of
					 compressed air stored in containers connected to the enclosure. This back-up
					 system shall provide and maintain a respirable atmosphere in the enclosure for
					 a period of time equal to at least twice the time necessary to complete the
					 evacuation of all persons designated to use that hoist as prescribed in the
					 mine escape and evacuation plan required under standard 57.11053; or
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12001 - Circuit overload protection

Current through July 13, 2024
Surface and Underground
Circuits shall be protected against excessive overloads by
					 fuses or circuit breakers of the correct type and capacity.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12002 - Controls and switches

Current through July 13, 2024
Electric equipment and circuits shall be provided with
					 switches or other controls. Such switches or controls shall be of approved
					 design and construction and shall be properly installed.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12003 - Trailing cable overload protection

Current through July 13, 2024
Individual overload protection or short circuit protection
					 shall be provided for the trailing cables of mobile
					 equipment.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12004 - Electrical conductors

Current through July 13, 2024
Electrical conductors shall be of a sufficient size and
					 current-carrying capacity to ensure that a rise in temperature resulting from
					 normal operations will not damage the insulating materials. Electrical
					 conductors exposed to mechanical damage shall be protected.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12005 - Protection of power conductors from mobile equipment

Current through July 13, 2024
Mobile equipment shall not run over power conductors, nor
					 shall loads be dragged over power conductors, unless the conductors are
					 properly bridged or protected.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12006 - Distribution boxes

Current through July 13, 2024
Distribution boxes shall be provided with a disconnecting
					 device for each branch circuit. Such disconnecting devices shall be equipped or
					 designed in such a manner that it can be determined by visual observation when
					 such a device is open and that the circuit is deenergized, and the distribution
					 box shall be labeled to show which circuit each device
					 controls.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12008 - Insulation and fittings for power wires and cables

Current through July 13, 2024
Power wires and cables shall be insulated adequately where
					 they pass into or out of electrical compartments. Cables shall enter metal
					 frames of motors, splice boxes, and electrical compartments only through proper
					 fittings. When insulated wires, other than cables, pass through metal frames,
					 the holes shall be substantially bushed with insulated
					 bushings.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12010 - Isolation or insulation of communication conductors

Current through July 13, 2024
Telephone and low-potential signal wire shall be protected,
					 by isolation or suitable insulation, or both, from contacting energized power
					 conductors or any other power source.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12011 - High-potential electrical conductors

Current through July 13, 2024
High-potential electrical conductors shall be covered,
					 insulated, or placed to prevent contact with low potential
					 conductors.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12013 - Splices and repairs of power cables

Current through July 13, 2024
Permanent splices and repairs made in power cables,
					 including the ground conductor where provided, shall be-
(a) Mechanically strong with electrical
				  conductivity as near as possible to that of the original;
(b) Insulated to a degree at least equal to
				  that of the original, and sealed to exclude moisture; and,
(c) Provided with damage protection as near
				  as possible to that of the original, including good bonding to the outer
				  jacket.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12014 - Handling energized power cables

Current through July 13, 2024
Power cables energized to potentials in excess of 150
					 volts, phase-to-ground, shall not be moved with equipment unless sleds or
					 slings, insulated from such equipment, are used. When such energized cables are
					 moved manually, insulated hooks, tongs, ropes, or slings shall be used unless
					 suitable protection for persons is provided by other means. This does not
					 prohibit pulling or dragging of cable by the equipment it powers when the cable
					 is physically attached to the equipment by suitable mechanical devices, and the
					 cable is insulated from the equipment in conformance with other standards in
					 this part.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12016 - Work on electrically-powered equipment

Current through July 13, 2024
Electrically powered equipment shall be deenergized before
					 mechanical work is done on such equipment. Power switches shall be locked out
					 or other measures taken which shall prevent the equipment from being energized
					 without the knowledge of the individuals working on it. Suitable warning
					 notices shall be posted at the power switch and signed by the individuals who
					 are to do the work. Such locks or preventive devices shall be removed only by
					 the persons who installed them or by authorized personnel.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12017 - Work on power circuits

Current through July 13, 2024
Power circuits shall be deenergized before work is done on
					 such circuits unless hot-line tools are used. Suitable warning signs shall be
					 posted by the individuals who are to do the work. Switches shall be locked out
					 or other measures taken which shall prevent the power circuits from being
					 energized without the knowledge of the individuals working on them. Such locks,
					 signs, or preventive devices shall be removed only by the person who installed
					 them or by authorized personnel.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12018 - Identification of power switches

Current through July 13, 2024
Principal power switches shall be labeled to show which
					 units they control, unless identification can be made readily by
					 location.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12019 - Access to stationary electrical equipment or switchgear

Current through July 13, 2024
Where access is necessary, suitable clearance shall be
					 provided at stationary electrical equipment or switchgear.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12020 - Protection of persons at switchgear

Current through July 13, 2024
Dry wooden platforms, insulating mats, or other
					 electrically-nonconductive material shall be kept in place at all switchboards
					 and power-control switches where shock hazards exist. However, metal plates on
					 which a person normally would stand and which are kept at the same potential as
					 the grounded, metal, non-current-carrying parts of the power switches to be
					 operated may be used.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12023 - Guarding electrical connections and resistor grids

Current through July 13, 2024
Electrical connections and resistor grids that are
					 difficult or impractical to insulate shall be guarded, unless protection is
					 provided by location.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12025 - Grounding circuit enclosures

Current through July 13, 2024
All metal enclosing or encasing electrical circuits shall
					 be grounded or provided with equivalent protection. This requirement does not
					 apply to battery-operated equipment.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12026 - Grounding transformer and switchgear enclosures

Current through July 13, 2024
Metal fencing and metal buildings enclosing transformers
					 and switchgear shall be grounded.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12028 - Testing grounding systems

Current through July 13, 2024
Continuity and resistance of grounding systems shall be
					 tested immediately after installation, repair, and modification; and annually
					 thereafter. A record of the resistance measured during the most recent test
					 shall be made available on a request by the Secretary or his duly authorized
					 representative and the State Mine Inspector.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12032 - Inspection and cover plates

Current through July 13, 2024
Inspection and cover plates on electrical equipment and
					 junction boxes shall be kept in place at all times except during testing or
					 repairs.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12034 - Guarding around lights

Current through July 13, 2024
Portable extension lights, and other lights that by their
					 location present a shock or burn hazard, shall be guarded.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12035 - Weatherproof lamp sockets

Current through July 13, 2024
Lamp sockets shall be of a weatherproof type where they are
					 exposed to weather or wet conditions that may interfere with illumination or
					 create a shock hazard.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12036 - Fuse removal or replacement

Current through July 13, 2024
Fuses shall not be removed or replaced by hand in an
					 energized circuit, and they shall not otherwise be removed or replaced in an
					 energized circuit unless equipment and techniques especially designed to
					 prevent electrical shock are provided and used for such
					 purpose.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12037 - Fuses in high-potential circuits

Current through July 13, 2024
Fuse tongs or hotline tools, shall be used when fuses are
					 removed or replaced in high-potential circuits.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12038 - Attachment of trailing cables

Current through July 13, 2024
Trailing cables shall be attached to machines in a suitable
					 manner to protect the cable from damage and to prevent strain on the electrical
					 connections.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12039 - Protection of surplus trailing cables

Current through July 13, 2024
Surplus trailing cables to shovels, cranes and similar
					 equipment shall be-
(a) Stored in
				  cable boats;
(b) Stored on reels
				  mounted on the equipment; or
(c)
				  Otherwise protected from mechanical damage.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12042 - Track bonding

Current through July 13, 2024
Both rails shall be bonded or welded at every joint and
					 rails shall be crossbonded at least every 200 feet if the track serves as the
					 return trolley circuit. When rails are moved, replaced, or broken bonds are
					 discovered, they shall be rebonded within three working
					 shifts.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12047 - Guy wires

Current through July 13, 2024
Guy wires of poles supporting high-voltage transmission
					 lines shall meet the requirements for grounding or insulator protection of the
					 National Electrical Safety Code, part 2, entitled "Safety Rules for the
					 Installation and Maintenance of Electric Supply and Communication Lines" (also
					 referred to as National Bureau of Standards Handbook 81, Nov. 1, 1961), and
					 Supplement 2 thereof issued March 1968, which are hereby incorporated by
					 reference and made a part hereof. These publications and documents may be
					 obtained from the Superintendent of Documents, U.S. Government Printing Office,
					 Washington, D.C. 20402, or may be examined in any Metal and Nonmetal Mine
					 Safety and Health District or Subdistrict Office of the Mine Safety and Health
					 Administration.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12048 - Communication conductors on power poles

Current through July 13, 2024
Telegraph, telephone, or signal wires shall not be
					 installed on the same crossarm with power conductors. When carried on poles
					 supporting powerlines, they shall be installed as specified by the National
					 Electrical Code.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12050 - Installation of trolley wires

Current through July 13, 2024
Trolley wires shall be installed at least seven feet above
					 rails where height permits, and aligned and supported to suitably control sway
					 and sag.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12053 - Circuits powered from trolley wires

Current through July 13, 2024
Ground wires for lighting circuits powered from trolley
					 wires shall be connected securely to the ground return circuit.
Surface Only
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12065 - Short circuit and lightning protection

Current through July 13, 2024
Powerlines, including trolley wires, and telephone circuits
					 shall be protected against short circuits and lightning.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12066 - Guarding trolley wires and bare powerlines

Current through July 13, 2024
Where metallic tools or equipment can come in contact with
					 trolley wires or bare powerlines, the lines shall be guarded or
					 deenergized.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12067 - Installation of transformers

Current through July 13, 2024
Transformers shall be totally enclosed, or shall be placed
					 at least 8 feet above the ground, or installed in a transformer house, or
					 surrounded by a substantial fence at least 6 feet high and at least 3 feet from
					 any energized parts, casings, or wiring.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12069 - Lightning protection for telephone wires and ungrounded conductors

Current through July 13, 2024
Each ungrounded conductor or telephone wire that leads
					 underground and is directly exposed to lightning shall be equipped with
					 suitable lightning arrestors of approved type within 100 feet of the point
					 where the circuit enters the mine. Lightning arrestors shall be connected to a
					 low resistance grounding medium on the surface and shall be separated from
					 neutral grounds by a distance of not less than 25 feet.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12071 - Movement or operation of equipment near high-voltage powerlines

Current through July 13, 2024
When equipment must be moved or operated near energized
					 high-voltage powerlines (other than trolley lines) and the clearance is less
					 than 10 feet, the lines shall be deenergized or other precautionary measures
					 shall be taken.
Underground Only
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12080 - Bare conductor guards

Current through July 13, 2024
Trolley wires and bare power conductors shall be guarded at
					 mantrip loading and unloading points, and at shaft stations. Where such trolley
					 wires and bare power conductors are less than 7 feet above the rail, they shall
					 be guarded at all points where persons work or pass regularly
					 beneath.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12081 - Bonding metal pipelines to ground return circuits

Current through July 13, 2024
All metal pipelines, 1,000 feet or more in length running
					 parallel to trolley tracks, that are used as a ground return circuit shall be
					 bonded to the return circuit rail at the ends of the pipeline and at intervals
					 not to exceed 500 feet.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12083 - Support of power cables in shafts and boreholes

Current through July 13, 2024
Power cables in shafts and boreholes shall be fastened
					 securely in such a manner as to prevent undue strain on the sheath, insulation,
					 or conductors.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12084 - Branch circuit disconnecting devices

Current through July 13, 2024
Disconnecting switches that can be opened safely under load
					 shall be provided underground at all branch circuits extending from primary
					 power circuits near shafts, adits, levels and boreholes.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12085 - Transformer stations

Current through July 13, 2024
Transformer stations shall be enclosed to prevent persons
					 from unintentionally or inadvertently contacting energized
					 parts.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12086 - Location of trolley wire

Current through July 13, 2024
Trolley and trolley feeder wire shall be installed opposite
					 the clearance side of haulageways. However, this standard does not apply where
					 physical limitations would prevent the safe installation or use of such trolley
					 and trolley feeder wire.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart K - Electricity › Section 57.12088 - Splicing trailing cables

Current through July 13, 2024
No splice, except a vulcanized splice or its equivalent,
					 shall be made in a trailing cable within 25 feet of the machine unless the
					 machine is equipped with a cable reel or other power feed cable
					 payout-retrieval system. However, a temporary splice may be made to move the
					 equipment for repair.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13001 - General requirements for boilers and pressure vessels

Current through July 13, 2024
All boilers and pressure vessels shall be constructed,
					 installed, and maintained in accordance with the standards and specifications
					 of the American Society of Mechanical Engineers Boiler and Pressure Vessel
					 Code.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13010 - Reciprocating-type air compressors

Current through July 13, 2024
(a)
				  Reciprocating-type air compressors rated over 10 horsepower shall be equipped
				  with automatic temperature-actuated shutoff mechanisms which shall be set or
				  adjusted to the compressor when the normal operating temperature is exceeded by
				  more than 25 percent.
(b) However,
				  this standard does not apply to reciprocating-type air compressors rated over
				  10 horsepower if equipped with fusible plugs that were installed in the
				  compressor discharge lines before November 15, 1979, and designed to melt at
				  temperatures at least 50 degrees below the flash point of the compressors'
				  lubricating oil.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13011 - Air receiver tanks

Current through July 13, 2024
Air receiver tanks shall be equipped with one or more
					 automatic pressure-relief valves. The total relieving capacity of the relief
					 valves shall prevent pressure from exceeding the maximum allowable working
					 pressure in a receiver tank by not more than 10 percent. Air receiver tanks
					 also shall be equipped with indicating pressure gages which accurately measure
					 the pressure within the air receiver tanks.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13012 - Compressor air intakes

Current through July 13, 2024
Compressor air intakes shall be installed to ensure that
					 only clean, uncontaminated air enters the compressors.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13015 - Inspection of compressed-air receivers and other unfired pressure vessels

Current through July 13, 2024
(a) Compressed-air receivers and other
				  unfired pressure vessels shall be inspected by inspectors holding a valid
				  National Board Commission and in accordance with the applicable chapters of the
				  National Board Inspection Code, a Manual for Boiler and Pressure Vessel
				  Inspectors, 1979. This code is incorporated by reference and made a part of
				  this standard. It may be examined at any Metal and Non-metal Mine Safety and
				  Health District Office of the Mine Safety and Health Administration, and may be
				  obtained from the publisher, the National Board of Boiler and Pressure Vessel
				  Inspectors, 1055 Crupper Avenue, Columbus, Ohio 43229.
(b) Records of inspections shall be kept in
				  accordance with requirements of the National Board Inspection Code, and the
				  records shall be made available to the Secretary or his authorized
				  representative and the State Mine Inspector.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13017 - Compressor discharge pipes

Current through July 13, 2024
Compressor discharge pipes where carbon build-up may occur
					 shall be cleaned periodically as recommended by the manufacturer, but no less
					 frequently than once every two years.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13019 - Pressure system repairs

Current through July 13, 2024
Repairs involving the pressure system of compressors,
					 receivers, or compressed-air-powered equipment shall not be attempted until the
					 pressure has been bled off.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13020 - Use of compressed air

Current through July 13, 2024
At no time shall compressed air be directed toward a
					 person. When compressed air is used, all necessary precautions shall be taken
					 to protect persons from injury.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13021 - High-pressure hose connections

Current through July 13, 2024
Except where automatic shutoff valves are used, safety
					 chains or other suitable locking devices shall be used at connections to
					 machines of high-pressure hose lines of 3/4-inch inside diameter or larger, and
					 between high-pressure hose lines of 3/4-inch inside diameter or larger, where a
					 connection failure would create a hazard.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart L - Compressed Air and Boilers › Section 57.13030 - Boilers

Current through July 13, 2024
(a) Fired pressure vessels (boilers) shall be
				  equipped with water level gauges, pressure gauges, automatic pressure-relief
				  valves, blowdown piping, and other safety devices approved by the American
				  Society of Mechanical Engineers to protect against hazards from overpressure,
				  flameouts, fuel interruptions and low water level, all as required by the
				  appropriate sections, chapters and appendices listed in paragraphs (b) (1) and
				  (2) of this section.
(b) These
				  gauges, devices and piping shall be designed, installed, operated, maintained,
				  repaired, altered, inspected, and tested by inspectors holding a valid National
				  Board Commission and in accordance with the following listed sections, chapters
				  and appendices:
(1) The ASME Boiler and
				  Pressure Vessel Code, 1977, published by the American Society of Mechanical
				  Engineers.
Section and Title
I Power Boilers.
II Material Specifications-Part A-Ferrous.
II Material Specifications-Part B-Non-ferrous.
II Material Specifications-Part C-Welding Rods, Electrodes,
					 and Filler Metals.
IV Heating Boilers
V Nondestructive Examination
VI Recommended Rules for Care and Operation of Heating
					 Boilers
VII Recommended Rules for Care of Power Boilers
(2) The National Board Inspection
				  Code, a Manual for Boiler and Pressure Vessel Inspectors, 1979, published by
				  the National Board of Boiler and Pressure Vessel Inspectors.
Chapter and Title
I Glossary of Terms
II Inspection of Boilers and Pressure Vessels
III Repairs and Alterations to Boiler and Pressure Vessels
					 by Welding
IV Shop Inspection of Boilers and Pressure Vessels
V Inservice Inspection of Pressure Vessels by
					 Authorized
Owner-User Inspection Agencies
Appendix and Title
A Safety and Safety Relief Valves
B Non-ASME Code Boilers and Pressure Vessels
C Storage of Mild Steel Covered Arc Welding
					 Electrodes
D-R National Board "R" (Repair) Symbol Stamp
D-VR National Board "VR" (Repair of Safety and Safety
					 Relief Valve) Symbol Stamp
D-VR1 Certificate of Authorization for Repair Symbol Stamp
					 for Safety and Safety Relief Valves
D-VR2 Outline of Basic Elements of Written Quality Control
					 System for Repairers of ASME Safety and Safety Relief Valves
D-VR3 Nameplate Stamping for "VR" E Owner-user Inspection
					 Agencies F Inspection Forms
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14000 - Definitions

Current through July 13, 2024
The following definitions apply in this subpart.
Mobile equipment. Wheeled, skid-mounted, track-mounted, or
					 rail-mounted equipment capable of moving or being moved.
Travelway. A passage, walk, or way regularly used or
					 designated for persons to go from one place to another.
Safety Devices and Maintenance
					 Requirements
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14100 - Safety defects; examination, correction and records

Current through July 13, 2024
(a) Self-propelled mobile equipment to be
				  used during a shift shall be inspected by the equipment operator before being
				  placed in operation on that shift.
(b) Defects on any equipment, machinery, and
				  tools that affect safety shall be corrected in a timely manner to prevent the
				  creation of a hazard to persons.
(c) When defects make continued operation
				  hazardous to persons, the defective items including self-propelled mobile
				  equipment shall be taken out of service and placed in a designated area posted
				  for that purpose, or a tag or other effective method of marking the defective
				  items shall be used to prohibit further use until the defects are
				  corrected.
(d) Defects on
				  self-propelled mobile equipment affecting safety, which are not corrected
				  immediately, shall be reported to, and recorded by, the mine operator. The
				  records shall be kept at the mine or nearest mine office from the date the
				  defects are recorded, until the defects are corrected. Such records shall be
				  made available for inspection by an authorized representative of the Secretary
				  and the State Mine Inspector.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14101 - Brakes

Current through July 13, 2024
(a) Minimum requirements.
(1) Self-propelled mobile equipment shall be
				  equipped with a service brake system capable of stopping and holding the
				  equipment with its typical load on the maximum grade it travels. This standard
				  does not apply to equipment which is not originally equipped with brakes unless
				  the manner in which the equipment is being operated requires the use of brakes
				  for safe operation. This standard does not apply to rail equipment.
(2) If equipped on self-propelled mobile
				  equipment, parking brakes shall be capable of holding the equipment with its
				  typical load on the maximum grade it travels.
(3) All braking systems installed on the
				  equipment shall be maintained in functional condition.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14103 - Operators' stations

Current through July 13, 2024
(a) If windows are
				  provided on operators' stations of self-propelled mobile equipment, the windows
				  shall be made of safety glass or material with equivalent safety
				  characteristics. The windows shall be maintained to provide visibility for safe
				  operation.
(b) If damaged windows
				  obscure visibility necessary for safe operation, or create a hazard to the
				  equipment operator, the windows shall be replaced or removed. Damaged windows
				  shall be replaced if absence of a window would expose the equipment operator to
				  hazardous environmental conditions which would affect the ability of the
				  equipment operator to safely operate the equipment.
(c) The operators' stations of self-propelled
				  mobile equipment shall-
(1) Be free of
				  materials that may create a hazard to persons by impairing the safe operation
				  of the equipment; and
(2) Not be
				  modified, in a manner that obscures visibility necessary for safe
				  operation.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14104 - Tire repairs

Current through July 13, 2024
(a) Before a tire
				  is removed from a vehicle for tire repair, the valve core shall be partially
				  removed to allow for gradual deflation and then removed. During deflation, to
				  the extent possible, persons shall stand outside of the potential trajectory of
				  the lock ring of a multi-piece wheel rim.
(b) To prevent injury from wheel rims during
				  tire inflation, one of the following shall be used:
(1) A wheel cage or other restraining device
				  that will constrain all wheel rim components during an explosive separation of
				  a multi-piece wheel rim, or during the sudden release of contained air in a
				  single piece rim wheel; or
(2) A
				  stand-off inflation device which permits persons to stand outside of the
				  potential trajectory of wheel components.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14105 - Procedures during repairs or maintenance

Current through July 13, 2024
Repairs or maintenance on machinery or equipment shall be
					 performed only after the power is off, and the machinery or equipment blocked
					 against hazardous motion. Machinery or equipment motion or activation is
					 permitted to the extent that adjustments or testing cannot be performed without
					 motion or activation, provided that persons are effectively protected from
					 hazardous motion.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14106 - Falling object protection

Current through July 13, 2024
(a) Fork-lift
				  trucks, front-end loaders, and bulldozers shall be provided with falling object
				  protective structures if used in an area where falling objects could create a
				  hazard to the operator.
(b) The
				  protective structure shall be capable of withstanding the falling object loads
				  to which it could be subjected.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 3 - UNDERGROUND METAL/NONMETAL MINES › Subpart M - Machinery and Equipment › Section 57.14107 - Moving machine parts

Current through July 13, 2024
(a) Moving machine
				  parts shall be guarded to protect persons from contacting gears, sprockets,
				  chains, drive, head, tail, and takeup pulleys, flywheels, coupling, shafts, fan
				  blades; and similar moving parts that can cause injury.
(b) Guards shall not be required where the
				  exposed moving parts are at least seven feet away from walking or working
				  surfaces.