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 57.22601 - Blasting from the surface (I-A mines)

Current through July 13, 2024
(a) All
				  development, production, and bench rounds shall be initiated from the surface
				  after all persons are out of the mine. Persons shall not enter the mine until
				  ventilating air has passed over the blast area and through at least one
				  atmospheric monitoring sensor.
(b)
				  After blasting, if the monitoring system indicates that methane in the mine is
				  less than 1.0 percent, persons may enter the mine. All places blasted shall be
				  tested for methane by a competent person before work is started.
(c) If the monitoring system indicates the
				  presence of 1.0 percent or more methane, persons other than examiners shall not
				  enter the mine until the mine has been examined by a competent person and the
				  methane content has been reduced to less than 1.0 percent.
(d) 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 57.22602 - Blasting from the surface (I-C mines)

Current through July 13, 2024
(a) All blasting
				  shall be initiated from the surface after all persons are out of the mine and
				  any connecting mines.
(b) Persons
				  shall not enter the mine until a competent person has examined the blast sites
				  and methane concentrations are 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 57.22603 - Blasting from the surface (II-A mines)

Current through July 13, 2024
(a) All
				  development, production, and bench rounds shall be initiated from the surface
				  after all persons are out of the mine. Persons shall not enter the mine until
				  the mine has been ventilated for at least 15 minutes and the ventilating air
				  has passed over the blast area and through at least one atmospheric monitoring
				  sensor.
(b) If the monitoring
				  system indicates that methane in the mine is less than 0.5 percent, competent
				  persons may enter the mine to test for methane in all blast areas.
(c) If the monitoring system indicates that
				  methane in the mine is 0.5 percent or more, the mine shall be ventilated and
				  persons shall not enter the mine until the monitoring system indicates that
				  methane in the mine is less than 0.5 percent.
(d) If the monitoring system is inoperable or
				  malfunctions, the mine shall be ventilated for at least 45 minutes and the mine
				  power shall be deenergized before persons enter the mine. Only competent
				  persons necessary to test for methane may enter the mine until the methane in
				  the mine is less than 0.5 percent.
(e) Vehicles used for transportation when
				  examining the mine shall be approved by MSHA under the applicable requirements
				  of 30 CFR parts 18 through 36. Vehicles shall not be used to examine the mine
				  if the monitoring system is inoperable or has malfunctioned.
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 57.22604 - Blasting from the surface (II-B mines)

Current through July 13, 2024
All development, production, and bench rounds shall be
					 initiated from the surface after all persons are out of the mine. Persons other
					 than those designated by the mine operator to make methane tests shall not
					 enter the mine until all blast areas have been tested 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 57.22605 - Blasting from the surface (V-A mines)

Current through July 13, 2024
(a) All development
				  and production blasting shall be initiated from the surface after all persons
				  are out of the mine. Persons shall not enter the mine until ventilating air has
				  passed over the blast area and through at least one atmospheric monitoring
				  sensor.
(b) If the monitoring
				  system indicates that methane in the mine is less than 1.0 percent, persons may
				  enter the mine, and all places blasted shall be tested for methane by a
				  competent person before work is started.
(c) If the monitoring system indicates the
				  presence of 1.0 percent or more methane, persons other than examiners shall not
				  enter the mine until the mine has been examined by a competent person and the
				  methane level is less than 1.0 percent.
(d) Vehicles used for transportation when
				  examining the mine shall be approved by MSHA under the applicable requirements
				  of 30 CFR parts 18 through 36.
(e)
				  This standard applies only to mines blasting within an oil reservoir.
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 57.22606 - Explosive materials and blasting units (III mines)

Current through July 13, 2024
(a) Mine operators shall notify the
				  appropriate MSHA District Manager of all nonapproved explosive materials and
				  blasting units to be used prior to their use. Explosive materials used for
				  blasting shall be approved by MSHA under 30 CFR part 15, or nonapproved
				  explosive materials shall be evaluated and determined by the District Manager
				  to be safe for blasting in a potentially gassy environment. The notice shall
				  also include the millisecond-delay interval between successive shots and
				  between the first and last shot in a round.
(b) Faces shall be examined for proper
				  placement of holes, possible breakthrough, and water. Ammonium nitrate blasting
				  agents shall not be loaded into wet holes.
(c) Multiple-shot blasts shall be initiated
				  with detonators encased in copper-based alloy shells. Aluminum and aluminum
				  alloy-cased detonators, nonelectric detonators, detonating cord, and safety
				  fuses shall not be used. All detonators in a round shall be made by the same
				  manufacturer.
(d) Nonapproved
				  explosives shall be used only as primers with ammonium nitrate-fuel oil
				  blasting agents. Such primers shall be placed at the back or bottom of the
				  hole.
(e) Blast holes shall be
				  stemmed with a noncombustible material in an amount to confine the explosive
				  charge. Breakthrough holes shall be stemmed at both ends.
(f) Mudcaps or other nonapproved unconfined
				  shots shall not be blasted.
(g)
(1) Blasting units shall be approved by MSHA
				  under 30 CFR part 25; or
(2)
				  Blasting units used to fire more than 20 detonators shall provide at least 2
				  amperes through each detonator but not more than an average of 100 amperes
				  through one ohm for 10 milliseconds, and provide the necessary current for at
				  least the first 5 milliseconds with a cutoff not to exceed 10
				  milliseconds.
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 57.22607 - Blasting on shift (III mines)

Current through July 13, 2024
When blasting on shift, tests for methane shall be made in
					 the mine atmosphere by a competent person before blasting. Blasting shall not
					 be done when 1.0 percent or more methane is present.
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 57.22608 - Secondary blasting (I-A, II-A, and V-A mines)

Current through July 13, 2024
Prior to secondary blasting, tests for methane shall be
					 made in the mine atmosphere at blast sites by a competent person. Secondary
					 blasting shall not be done when 0.5 percent or more methane is
					 present.
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 › Appendix I to Subpart T - Standard Applicability by Category or Subcategory

Current through July 13, 2024
Subcategory I-A
57.22101 57.22103 57.22201 57.22202 57.22204 57.22205
					 57.22206 57.22207 57.22208 57.22211 57.22214 57.22215 57.22217 57.22220
					 57.22221 57.22222 57.22224 57.22227 57.22228 57.22229 57.22234 57.22237
					 57.22301 57.22302 57.22306 57.22401 57.22501 57.22601 57.22608
Subcategory I-B
57.22201 57.22202 57.22217 57.22222 57.22227 57.22231
					 57.22232 57.22234 57.22238 57.22401 57.22501
Subcategory I-C
57.22102 57.22104 57.22106 57.22201 57.22202 57.22203
					 57.22209 57.22210 57.22212 57.22216 57.22217 57.22222 57.22225 57.22227
					 57.22228 57.22233 57.22235 57.22241 57.22303 57.22310 57.22313 57.22501
					 57.22602
Subcategory II-A
57.22101 57.22103 57.22201 57.22202 57.22204 57.22205
					 57.22206 57.22207 57.22208 57.22212 57.22214 57.22215 57.22219 57.22220
					 57.22221 57.22222 57.22227 57.22228 57.22230 57.22232 57.22235 57.22301
					 57.22304 57.22307 57.22311 57.22312 57.22501 57.22603 57.22608
Subcategory II-B
57.22201 57.22227 57.22231 57.22232 57.22235 57.22238
					 57.22501 57.22604
Category III
57.22101 57.22103 57.22201 57.22202 57.22204 57.22205
					 57.22206 57.22207 57.22208 57.22213 57.22214 57.22215 57.22218 57.22220
					 57.22221 57.22222 57.22223 57.22224 57.22227 57.22228 57.22229 57.22234
					 57.22237 57.22305 57.22308 57.22501 57.22606 57.22607
Category IV
57.22105 57.22201 57.22226 57.22227 57.22232 57.22235
					 57.22239 57.22501
Subcategory V-A
57.22101 57.22103 57.22201 57.22202 57.22204 57.22205
					 57.22206 57.22207 57.22208 57.22212 57.22214 57.22215 57.22218 57.22220
					 57.22221 57.22222 57.22227 57.22228 57.22229 57.22234 57.22240 57.22301
					 57.22302 57.22309 57.22312 57.22314 57.22315 57.22501 57.22605 57.22608
Subcategory V-B
57.22201 57.22202 57.22218 57.22222 57.22227 57.22231
					 57.22232 57.22234 57.22238 57.22314 57.22501
Category VI
57.22231 57.22232 57.22236 57.22238
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart A - General › Section 75.1 - Scope

Current through July 13, 2024
This Part 75 sets forth safety standards compliance with
					 which is mandatory in each underground coal mine subject to the Federal Mine
					 Safety and Health Act of 1977. Some standards also are applicable to surface
					 operations. Regulations and criteria supplementary to these standards also are
					 set forth in this part.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.100 - Certified person

Current through July 13, 2024
(a) The provisions
				  of Subpart D-Ventilation of this Part 75 require that certain examinations and
				  tests be made by a certified person. A certified person within the meaning of
				  those provisions is a person who has been certified as a mine foreman (mine
				  manager), an assistant mine foreman (section foreman), or a preshift examiner
				  (mine examiner). A person who has been so certified is also a qualified person
				  within the meaning of those provisions of Subpart D of this part which require
				  that certain tests be made by a qualified person and within the meaning of S
				  75.1106.
(b) A person who is
				  certified as a mine foreman, an assistant mine foreman, or a preshift examiner
				  by the State in which the coal mine is located is, to the extent of the State's
				  certification, a certified person within the meaning of the provisions of
				  Subpart D of this part and S 75.1106 referred to in paragraph (a) of this
				  section.
(c)
(1) The Secretary may certify persons in the
				  categories of mine foreman, assistant mine foreman, and preshift examiner
				  whenever the State in which persons are presently employed in these categories
				  does not provide for such certification. A person's initial certification by
				  MSHA is valid for as long as the person continues to satisfy the requirements
				  necessary to obtain the certification and is employed at the same coal mine or
				  by the same independent contractor. The mine operator or independent contractor
				  shall make an application which satisfactorily shows that each such person has
				  had at least 2 years underground experience in a coal mine, and has held the
				  position of mine foreman, assistant mine foreman, or preshift examiner for a
				  period of 6 months immediately preceding the filing of the application, and is
				  qualified to test for methane and for oxygen deficiency. Applications for
				  Secretarial certification should be submitted in writing to the Health and
				  Safety Activity, Mine Safety and Health Administration, Certification and
				  Qualification Center, P.O. Box 25367, Denver Federal Center, Denver, Colorado
				  80225.
(2) A person certified by
				  the Secretary under this paragraph will be a certified person, within the
				  meaning of the provisions for Subpart D of this part and S 75.1106 referred to
				  in paragraph (a) of this section, as long as that person continues to satisfy
				  the requirements for qualification or certification and is employed at the same
				  coal mine or by the same independent contractor.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.150 - Test for methane and for oxygen deficiency; qualified person

Current through July 13, 2024
(a) The provisions of Subpart D-Ventilation
				  of this part and S 75.1106 require that tests for methane and for oxygen
				  deficiency be made by a qualified person. A person is a qualified person for
				  this purpose if he is a certified person under S 75.100.
(b) Pending issuance of Federal standards, a
				  person will be considered a qualified person for testing for methane and for
				  oxygen deficiency:
(1) If he has been
				  qualified for this purpose by the State in which the coal mine is located;
				  or
(2) The Secretary may qualify
				  persons for this purpose in a coal mine in which persons are not qualified for
				  this purpose by the State upon an application and a satisfactory showing by the
				  operator of the coal mine that each such person has been trained and designated
				  by the operator to test for methane and oxygen deficiency and has made such
				  tests for a period of 6 months immediately preceding the application.
				  Applications for Secretarial qualification should be submitted to the Health
				  and Safety Activity, Mine Safety and Health Administration, Certification and
				  Qualification Center, P.O. Box 25367, Denver Federal Center, Denver, Colo.
				  80225.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.151 - Test for methane; qualified person; additional requirement

Current through July 13, 2024
Notwithstanding the provisions of S 75.150, on and after
					 January 1, 1971, no person shall be a qualified person for testing for methane
					 unless he demonstrates to the satisfaction of an authorized representative of
					 the Secretary that he is qualified to test for methane with a portable methane
					 detector approved by the Bureau of Mines or the Mine Safety and Health
					 Administration under Part 22 of this chapter (Bureau of Mines Schedule
					 8C).
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.152 - Test of air flow; qualified person

Current through July 13, 2024
A person is a qualified person within the meaning of the
					 provisions of Subpart D-Ventilation of this part requiring that tests of air
					 flow be made by a qualified person only if he is a certified person under S
					 75.100 or a person trained and designated by a certified person to perform such
					 tests.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.153 - Electrical work; qualified person

Current through July 13, 2024
(a) Except as
				  provided in paragraph (f) of this section, an individual is a qualified person
				  within the meaning of SS 75.511 and 75.512 to perform electrical work (other
				  than work on energized surface high-voltage lines) if--
(1) He has been qualified as a coal mine
				  electrician by a State that has a coal mine electrical qualification program
				  approved by the Secretary; or,
(2)
				  He has at least 1 year of experience in performing electrical work underground
				  in a coal mine, in the surface work areas of an underground coal mine, in a
				  surface coal mine, in a noncoal mine, in the mine equipment manufacturing
				  industry, or in any other industry using or manufacturing similar equipment,
				  and has satisfactorily completed a coal mine electrical training program
				  approved by the Secretary; or,
(3)
				  He has at least 1 year of experience, prior to the date of the application
				  required by paragraph (c) of this section, in performing electrical work
				  underground in a coal mine, in the surface work areas of an underground coal
				  mine, in a surface coal mine, in a noncoal mine, in the mine equipment
				  manufacturing industry, or in any other industry using or manufacturing similar
				  equipment, and he attains a satisfactory grade on each of the series of five
				  written tests approved by the Secretary and prescribed in paragraph (b) of this
				  section.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.154 - Repair of energized surface high voltage lines; qualified person

Current through July 13, 2024
An individual is a qualified person within the meaning of S
					 75.705 for the purpose of repairing energized surface high voltage lines only
					 if he has had at least 2 years experience in electrical maintenance, and at
					 least 2 years experience in the repair of energized high voltage surface lines
					 located on poles or structures.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.155 - Qualified hoisting engineer; qualifications

Current through July 13, 2024
(a)
(1) A person is a qualified hoisting engineer
				  within the provisions of subpart O of this part, for the purpose of operating a
				  steam-driven hoist in a coal mine, if he has at least 1 year experience as an
				  engineer in a steam-driven hoisting plant and is qualified by the State in
				  which the mine is located as a steam-hoisting engineer; or
(2) If a State has no program for qualifying
				  persons as steam-hoisting engineers, the Secretary may qualify persons for this
				  purpose if the operator of the coal mine in which such persons are employed, or
				  the independent contractor, makes an application and a satisfactory showing
				  that each such person has had 1 year experience in operating steam-driven
				  hoists and has held the position of hoisting engineer for a period of 6 months
				  immediately preceding the application. A person's qualification is valid for as
				  long as this person continues to satisfy the requirements necessary for
				  qualification and is employed at the same coal mine or by the same independent
				  contractor.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.159 - Records of certified and qualified persons

Current through July 13, 2024
The operator of each coal mine shall maintain a list of all
					 certified and qualified persons designated to perform duties under this part
					 75.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.160 - Training programs

Current through July 13, 2024
[Statutory Provision]
Every operator of a coal mine shall provide a program,
					 approved by the Secretary, of training and retraining of both qualified and
					 certified persons needed to carry out functions prescribed in the
					 Act.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart B - Qualified and Certified Persons › Section 75.161 - Plan for training programs

Current through July 13, 2024
Each mine operator shall submit to the District Manager a
					 program or plan setting forth what, when, how, and where the operator will
					 train and retrain persons whose work assignments require that they be qualified
					 or certified. The program shall provide--
(a) For certified persons, annual training
				  courses in methane measurement and oxygen deficiency testing, roof and rib
				  control, ventilation, first aid, principles of mine rescue, and the provisions
				  of this part 75;
(b) For qualified
				  persons, annual courses in performance of the tasks which they perform as
				  qualified persons; and
(c) For
				  certified persons, annual training in the use of self-contained self-rescue
				  devices used at the mine. This training shall include complete donning
				  procedures in which each person assumes proper position, opens the device,
				  activates the device, inserts the mouthpiece or simulates this task while
				  explaining proper insertion of the mouthpiece, and puts on the nose
				  clip.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.200 - Scope

Current through July 13, 2024
This subpart C sets forth requirements for controlling
					 roof, face and ribs, including coal or rock bursts, in underground coal mines.
					 Roof control systems installed prior to the effective date of this subpart are
					 not affected so long as the support system continues to effectively control the
					 roof, face and ribs.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.201 - Definitions

Current through July 13, 2024
Automated temporary roof support (ATRS) system. A device to
					 provide temporary roof support from a location where the equipment operator is
					 protected from roof falls.
Pillar recovery. Any reduction in pillar size during
					 retreat mining.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.202 - Protection from falls of roof, face and ribs

Current through July 13, 2024
(a) The roof, face
				  and ribs of areas where persons work or travel shall be supported or otherwise
				  controlled to protect persons from hazards related to falls of the roof, face
				  or ribs and coal or rock bursts.
(b) No person shall work or travel under
				  unsupported roof unless in accordance with this subpart.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.203 - Mining methods

Current through July 13, 2024
(a) The method of
				  mining shall not expose any person to hazards caused by excessive widths of
				  rooms, crosscuts and entries, or faulty pillar recovery methods. Pillar
				  dimensions shall be compatible with effective control of the roof, face and
				  ribs and coal or rock bursts.
(b) A
				  sightline or other method of directional control shall be used to maintain the
				  projected direction of mining in entries, rooms, crosscuts and pillar
				  splits.
(c) A sidecut shall be
				  started only from an area that is supported in accordance with the roof control
				  plan.
(d) A working face shall not
				  be mined through into an unsupported area of active workings, except when the
				  unsupported area is inaccessible.
(e) Additional roof support shall be
				  installed where
(1) The width of the opening
				  specified in the roof control plan is exceeded by more than 12 inches;
				  and
(2) The distance over which the
				  excessive width exists is more than 5 feet.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.204 - Roof bolting

Current through July 13, 2024
(a) For roof bolts
				  and accessories addressed in ASTM F432-88, "Standard Specification for Roof and
				  Rock Bolts and Accessories", the mine operator shall
(1) Obtain a manufacturer's certification
				  that the material was manufactured and tested in accordance with the
				  specifications of ASTM F432-88; and
(2) Make this certification available to 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 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.205 - Installation of roof support using mining machines with integral roof bolters

Current through July 13, 2024
When roof bolts are installed by a continuous mining
					 machine with integral roof bolting equipment--
(a) The distance between roof bolts shall not
				  exceed 10 feet crosswise.
(b) Roof
				  bolts to be installed 9 feet or more apart shall be installed with a wooden
				  crossbar at least 3 inches thick and 8 inches wide, or material which provides
				  equivalent support.
(c) Roof bolts
				  to be installed more than 8 feet but less than 9 feet apart shall be installed
				  with a wooden plank at least 2 inches thick and 8 inches wide, or material
				  which provides equivalent support.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.206 - Conventional roof support

Current through July 13, 2024
(a) Except in
				  anthracite mines using non-mechanized mining systems, when conventional roof
				  support materials are used as the only means of support--
(1) The width of any opening shall not exceed
				  20 feet;
(2) The spacing of roadway
				  roof support shall not exceed 5 feet;
(3)
(i)
				  Supports shall be installed to within 5 feet of the uncut face;
(ii) When supports nearest the face must be
				  removed to facilitate the operation of face equipment, equivalent temporary
				  support shall be installed prior to removing the supports;
(4) Straight roadways shall not exceed 16
				  feet wide where full overhead support is used and 14 feet wide where only posts
				  are used;
(5) Curved roadways shall
				  not exceed 16 feet wide; and
(6)
				  The roof at the entrance of all openings along travelways which are no longer
				  needed for storing supplies or for travel of equipment shall be supported by
				  extending the line of support across the opening.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.207 - Pillar recovery

Current through July 13, 2024
Pillar recovery shall be conducted in the following manner,
					 unless otherwise specified in the roof control plan:
(a) Full and partial pillar recovery shall
				  not be conducted on the same pillar line, except where physical conditions such
				  as unstable floor or roof, falls of roof, oil and gas well barriers or surface
				  subsidence require that pillars be left in place.
(b) Before mining is started in a pillar
				  split or lift-
(1) At least two rows of
				  breaker posts or equivalent support shall be installed--
(i) As close to the initial intended
				  breakline as practicable; and
(ii)
				  Across each opening leading into an area where full or partial pillar
				  extraction has been completed.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.208 - Warning devices

Current through July 13, 2024
Except during the installation of roof supports, the end of
					 permanent roof support shall be posted with a readily visible warning, or a
					 physical barrier shall be installed to impede travel beyond permanent
					 support.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.209 - Automated Temporary Roof Support (ATRS) systems

Current through July 13, 2024
(a)
				  Except in anthracite mines and as specified in paragraphs (b) and (c) of this
				  section, an ATRS system shall be used with roof bolting machines and
				  continuous-mining machines with integral roof bolters operated in a working
				  section. The requirements of this paragraph shall be met according to the
				  following schedule:
(1) All new machines
				  ordered after March 28, 1988.
(2)
				  All existing machines operated in mining heights of 36 inches or more after
				  March 28, 1989; and
(3) All
				  existing machines operated in mining heights of 30 inches or more but less than
				  36 inches after March 28, 1990.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.210 - Manual installation of temporary support

Current through July 13, 2024
(a) When
				  manually installing temporary support, only persons engaged in installing the
				  support shall proceed beyond permanent support.
(b) When manually installing temporary
				  supports, the first temporary support shall be set no more than 5 feet from a
				  permanent roof support and the rib. All temporary supports shall be set so that
				  the person installing the supports remains between the temporary support being
				  set and two other supports which shall be no more than 5 feet from the support
				  being installed. Each temporary support shall be completely installed prior to
				  installing the next temporary support.
(c) All temporary supports shall be placed on
				  no more than 5-foot centers.
(d)
				  Once temporary supports have been installed, work or travel beyond permanent
				  roof support shall be done between temporary supports and the nearest permanent
				  support or between other temporary supports.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.211 - Roof testing and scaling

Current through July 13, 2024
(a) A visual
				  examination of the roof, face and ribs shall be made immediately before any
				  work is started in an area and thereafter as conditions warrant.
(b) Where the mining height permits and the
				  visual examination does not disclose a hazardous condition, sound and vibration
				  roof tests, or other equivalent tests, shall be made where supports are to be
				  installed. When sound and vibration tests are made, they shall be conducted--
(1) After the ATRS system is set against the
				  roof and before other support is installed; or
(2) Prior to manually installing a roof
				  support. This test shall begin under supported roof and progress no further
				  than the location where the next support is to be installed.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.212 - Rehabilitation of area with unsupported roof

Current through July 13, 2024
(a) Before
				  rehabilitating each area where a roof fall has occurred or the roof has been
				  removed by mining machines or by blasting--
(1) The mine operator shall establish the
				  clean up and support procedures that will be followed;
(2) All persons assigned to perform
				  rehabilitation work shall be instructed in the clean-up and support procedures;
				  and
(3) Ineffective, damaged or
				  missing roof support at the edge of the area to be rehabilitated shall be
				  replaced or other equivalent support installed.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.213 - Roof support removal

Current through July 13, 2024
(a)
(1) All persons who perform the work of
				  removing permanent roof supports shall be supervised by a management person
				  experienced in removing roof supports.
(2) Only persons with at least one year of
				  underground mining experience shall perform permanent roof support removal
				  work.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.214 - Supplemental support materials, equipment and tools

Current through July 13, 2024
(a) A supply of supplementary roof support
				  materials and the tools and equipment necessary to install the materials shall
				  be available at a readily accessible location on each working section or within
				  four crosscuts of each working section.
(b) The quantity of support materials and
				  tools and equipment maintained available in accordance with this section shall
				  be sufficient to support the roof if adverse roof conditions are encountered,
				  or in the event of an accident involving a fall.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.215 - Longwall mining systems

Current through July 13, 2024
For each longwall mining section, the roof control plan
					 shall specify--
(a) The methods that
				  will be used to maintain a safe travelway out of the section through the
				  tailgate side of the longwall; and
(b) The procedures that will be followed if a
				  ground failure prevents travel out of the section through the tailgate side of
				  the longwall.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.220 - Roof control plan

Current through July 13, 2024
(a)
(1) Each mine operator shall develop and
				  follow a roof control plan, approved by the District Manager, that is suitable
				  to the prevailing geological conditions, and the mining system to be used at
				  the mine. Additional measures shall be taken to protect persons if unusual
				  hazards are encountered.
(2) The
				  proposed roof control plan and any revisions to the plan shall be submitted, in
				  writing, to the District Manager. When revisions to a roof control plan are
				  proposed, only the revised pages need to be submitted unless otherwise
				  specified by the District Manager. Upon approval a copy of the approved plan,
				  and any changes, shall be file with the State Mine Inspector.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.221 - Roof control plan information

Current through July 13, 2024
(a) The following
				  information shall be included in each roof control plan:
(1) The name and address of the
				  company.
(2) The name, address,
				  mine identification number and location of the mine.
(3) The name and title of the company
				  official responsible for the plan.
(4) A typical columnar section of the mine
				  strata which shall--
(i) Show the name and
				  the thickness of the coalbed to be mined and any persistent partings;
(ii) Identify the type and show the thickness
				  of each stratum up to and including the main roof above the coalbed and for
				  distance of at least 10 feet below the coalbed; and
(iii) Indicate the maximum cover over the
				  area to be mined.
(5) A
				  description and drawings of the sequence of installation and spacing of
				  supports for each method of mining used.
(6) When an ATRS system is used, the maximum
				  distance that an ATRS system is to be set beyond the last row of permanent
				  support.
(7) When tunnel liners or
				  arches are to be used for roof support, specifications and installation
				  procedures for the liners or arches.
(8) Drawings indicating the planned width of
				  openings, size of pillars, method of pillar recovery, and the sequence of
				  mining pillars.
(9) A list of all
				  support materials required to be used in the roof, face and rib control system,
				  including, if roof bolts are to be installed--
(i) The length, diameter, grade and type of
				  anchorage unit to be used;
(ii) The
				  drill hole size to be used; and
(iii) The installed torque or tension range
				  for tensioned roof bolts.
(10) When mechanically anchored tensioned
				  roof bolts are used, the intervals at which test holes will be
				  drilled.
(11) A description of the
				  method of protecting persons-
(i) From
				  falling material at drift openings; and
(ii) When mining approaches within 150 feet
				  of an outcrop.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.222 - Roof control plan-approval criteria

Current through July 13, 2024
(a) This section
				  sets forth the criteria that shall be considered on a mine-by-mine basis in the
				  formulation and approval of roof control plans and revisions. Additional
				  measures may be required in plans by the District Manager. Roof control plans
				  that do not conform to the applicable criteria in this section may be approved
				  by the District Manager, provided that effective control of the roof, face and
				  ribs can be maintained.
(b) Roof
				  Bolting.
(1) Roof bolts should be installed
				  on centers not exceeding 5 feet lengthwise and crosswise, except as specified
				  in S 75.205.
(2) When tensioned
				  roof bolts are used as a means of roof support, the torque or tension range
				  should be capable of supporting roof bolt loads of at least 50 percent of
				  either the yield point of the bolt or anchorage capacity of the strata,
				  whichever is less.
(3) Any opening
				  that is more than 20 feet wide should be supported by a combination of roof
				  bolts and conventional supports.
(4) In any opening more than 20 feet wide--
(i) Posts should be installed to limit each
				  roadway to 16 feet wide where straight and 18 feet wide where curved;
				  and
(ii) A row of posts should be
				  set for each 5 feet of space between the roadway posts and the ribs.
(5) Openings should not be more
				  than 30 feet wide.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart C - Roof Support › Section 75.223 - Evaluation and revision of roof control plan

Current through July 13, 2024
(a) Revisions
				  of the roof control plan shall be proposed by the operator-
(1) When conditions indicate that the plan is
				  not suitable for controlling the roof, face, ribs, or coal or rock bursts;
				  or
(2) When accident and injury
				  experience at the mine indicates the plan is inadequate. The accident and
				  injury experience at each mine shall be reviewed at least every six
				  months.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart D - Ventilation › Section 75.302 - Main mine fans

Current through July 13, 2024
Each coal mine shall be ventilated by one or more main mine
					 fans. Booster fans shall not be installed underground to assist main mine fans
					 except in anthracite mines. In anthracite mines, booster fans installed in the
					 main air current or a split of the main air current may be used provided their
					 use is approved in the ventilation plan.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart D - Ventilation › Section 75.310 - Installation of main mine fans

Current through July 13, 2024
(a) Each main mine
				  fan shall be-
(1) Installed on the surface in
				  an incombustible housing;
(2)
				  Connected to the mine opening with incombustible air ducts;
(3) Equipped with an automatic device that
				  gives a signal at the mine when the fan either slows or stops. A responsible
				  person designated by the operator shall always be at a surface location at the
				  mine where the signal can be seen or heard while anyone is underground. This
				  person shall be provided with two-way communication with the working sections
				  and work stations where persons are routinely assigned to work for the majority
				  of a shift;
(4) Equipped with a
				  pressure recording device system. Mines permitted to shut down main mine fans
				  under 75.311 and which do not have a pressure recording device installed on
				  main mine fans shall have until June 10, 1997 to install a pressure recording
				  device or system on all main mine fans. If a device or system other than a
				  circular pressure recorder is used to monitor main mine fan pressure, the
				  monitoring device or system shall provide a continuous graph or continuous
				  chart of the pressure as a function of time. At not more than 7-day intervals,
				  a hard copy of the continuous graph or chart shall be generated or the record
				  of the fan pressure shall be stored electronically. When records of fan
				  pressure are stored electronically, the system used to store these records
				  shall be secure and not susceptible to alteration and shall be capable of
				  storing the required data. Records of the fan pressure shall be retained at a
				  surface location at the mine for at least 1 year and be made available for
				  inspection by authorized representatives of the Secretary and the
				  representative of miners;
(5)
				  Protected by one or more weak walls or explosion doors, or a combination of
				  weak walls and explosion doors, located in direct line with possible explosive
				  forces;
(6) Except as provided
				  under paragraph (e) of this section, offset by at least 15 feet from the
				  nearest side of the mine opening unless an alternative method of protecting the
				  fan and its associated components is approved in the ventilation
				  plan.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart D - Ventilation › Section 75.311 - Main mine fan operation

Current through July 13, 2024
(a) Main mine fans
				  shall be continuously operated, except as otherwise approved in the ventilation
				  plan, or when intentionally stopped for testing of automatic closing doors and
				  automatic fan signal devices, maintenance or adjustment of the fan, or to
				  perform maintenance or repair work underground that cannot otherwise be made
				  while the fan is operating.
(b)
				  Except as provided in paragraph (c) of this section, when a main mine fan is
				  intentionally stopped and the ventilating quantity provided by the fan is not
				  maintained by a back-up fan system-
(1) Only
				  persons necessary to evaluate the effect of the fan stoppage or restart, or to
				  perform maintenance or repair work that cannot otherwise be made while the fan
				  is operating, shall be permitted underground;
(2) Mechanized equipment shall be shut off
				  before stopping the fan; and
(3)
				  Electric power circuits entering underground areas of the mine shall be
				  deenergized.
Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0004 - Mining Inspector › Chapter 4 - UNDERGROUND COAL MINES › Subpart D - Ventilation › Section 75.312 - Main mine fan examinations and records

Current through July 13, 2024
(a) To assure
				  electrical and mechanical reliability of main mine fans, each main mine fan and
				  its associated components, including devices for measuring or recording mine
				  ventilation pressure, shall be examined for proper operation by a trained
				  person designated by the operator. Examinations of main mine fans shall be made
				  at least once each day that the fan operates, unless a fan monitoring system is
				  used. No examination is required on any day when no one, including certified
				  persons, goes underground, except that an examination shall be completed prior
				  to anyone entering the mine.
(b)
(1) If a main mine fan monitoring system is
				  used, a trained person designated by the operator shall-
(i) At least once each day review the data
				  provided by the fan monitoring system to assure that the fan and the fan
				  monitoring system are operating properly. No review is required on any day when
				  no one, including certified persons, goes underground, except that a review of
				  the data shall be performed prior to anyone entering the underground portion of
				  the mine. Data reviewed should include the fan pressure, bearing temperature,
				  revolutions per minute, vibration, electric voltage, and amperage;
				  and
(ii) At least every 7 days-
(A) Test the monitoring system for proper
				  operation; and
(B) Examine each
				  main mine fan and its associated components to assure electrical and mechanical
				  reliability of main mine fans