Mining Operations

Wyo. Stat. Ann. tit. 30, ch. 2
in effect

Wyo. Stat. Ann. § 30-2-101 Definitions.

(a) As used in this act: (i) "Approved" means any device or practice approved by the inspector; (ii) "Council" means the state mining council which is within the department of workforce services; (iii) "Coal mine" means any mine from which coal is produced for sale, exchange or use; (iv) "Cross entry" means an entry from which room entries are turned; (v) "Gassy mine" means a mine: (A) In which methane has been ignited; (B) In which methane has been found by means of a permissible flame safety lamp or by air analysis in an amount of twenty-five one hundredths of a percent (0.25%) or more; or (C) Which is contiguous to a gassy mine. (vi) "Inspector" means the state inspector of mines; (vii) "Interested persons" means authorized members of the mine safety committee, state and federal inspectors, and, to the extent required by law, any other person; (viii) "Mine" means underground or surface mines, including coal mines; (ix) "Mine foreman" means the person whom the operator places in charge of the workings of a mine or a portion of a mine and of persons employed therein. He is the official responsible for the health and safety of the employees; (x) "Mining operations" include the following whether in process or development, construction or operation: (A) Mines; (B) Ore mills; (C) Ore processing plants; (D) Sampling works; (E) Smelters; (F) Metallurgical plants; (G) Cement manufacturing plants and cement works; (H) Rock quarries; (J) Clay pits and mines; (K) Sand and gravel pits; (M) Tunnels and tunneling; (N) Excavations or removal of earth for commercial or industrial purposes; (O) All other processes or operations in which mineral materials in solid form are extracted or processed within Wyoming, but excluding mining operations and processes relating to highway and railroad construction and maintenance, other than tunneling, performed directly under the control and supervision of the state department of transportation or a railroad company. The exclusion does not apply to commercial suppliers. (xi) "Nongassy mine" means any mine not classed as a gassy mine; (xii) "Operator" means an individual, firm, partnership, or corporation operating a mine or any part thereof; (xiii) "Permissible" means any equipment, device, or explosive that meets the requirements of the MSHA; (xiv) Repealed by Laws 2003, Ch. 5, § 2. (xv) "This act" means W.S. 30-2-101 through 30-3-509; (xvi) "MSHA" means the federal mine safety and health administration, department of labor; (xvii) "Qualified person" means a person qualified by means of the proper certification issued by the council or by means of training and practical demonstration of ability to the inspector or MSHA; (xviii) "Mine site contractor" means a person who has entered into a contract with a mine owner or operator to perform functions traditionally performed by mine personnel.

Wyo. Stat. Ann. § 30-2-102 Minimum standards.

This act and the rules and regulations adopted under it constitute the body of standards for mining operations in this state. The laws, rules and regulations are intended to constitute minimum standards recognized as necessary for the protection of the public interest and the safety of employees and the general public.

Wyo. Stat. Ann. § 30-2-103 General penalty.

Any person who willfully and knowingly violates any provision of this act or rules and regulations adopted under it for which another penalty has not been specifically provided is guilty of a misdemeanor punishable by a fine of not more than seven hundred fifty dollars ($750.00) or by imprisonment of not more than six (6) months, or both.

Wyo. Stat. Ann. § 30-2-104 Restrictions upon visitation.

(a) No person shall enter or remain in any mine, excavation, pit, quarry, mill, or processing plant unless authorized by the owner or operator or by law. (b) No person other than the owner and operator, his employees and agents, and inspectors shall enter, be permitted to enter or remain in any mine, excavation, pit, quarry, mill, or processing plant unless accompanied by the owner, operator or other authorized person.

Wyo. Stat. Ann. § 30-2-105 Alcohol or controlled substances and intoxication by either prohibited.

No alcohol or a controlled substance as defined in W.S. 35-7-1014 through 35-7-1022 except a controlled substance in schedule V not requiring a prescription or as prescribed by W.S. 35-7-1030 shall be taken into or permitted within any mine, excavation, pit or quarry, or mill or processing plant. No person believed to be under the influence of alcohol or a controlled substance as defined in W.S. 35-7-1014 through 35-7-1022 except a controlled substance in schedule V not requiring a prescription or as prescribed by W.S. 35-7-1030 shall be allowed to enter or remain in or around any mine, excavation, pit, quarry, or mill or processing plant.

Wyo. Stat. Ann. § 30-2-106 Action for damages; injury to person or property; loss of life; exception.

For any injury to person or property occasioned by a violation of or a willful failure to comply with this act, a right of action against the party at fault shall accrue to the party injured for the direct damages sustained thereby. In any case of loss of life, by reason of such a violation or willful failure, a right of action against the party at fault shall accrue to the administrator of the estate of the deceased person for like recovery of damages for the injuries sustained. Nothing in this section shall be construed to prevent the recovery of any lawful damages against the person or company operating a mine if the company is found at fault or to have contributed to any accident by their carelessness. The state shall not be liable for damages under this section.

Wyo. Stat. Ann. § 30-2-107 Prohibited acts generally.

(a) No person shall intentionally: (i) Injure any shaft, lamp, instrument, air course or brattice; (ii) Obstruct or throw open airways; (iii) Carry any pipe, cigar or cigarette, match or fire-producing material or appliance into places worked by safety lamps; (iv) Handle or disturb any part of the mine machinery; (v) Open and fail to close a door; (vi) Enter any place of a mine against caution; (vii) Disobey any order given in implementing this act; (viii) Commit any act endangering the lives or the health of persons or the security of a mine or machinery.

Wyo. Stat. Ann. § 30-2-108 Bathhouses; when required; specifications; requirements as to use; penalty for failure to provide.

(a) A mine owner or operator employing twenty (20) or more miners at any one (1) mine shall provide and maintain in a clean and sanitary condition a bathhouse for the use of the employees if sixty percent (60%) of the employees request it in writing. (b) The bathhouse shall: (i) Be convenient to the mine entrance; (ii) Be equipped with: (A) Sufficient individual lockers, or baskets or hangers; (B) Benches or seats; (C) Proper lights, heat, hot and cold water, and shower baths. (iii) Be maintained in good order; (iv) Have sufficient floor space to accommodate the persons using it; (v) Have concrete, tile or cement flooring in the washroom or bathroom; (vi) Be constructed of noncombustible material; (vii) Have steel lockers not less than twelve (12) inches by twelve (12) inches by forty-eight (48) inches in height, or individual hangers of not less than three (3) hooks with a basket of suitable size, attached to a proper chain or wire rope, placed so wearing apparel, when hung thereon, will not be less than seven (7) feet above the floor of the building, and capable of being locked in that position. Lockers, or baskets or hangers shall be sufficient in number to accommodate the employees using the bathhouse; (viii) Have one (1) shower bath with adequate floor space for every fifteen (15) employees using the bathhouse. (c) Employees shall: (i) Furnish their own towels, soap and lock for their lockers, or baskets or hangers; (ii) Exercise control over, and be responsible for, property they leave in their lockers, or baskets or hangers. (d) A mine owner or operator violating this section is guilty of a misdemeanor punishable by a fine of not less than fifty dollars ($50.00), nor more than one hundred dollars ($100.00). Each day there is a violation of this section constitutes a separate offense.

Wyo. Stat. Ann. § 30-2-201 Appointment and qualifications of inspector and deputy inspectors; terms of office; removal; bond coverage; to devote full time to duties.

(a) There is created the office of the inspector of mines within the department of workforce services. The inspector of mines shall be appointed by the governor by and with the advice and consent of the senate but is subject to the Wyoming Government Reorganization Act of 1989. His term of office is two (2) years. His office shall be located in the city of Rock Springs, Sweetwater county, Wyoming. Appointment, term and the filling of vacancies shall be under W.S. 28-12-101 through 28-12-103. His salary shall be determined under W.S. 9-3-101. He may be discharged at any time during his term by the governor as provided in W.S. 9-1-202. The inspector shall: (i) Be a qualified elector of the state and at least thirty-five (35) years of age; (ii) Possess the degree of a graduate engineer from an accredited school, or the equivalent thereof; (iii) Have not less than fifteen (15) years mining experience; (iv) Have experience in underground mining operations, and knowledge of the various problems involving the health and safety of employees in both underground and surface mining, and in the upgrading, processing, milling and beneficiation of the various minerals mined or produced within this state; (v) Be thoroughly familiar with: (A) Ventilation methods in mining; (B) The nature, chemistry, detection and control of noxious, poisonous or explosive gases or emanations; (C) The dangers incident to blasting and the prevention thereof; (D) The application and use of electricity in mining operations; (E) The methods of fire and explosion prevention and control and extinguishment of mine fires; (F) The health and safety problems involved in small and large scale surface mining operations and related earth-removal or excavation; (G) The methods of rescue and recovery work following mine disasters; and (H) State mining laws and mining operations. (vi) Not be an employee, owner or part owner of any mine or mining company in this state; (vii) Possess a mine foreman's certificate. (b) Repealed by Laws 1989, ch. 139, § 4. (c) Subject to the Wyoming Government Reorganization Act of 1989, additional deputy inspectors of mines may be employed, one (1) of which shall be qualified for coal. A deputy inspector of mines for the inspection of mines other than coal mines shall have the same qualifications as the inspector of mines except he shall have had not less than ten (10) years rather than fifteen (15) years of mining experience. A deputy inspector for coal mines shall have the same qualifications as the inspector of mines and also have at least ten (10) years experience in underground mines in this state as part of the total mining experience required. (d) The inspector of mines and all deputy inspectors shall obtain faithful performance and fidelity bond coverage under W.S. 9-1-102. (e) The inspector of mines and all deputy inspectors shall devote full time to the duties of their office.

Wyo. Stat. Ann. § 30-2-202 Duties of inspector; duties of deputy inspectors.

(a) The inspector shall: (i) At reasonable times, day or night, without impeding or obstructing work, enter, inspect and examine any mining operation in development, construction or operation, including the workings and the machinery and may request the assistance of other state agencies; (ii) Collect state mining statistics and report to the governor annually no later than March 31 for the preceding calendar year. The report shall include the statistics and may include recommendations concerning further mining legislation. The statistics in the report shall include for each mine: (A) A record of all mining accidents preventing victims from returning to work the day following the injury; (B) Corrective measures taken to prevent the reoccurrence of fatal accidents; (C) Tons produced; (D) Number of man hours worked. (iii) Maintain a properly indexed, permanent record of all inspections made and reports filed under this act; (iv) Ensure maps or diagrams of all underground mines in the state are accurately made and filed in his office. Maps, diagrams and any plans filed shall be preserved as a permanent and confidential record. If an adjoining operator can show need for safety reasons, he shall be given access to individual maps, diagrams and plans; (v) Supervise the deputy inspectors and have full authority over their official activities; (vi) Enforce all laws, rules and regulations pertaining to the safety of mine operations in this state; (vii) Revoke, in writing, any order issued by a deputy inspector clearing a mine or portion thereof of persons, after he makes a personal examination of the mine affected and determines it to be in a safe condition to operate; (viii) To the extent possible, collect, organize and make available studies, information and dates concerning mineral deposits, geological formations and mining and milling operations in this state; (ix) Exercise supervision necessary for enforcement of this act over and inspection of all mining exploration mines, mining operations, upgrading, processing, milling and beneficiation plants within the state including the inspection of drill holes to ensure the holes have been properly abandoned. (b) Every deputy inspector shall perform inspections and other activities as the inspector directs or as provided by law.

Wyo. Stat. Ann. § 30-2-203 Arbitrary action prohibited; information confidential; exception; interest in mining operations prohibited; discharge for violation of section; additional penalty.

Neither the inspector nor any deputy inspector shall, in any of his functions, act arbitrarily or without just cause. Information obtained in the course of inspections is confidential except where disclosure may be required in enforcement of this act. Grossly negligent release of confidential information acquired in the course of duty, willful discrimination between operators, or knowingly applying to his own material gain knowledge acquired in the course of duty by the inspector or any deputy inspector, is justification for discharge and, in addition, is a misdemeanor punishable upon conviction by a fine not to exceed five hundred dollars ($500.00) or by imprisonment for a period of not more than six (6) months, or both.

Wyo. Stat. Ann. § 30-2-204 Police powers generally.

The inspector and deputy inspectors shall have and exercise throughout the state all of the powers of peace officers with respect to the enforcement of this act.

Wyo. Stat. Ann. § 30-2-205 Rules and regulations; uniform code of signals; penalty for false signals.

(a) The inspector shall under W.S. 16-3-101 through 16-3-115 promulgate rules and regulations to implement this act. Rules and regulations shall be promulgated under this act for all types of mines and mining or for specific types of mines or mining as required to implement this act and to comply with applicable federal law. The rules and regulations shall be no more stringent than federal rules and regulations and shall provide the flexibility necessary in application to specific instances and implement the basic purpose of giving all mining operations and coal mines the greatest freedom consistent with the public interest and the safety of employees and the general public. The inspector shall adopt applicable rules and regulations to the extent necessary to implement the provisions of chapter 3 of this title for which there are no applicable federal rules and regulations. The inspector shall submit all rules and regulations to the council for final approval. The rules implementing the provisions of chapter 3 of this title shall: (i) To the extent not in conflict with an express provision of chapter 3 of this title, provide for consistency and equivalency but not more stringent than rules and regulations adopted by the MSHA under Title 30 of the code of Federal Regulations, Parts 56, 57, 75 and 77, as may be amended, including provisions incorporated by reference in those rules and regulations; and (ii) Authorize variances to safety rules upon petition by the affected operator and a determination by the inspector that: (A) An alternative method of achieving the result of the standard exists that will at all times guarantee no less than the same measure of protection afforded by the standard; (B) Application of the standard will result in a diminution to safety of the miners; or (C) Failure to grant the variance would be inconsistent with action taken on the same petition by the MSHA. (b) The inspector of mines shall by rule or regulation: (i) Adopt and enforce a uniform code of signals; (ii) Determine at which mining operations the code of signals shall be effective; (iii) Prescribe the manner by which the code of signals shall be displayed or distributed. (c) Any person giving or causing to be given false signals, or riding upon any cage, skip or bucket upon signals that designate to the engineer that no employees are aboard, is guilty of a misdemeanor punishable by a fine of not less than fifty dollars ($50.00) nor more than one hundred dollars ($100.00).

Wyo. Stat. Ann. § 30-2-206 "Interested person" defined; filing of requests prerequisite to notice and information.

A person is an interested person entitled to notice under this act of any action of the inspector including any action regarding rules or regulations if he files with the inspector a request for notice containing his name, address and the name of the person authorized to receive the notice. The request shall be considered filed five (5) days following the date the request is received in the office of the inspector.

Wyo. Stat. Ann. § 30-2-207 Access to mining operations, etc.; penalty for refusal of access or obstruction; enforcement by injunction; misrepresentation of facts or information to inspector; obstruction of inspector or deputy.

(a) The inspector or his deputy has access to all mining operations for the purpose of enforcement of this act and all rules and regulations adopted under it. Refusal of access to an authorized person after request is a misdemeanor. Access may be granted by injunction by petition to the court and order to show cause made returnable within ten (10) days or as soon thereafter as the matter may be heard by the court. (b) Any person in charge of a mine who willfully misrepresents facts or information to the inspector regarding the mine, or who makes any misrepresentation tending to show safety when the reverse is true, is guilty of a misdemeanor. (c) Any person who willfully obstructs the inspector or his deputy in the execution of his duties under this act is guilty of a misdemeanor.

Wyo. Stat. Ann. § 30-2-208 Inspections; when held; duties of inspector or deputy; authority to clear unsafe mine or portion thereof.

(a) The inspector or his deputy shall inspect each operating mine in the state: (i) At least once every six (6) months; (ii) If any danger to employees exists; (iii) If requested by employees or their representatives. (b) The inspection shall take place while the mine is in operation, and the inspector or his deputy shall inspect: (i) The surface plant; (ii) Every working place in the mine; (iii) All active haulageways, travelways, highwalls and airways in their entirety; (iv) Entrances to abandoned workings; (v) Accessible old workings; (vi) Escapeways and other places where people work or travel, or where dangerous conditions may exist; (vii) Electric equipment and installation; (viii) First-aid equipment; (ix) Ventilation facilities; (x) Communication installations; (xi) Roof and rib conditions; (xii) Blasting practices. (c) The inspector or his deputy shall: (i) Measure the volume of air at the intake and return of the main ventilating current and of each split, and the amount passing through the last open crosscut in each pair or set of entries, and designate where the superintendent or mine foreman shall measure the currents of air as required by this act; (ii) In mines operating more than one (1) shift in a twenty-four (24) hour period, devote sufficient time on the second and third shift to determine conditions and practices related to the health and safety of the employees; (iii) Make tests for gas and oxygen deficiency in each place which he is required to inspect in the mine; (iv) Classify qualifying mines as gassy mines. (d) If the inspector or his deputy finds imminent or serious danger to the life or health of the employees in a mine, he may clear the mine or any portion thereof of all persons and refuse further entry to any persons, except those necessary to remove the danger and those permitted to participate in investigations under this act, until he determines by actual inspection that the mine or portion thereof involved is in safe operating condition.

Wyo. Stat. Ann. § 30-2-209 Inspections; reports; posting and distribution; interim reports.

(a) The person inspecting the mine shall make an accurate report covering each inspection showing: (i) The date of inspection; (ii) The condition in which the mine is found; (iii) The extent to which safety laws relating to mines are violated; (iv) The progress made in the improvement of the health and safety of the employees; (v) The number and cause of injuries and death resulting from accidents in and around the mine; (vi) If any violations of the mine safety laws, rules or regulations are found, the specific section or sections violated, with recommendations for correcting them, and the action taken to eliminate them. (b) Within seven (7) days after the completion of the inspection, reports shall be posted and distributed as follows: (i) Two (2) copies to the operator, superintendent or foreman; (ii) One (1) copy to a designated representative of the employees' organization, if any, of the mine inspected; (iii) One (1) copy posted on a bulletin board at a prominent place on the premises where it can be conveniently read by the employees and to remain posted until the report of the succeeding examination is posted; (iv) One (1) copy to the inspector. (c) If imminent or serious hazards are found, the person making the inspection shall immediately make an interim report in person or by electronic means.

Wyo. Stat. Ann. § 30-2-210 Notice of violation; correction of condition constituting violation required; penalty upon failure to comply; continuing violations; authority to close operations; right of appeal.

(a) If the inspector or his deputy finds a violation of this act or rules or regulations adopted under it relating to mine operating methods and conditions, he shall notify in writing the person in charge of the mining operation of the condition or method constituting the violation and the provision being violated. The condition or method shall be corrected in five (5) days or other time prescribed by the inspector or his deputy as is reasonable in view of the nature of the condition or method. Allowing a correction period does not prevent the condition or method constituting a violation of this act or a rule or regulation adopted under it. Any person failing to correct a condition or method in the period allowed is guilty of a misdemeanor. Each day during which the condition or method continues uncorrected after notice of correction has been given constitutes a separate violation. (b) If the condition or method is not corrected within a reasonable time, or if the condition or method constitutes a real, present and substantial danger to the lives or safety of persons, the inspector or his deputy may summarily order the cessation of all activity and close the operation or part thereof as the inspector determines constitutes the danger. The order shall be in writing, specifying the nature of the condition, the basis of the action ordered, the date, time and place of the closing of the operation, and the person to whom the order was delivered. The operator may obtain a review of the order by the inspector or by the district court for the county in which the principal part of the operation is located. Review shall be afforded at the earliest possible date within ten (10) days after the filing of the petition or as soon as the court is available. The matter shall be given precedence on the calendar of the court and the proceedings shall be by petition and order to show cause, returnable within ten (10) days. If any action by the inspector or his deputy is found to have been without justification and to have been taken without reasonable basis, the inspector or his deputy shall be liable on his bond for damages resulting therefrom, including reasonable attorney's fees incurred by the operator in the action.

Wyo. Stat. Ann. § 30-2-211 Accident investigation; rescue; reports; generally.

(a) The inspector or his deputy shall proceed immediately to the scene of any mine accident causing loss of life or serious personal injury, any mine fire or any mine explosion, investigate, make recommendations, assist as he deems necessary for the present or future safety of the employees, make a complete report and post and distribute the report under W.S. 30-2-209(b). (b) The inspector or his deputy at the direction of the inspector in consultation with an authorized representative of the mine safety and health administration shall take charge of any necessary mine rescue and recovery work and supervise the reopening of mines that have been sealed or abandoned on account of fire or other cause.

Wyo. Stat. Ann. § 30-2-212 Accident investigation; fatal accidents; procedure; coroner's inquest; notification of inquest.

(a) The inspector, or his deputy when authorized, shall investigate all fatal accidents occurring in connection with mining operations. In his investigation he may compel the attendance of witnesses and administer oaths as if he were a coroner. (b) The inspector, or his deputy when authorized, may order the coroner of the county in which the accident occurred to hold an inquest into the accident. In choosing a jury for the inquest, the coroner shall empanel at least one (1) experienced miner. It is unlawful for the coroner to release the body of any person killed in a mining accident without notice from the inspector that an inquest is not necessary. (c) No inquest shall be held into the death of any person killed in connection with mining operations unless the inspector has been first notified that the inquest will take place and been given a chance to participate. In an inquest the inspector may call, examine and cross-examine witnesses, and he may testify as he deems necessary to thoroughly inform the inquest of the causes of death.

Wyo. Stat. Ann. § 30-2-213 Judicial review of decision of inspector; procedure; payment of costs assessed against inspector; appeal.

(a) Any person aggrieved or adversely affected in fact by a decision of the inspector is entitled to judicial review of the decision in the district court for the county in which the property affected is located, or if no real property is involved, in which the person aggrieved or adversely affected in fact resides or has its principal place of business. The procedure to be followed before the district court shall be in accordance with rules adopted by the Wyoming supreme court except any costs assessed against the inspector shall be paid by the county in which the affected property, if any, is located or in which the person aggrieved or adversely affected in fact resides or has its principal place of business. The district court, in its discretion, may appoint three (3) practical, competent and disinterested persons, who shall, under instructions of the court, forthwith examine the mine and make report under oath of the facts as they exist or may have been, together with their opinion thereon. The report shall become absolute, unless exceptions are filed within ten (10) days after notice of the filing of the report to the person aggrieved or adversely affected in fact and the inspector. If exceptions are filed, the court shall hear and determine the exceptions. The decision shall be final and conclusive, subject only to appeal to the supreme court. (b) Judicial review shall be in accordance with W.S. 16-3-114(c). An interested party may obtain review of any final judgment of the district court under this section by appeal to the supreme court. The appeal shall be taken as in other civil cases.

Wyo. Stat. Ann. § 30-2-301 Board of mines renamed mining council; created; composition; qualifications, appointment and term of members; removal; officers; rules; quorum; vacancies; compensation.

(a) There is created a state board of mines which is renamed the state mining council within the department of workforce services which shall consist of eleven (11) members. Ten (10) members shall be appointed equally from among the management and hourly employees of the mining industry, including surface and underground coal mining, and shall serve for a term of four (4) years and until their successors are appointed and qualified except for the inspector who is a member of the council and entitled to vote in case of a tie. Each member of the council, except the inspector, shall be a qualified elector of the state and shall have at least five (5) years experience in the mining industry immediately preceding his appointment. The members shall be appointed by the governor by and with the advice and consent of the senate and from among the management and employees of the mining industry. The tenure of the members of the council shall be so arranged that the terms of not more than five (5) of the members shall expire in any one (1) year period. The governor may remove any council member as provided in W.S. 9-1-202. The council shall have among its appointed members: (i) An underground coal or gassy mine management official; (ii) A practical underground coal or gassy mine member; and (iii) A mining engineer. (b) The officers of the council are a president and a vice-president, elected by the council from among its members, and a secretary who need not be a member of the council. The council has the power and duty to formulate and adopt rules consistent with the provisions of law to govern its own operation and functions. A majority of the combined council represents a quorum necessary to transact council business. (c) Appointments, terms and the filling of vacancies shall be in accordance with W.S. 28-12-101 through 28-12-103. (d) Members of the council shall receive compensation, per diem and travel expenses in the same manner and amount as the state legislature while going to, attending or returning from council meetings or official committee meetings. An official committee shall be any committee of two (2) or more council members created by a majority vote of a quorum of the council.

Wyo. Stat. Ann. § 30-2-302 State mining council to act in conjunction with inspector.

The council shall act in conjunction with the inspector to improve safety, health, training, examinations and certification of miners in mining operations and mines, in the production and the processing of minerals, and in all installations, equipment and operations constituting a part of mining operations and mines.

Wyo. Stat. Ann. § 30-2-303 Regular and special meetings of mining council; record of proceedings.

Regular meetings of the council shall be quarterly at a place within this state determined by the council. Special meetings may be called at any time by the governor, by the president of the council or by the inspector of mines and shall be called upon the request of any three (3) council members. Full and complete minutes and records of all council meetings, proceedings and actions shall be kept and preserved.

Wyo. Stat. Ann. § 30-2-306 State mining council; examinations for certificates; duty as to examinations generally; meetings; notice of meetings.

The state mining council shall examine applicants for certification as mine foreman and mine examiner, and shall issue certificates of competency to qualified applicants who pass the examination. The council shall meet at least annually in May at Rock Springs to examine applicants for certificates and may meet at other times and places. The council shall decide the day and place of all meetings. At least fifteen (15) days notice of the place and date of every meeting of the council held for the purpose of examining applicants shall be given by publication in a newspaper published in the area where the examination is to be held, and by posting copies of the published notice at all mines in the vicinity of said place. A meeting held pursuant to this section may be held in conjunction with regular council meetings required by W.S. 30-2-303.

Wyo. Stat. Ann. § 30-2-307 State mining council; nature of examination generally; grading; record to be kept; public inspection of record; fees for examination and certificate; replacement.

(a) The state mining council shall ascertain the experience, knowledge and understanding of each applicant for the position for which he desires a certificate. The council shall examine applicants for mine examiner and mine foreman both orally and in writing. To obtain a certificate the applicant shall obtain a total weighted average grade of seventy-five percent (75%). A complete record shall be made of each examination, including all questions and answers, both oral and written. The record shall be filed with the inspector and maintained permanently as a public record. (b) Each applicant shall pay an examination fee which shall be set annually by the council and shall be based upon anticipated testing expenditures. The council upon satisfactory proof of loss or destruction of a certificate shall issue a duplicate upon receipt of five dollars ($5.00). All fees collected by the council shall be deposited with the state treasurer and credited to a separate account and shall be used for the administration of the mine foreman and mine examiner certification examinations.

Wyo. Stat. Ann. § 30-2-308 Mine foremen; when required; duties; mines to be supervised by certified personnel.

Each underground mine with one (1) or more persons present underground shall be supervised by a certified mine foreman who shall ensure compliance with mining laws regarding his duties and the health and safety of mine employees. A certified mine foreman shall remain underground when persons are present underground unless authorized by a variance issued by the council. The mine foreman shall not permit any person to work in an unsafe place unless it be for the purpose of making it safe. Work for the purpose of making a place safe shall be under the direct supervision of a certified mine foreman. The mine foreman shall provide data and information regarding the operation of the mine required by the inspector.

Wyo. Stat. Ann. § 30-2-309 Mine foreman and mine examiner certificates; qualifications; certificate required; reciprocity; council duties.

(a) No person shall act as mine foreman or safety engineer at any underground mine unless he holds a mine foreman certificate for the type of mineral being mined. To obtain a mine foreman certificate for a particular mineral an applicant shall pass the required examination for the particular mineral. An applicant for the mine foreman examination shall: (i) Be at least twenty-three (23) years of age; (ii) Except as otherwise provided, provide verifiable documentation that he has at least three (3) years practical experience in the mining of the mineral in which he desires to hold a mine foreman certificate. Practical experience shall be determined from practical work of a "hands-on" nature, directly related to the hazards involved in the type of mine for which the certificate is sought. Underground coal mine experience shall qualify for gassy metal or nonmetal mine experience. The council may grant one (1) year's experience credit for not less than five (5) years' experience in an underground gassy metal or nonmetal mine for underground coal mine experience. Surface mine experience in a different mineral may be considered by the council when qualifying an applicant to take the examination for surface foreman certification. The council may grant one (1) year experience credit for not less than ten (10) years experience in another type of mine or in an industry similar in nature to mining; (iii) Complete and timely file an examination application; (iv) When the applicant seeks to receive practical experience credit for holding a mining engineering degree, provide verifiable documentation of the degree; and (v) Hold a valid mine examiner's certificate. (b) No person shall act as a mine examiner in any underground mine unless he holds a mine examiner certificate for the type of mineral being mined. To obtain a mine examiner certificate for a particular mineral an applicant shall pass the required examination for the particular mineral. An applicant for the mine examiner examination shall: (i) Provide verifiable documentation that he has at least two (2) years practical experience in the type of mineral mined in which he desires to hold a mine examiner certificate. Practical experience shall be determined from practical work of a "hands-on" nature, directly related to the hazards involved in the type of mine for which the certificate is sought. Underground coal mine experience shall qualify for gassy metal or nonmetal mine experience. Gassy metal or nonmetal mine experience shall not qualify for underground coal mine experience; (ii) Complete and timely file an examination application; (iii) Be at least twenty-three (23) years of age; and (iv) When the applicant seeks to receive practical experience credit for holding an engineering degree, provide verifiable documentation of the degree. (c) A mining engineering degree from an accredited college or university shall be considered the equivalent of one (1) year practical experience for mine foreman certificate and one (1) year for mine examiner certificate. An approved degree from an accredited college or university which degree is related to mining may be considered the equivalent of one (1) year practical experience for mine foreman certificate and one (1) year for mine examiner certificate. In no case shall practical experience credit for a degree, mining experience credit or a combination thereof exceed one (1) year for a mine foreman certificate or one (1) year for a mine examiner certificate. For purposes of this section a degree shall be limited to a baccalaureate, master's or doctorate degree. (d) Any person holding a certificate of competency from a proper examining board of any state with which Wyoming has a reciprocal agreement may perform the duties in Wyoming for which his certificate certifies that he is competent, without examination by the state mining council. Before assuming any duties in a mine, the person shall present his certificate to the council through the inspector and secure approval of the certificate by the council. The person is subject to examination by the council at the request of the inspector. The person's authority to act in Wyoming as mine foreman, mine examiner or safety engineer may be cancelled in the same manner as certificates issued by the council. No person shall employ any mine foreman, mine examiner or safety engineer in an underground mine who does not possess the certificate of competency required. (e) The state mining council shall include in its rules for implementation of this article, the following: (i) Procedures for review and approval of a study manual prepared by industry to provide guidance to those taking the examinations; (ii) Procedures for preparing the examinations by the council or a committee of council members appointed for this purpose, provided that final approval of the examination shall be made by the council; (iii) Procedures for grading examinations; (iv) Procedures for reviewing the examination results by an applicant with a designated committee of the council and provisions for appeal by an applicant of any adverse decision of the council; (v) Each examination shall include questions to ascertain the applicant's general knowledge of mining practices in the type of mine and mineral involved, including but not limited to ventilation, health and safety, rescue and recovery work involved following mine disasters, detection and control of gasses, fire and explosion prevention and control, use of blasting procedures, electricity and mine equipment and knowledge of the applicable state mining laws. The examination shall also properly identify the importance of any single question which if not answered correctly would cause failure of the entire examination; (vi) Criteria for granting experience credit for purposes of this section. (f) Repealed By Laws 2003, Ch. 5, § 2.

Wyo. Stat. Ann. § 30-2-310 Temporary permit; when permitted; expiration; subsequent examination required.

(a) The inspector, upon consent of the state mining council, may issue to an applicant a temporary permit to operate as a mine foreman or mine examiner without a certificate if the applicant meets the requirements of W.S. 30-2-309 other than the examination requirement. The temporary permit shall expire on the date of the next examination given by the council after issuance of the temporary permit. A person issued a temporary permit under this section for a particular type of mineral shall not be issued an additional temporary permit for the same type of mineral if he failed: (i) The certification examination for that type of mineral; or (ii) To take the certification examination for that type of mineral.

Wyo. Stat. Ann. § 30-2-311 Revocation of certificate after notice and hearing; suspension; reexamination; revocation of certificate of inspector or deputy; filing of certificate.

(a) Any certificate issued by the council or temporary permit issued by the inspector may be suspended or revoked by the council for violation of this act or rules and regulations promulgated under this act, intoxication while in duty status, mental disabilities or neglect of duty. Except as otherwise provided, the council may revoke or suspend a certificate or temporary permit only after a hearing in accordance with the Wyoming Administrative Procedure Act. The council may suspend any certificate or temporary permit pending further investigation and hearing, for actions that pose a serious threat to the health and safety of miners. The council shall establish by rule a time limit after the alleged date of an incident as provided in this subsection within which a complaint shall be filed. All complaints shall be verified and filed in accordance with the rules and regulations promulgated by the council. The council or designated members of the council may, after reviewing the complaint and conducting any investigation deemed necessary, determine that the grounds alleged do not warrant suspension or revocation and dismiss the complaint without hearing. No person whose certificate has been revoked under this section for less than ninety (90) days shall be examined by the council. No person whose certificate has been revoked under this section shall be reissued a certificate unless the council finds the incapacity, if any, on which the revocation was based has ceased to exist. (b) When the council revokes the mine foreman certificate of the inspector or a deputy inspector, the governor shall forthwith remove such person from office. (c) The holder of a mine foreman or mine examiner certificate shall present it to the official of the mine where he is employed, who shall file it in the mine office. The certificate shall be made available for inspection by interested persons.

Wyo. Stat. Ann. § 30-2-312 Optional certifications of surface mine foremen and mine examiners; surface mine operators not required to employ.

(a) The state mining council may certify a mine foreman, safety engineer or mine examiner desiring to work in a surface mine upon request by an applicant for the certificate. Certificates shall be issued under W.S. 30-2-307 and 30-2-309(a) through (d). Applicants and certificate holders are subject to W.S. 30-2-310 and 30-2-311. (b) No owner or operator of a surface mine is required to employ a certified mine foreman, safety engineer or mine examiner.

Wyo. Stat. Ann. § 30-2-401 Safety rules; posting; responsibility for observance.

All owners, operators and mine site contractors shall post in a conspicuous place and make available to all employees the rules and duties of safety governing their employment. Employees are responsible for the observance of all the rules and safety practices in all phases of their work.

Wyo. Stat. Ann. § 30-2-402 Annual report to inspector; contents.

The owner, operator or mine site contractor of any mining operation shall report annually to the inspector before January 31 of each year. The report shall contain the names of the owners, operators and mine site contractors, the post office address, the name of the claim to be operated, the number of persons employed, classified as to occupation, the name of the county mining district, and the tonnage produced during the previous calendar year, upon forms furnished by the inspector.

Wyo. Stat. Ann. § 30-2-403 Record of accidents to be kept; inspection of record; reports filed with inspector; report of serious accidents.

(a) The owner, operator or mine site contractor shall keep a record of all accidents occurring in connection with mining operations. The record shall be open to the inspector or his deputies at all times. (b) In all compensable injuries, the owner, operator or mine site contractor shall send to the inspector a copy of the report of injury form filed in worker's compensation cases. (c) A mine owner, operator or mine site contractor shall immediately notify the inspector's office in person or by conversing with an individual of that office by telephone of any of the following occurrences: (i) An accident that has caused a fatality or serious injury; (ii) Any explosion of gas or dust underground; (iii) Any fire occurring underground or in any structure immediately adjacent to or attached to any mine opening; (iv) A cave-in or roof or rib fall which: (A) Impairs ventilation; (B) Impedes passage to and from work; or (C) Has the potential to cause a serious injury. (v) Damage to hoisting equipment, shafts or slopes which cause delay of normal operations.

Wyo. Stat. Ann. § 30-2-404 Notification of change in ownership, etc., of mining property.

The inspector shall be informed promptly of any change in the name, ownership or operator of any operating mining property.

Wyo. Stat. Ann. § 30-2-405 Notice as to commencement of operations.

(a) Repealed By Laws 2005, ch. 106, § 2. (b) The owner or operator of a mine shall notify the inspector whenever a new mine is opened, or whenever an existing mine is either closed or reopened. The notice shall be given immediately before the happening of the event, and shall specify the date upon which the event will occur.

Wyo. Stat. Ann. § 30-2-406 Barrier pillars required; penalty for failure to leave.

(a) The operator of every mine which has another coal or mineral property contiguous or immediately adjacent to it shall leave barrier pillars at least fifty (50) feet in width along the boundary line of the contiguous coal or mineral property. Owners of adjacent properties are not prohibited from extracting the coal or mineral along the boundary line if they enter into a written agreement providing the pillars may be pulled. (b) Any person violating subsection (a) of this section is guilty of a misdemeanor punishable by a fine of not less than five hundred dollars ($500.00) nor more than one thousand dollars ($1,000.00), or by imprisonment of not more than six (6) months, or both.

Wyo. Stat. Ann. § 30-2-407 Abandonment or closing down of mine; procedures to be followed.

(a) No owner or operator shall abandon or indefinitely close down any underground mine until the inspector performs a final inspection. (b) Upon abandonment or closing down of an underground mine, the owner or operator shall effectively close or fence off all surface openings through which persons or animals could fall or enter. (c) Upon abandonment or closing down of a strip or open-pit mine, mining or prospecting pit or excavation, appropriate action shall be taken where necessary to safeguard against injury to persons or animals. (d) Within thirty (30) days after abandonment or closing down of any underground mine, the owner or operator shall file with the inspector a map showing all pertinent data as of the date of closing or abandonment in the form prescribed by the inspector. The map and all data shown thereon shall be confidential and not open for public inspection until (2) consecutive years have elapsed without resumption of mining activity, unless release has been authorized in writing by the owner or unless release is necessary for safety reasons shown by an adjoining operator or other person.

Wyo. Stat. Ann. § 30-2-408 Maps of mines to be made; contents; semiannual revision; maintenance and filing.

(a) The owner or operator of each mine shall make an accurate map or plan of the mine and mine workings on a scale not exceeding two hundred (200) feet to the inch or as otherwise approved by the inspector. The map or plan shall: (i) Exhibit all openings or excavations, shafts, tunnels, slopes, planes, gangways, entries, cross headings, rooms and installations related to safety; (ii) Show the direction of air currents in the mine; (iii) Accurately delineate the boundary line between the mine and adjoining mines; (iv) Be prepared with reference to and show the boundaries of the legal subdivision in which the mine is located; (v) Be accurately brought up to date every six (6) months. (b) The owner or operator shall: (i) Maintain a copy of each map or plan for use at the mine by the inspector, his deputy or any miner employed at the mine; (ii) File a copy of each map or plan with the inspector; (iii) Maintain a copy of the current map or plan on bulletin boards near mine entrances and at all principal working stations.

Wyo. Stat. Ann. § 30-2-409 Survey and platting of underground workings by county surveyor; fees; notice to mine owner; hindering surveyor prohibited; penalty.

(a) The county surveyor shall, upon the written request of an adjoining landowner, enter and make a complete, true and accurate survey and plat of the underground workings of any mine in the county to ascertain the location of the workings with respect to the boundary line of the property of the adjoining landowner. The county surveyor shall make an official plat and report of the survey to the adjoining landowner. The county surveyor shall receive from the adjoining landowner the same fees allowed by law for county surveying. If the county surveyor is interested in either of the adjoining properties or is not qualified to make the survey, he shall call a competent engineer who is not interested in the properties to make the survey and plat. The county surveyor may take any necessary action to aid him in making the survey and plat. The county surveyor shall give the mine owner or operator ten (10) days written notice of the date the survey will begin. (b) The owner, operator or any person in charge of any mine shall not hinder, delay or prevent the county surveyor, or engineer substituted for him from entering the mine, from making the survey and plat, or from performing his duties under subsection (a) of this section. Any person violating this subsection is guilty of a misdemeanor punishable by a fine of not more than one thousand dollars ($1,000.00), or by imprisonment for not more than six (6) months, or both.

Wyo. Stat. Ann. § 30-2-501 Blasting to be done by certified shot-firers or certified trona utility shot-firers; qualifications and examinations; issuance of certificate; revocation of certificate; requirements when work being done.

(a) All blasting or shot-firing in mines, including charging and tamping of holes shall be done by or under the direct supervision of certified shot-firers. Shot-firers shall pass an oral and written examination prepared and administered by the inspector or his deputies testing knowledge of blasting and shot-firing operations and safety procedures. To take the shot-firer exam the applicant shall have at least two (2) years practical, hands-on experience in the type of operation for which he is applying. The state mine inspector shall give one (1) year experience credit for two (2) years mine engineering experience related to shot-design and shot-planning. An applicant may receive a maximum of one (1) year experience credit for mine engineering experience. Each applicant must provide verifiable documentation of his practicable experience or mining degree and experience. (b) The inspector or his deputies shall certify shot-firers and shall issue certificates to qualified persons. A shot-firer's certificate may be revoked by the inspector or his deputies after notice and hearing under W.S. 16-3-101 through 16-3-115, if the holder has violated laws governing firing of any shots or blasts, or has endangered life or property by his actions as a shot-firer. (c) No miner shall return to any place where shots or blasts have been fired, until given permission by the shot-firers or other mine officials authorized by law. When shot-firers are engaged in the work of firing shots, the shot-firing cable must be disconnected from battery, and cable leads must be short circuited at battery and before connection is made to detonating cap at face. All employees other than the one (1) connecting cable to cap at face are forbidden to handle battery while the work of firing shots is being carried on. The cable connecting battery to detonating cap or caps shall be not less than one hundred fifty (150) feet in length. (d) Blasting other than the extraction of an in-situ trona mineral for production purposes, including charging and tamping of holes, shall be done by or under the direct supervision of certified trona utility shot-firers or certified shot-firers. (e) Each trona utility shot-firer applicant shall: (i) Be at least twenty-three (23) years of age; (ii) Have at least two (2) years mining or blasting experience before taking the trona utility shot-firer examination; (iii) Complete and file an examination application with the state mine inspector; (iv) Pass an oral and written examination prepared and administered by the inspector or his deputies testing knowledge of blasting and shot-firing operations and safety procedures; (v) Provide verifiable documentation that he has completed the training required by paragraph (ii) of this subsection and any requirement included in the trona utility blasting training plan as approved by the state mine inspector. (f) Each mine operator shall submit for approval by the Wyoming state mine inspector, a trona utility blasting training plan outlining training requirements, safe blasting procedures and methods. The training plan shall include a record of a practical, "hands-on" demonstration of competency. The plan shall require that no single round shall exceed one hundred fifty (150) pounds of explosives.

Wyo. Stat. Ann. § 30-2-502 Shots missed or not fired; report; search to recover undetonated explosive.

(a) The shot-firer or trona utility shot-firer shall immediately after the completion of his work, report in writing to the proper official, any shots missed or not fired, their location and the reason therefor. (b) A misfired shot shall be handled under the direct supervision of the mine foreman or a certified person designated by him. (c) A search by the mine foreman or certified person designated by him of the working place, and, if necessary, the material, shall be made after blasting a misfired hole to recover undetonated explosive.

Wyo. Stat. Ann. § 30-2-503 Prohibited acts.

(a) No person shall alter or change any drill hole after it has been approved by the shot-firer or the trona utility shot-firer. (b) No shot-firer or trona utility shot-firer, whether voluntarily or by command or request of any person, shall fire any unlawful shot, or any shot which is not a workmanlike, proper and practical shot. (c) No person shall order, command or induce any shot-firer or trona utility shot-firer to fire any unlawful shot, or any shot which is not a workmanlike, proper and practical shot. (d) No person shall drill or shoot a dead hole. A "dead hole" is a hole where the width of the shot at the point measured at right angles to the line of hole is so great that the heel is not of sufficient strength to at least balance the resistance at the point. The "heel" means that part of the shot which lies outside of the collar.

Wyo. Stat. Ann. § 30-2-601 Sale of explosives; date of manufacture to be marked; sale within 12 months of manufacture.

All nitroglycerine, powder or other high explosive sold in this state shall be properly marked with the date of manufacture on each stick of powder. No nitroglycerine, powder or other high explosives shall be sold after twelve (12) months from date of manufacture.

Wyo. Stat. Ann. § 30-2-602 Storage of flammable materials; smoking restricted; fire doors.

(a) Surface storage of oils, grease and other flammable materials shall be in a storage area located at a safe distance from the powder magazine. Flammable materials shall be removed from the storage area for use only in quantities necessary to meet the requirements of a day. Structures in the storage area shall be of fire-resistive material and well ventilated. Tight metal receptacles shall be provided for oily waste. (b) Smoking in or about surface structures shall be restricted to places where it will not cause fire or an explosion. (c) Unless existing structures located within one hundred (100) feet of any mine opening are of reasonably fireproof construction, fire doors shall be erected at effective points in mine openings to prevent smoke or fire from outside sources endangering men working underground. These doors shall be tested at least monthly and kept in effective operation.

Wyo. Stat. Ann. § 30-2-603 Flammable liquids; flame safety and electric lamps.

(a) Naphtha or other flammable liquids in lamp houses shall be kept in approved containers or other safe dispensers approved by the inspector. (b) Flame safety lamps shall be permissible and maintained in permissible condition. All flame safety lamps shall be checked by the persons using them and by a qualified lamp attendant, or by a mine examiner, immediately before entering the mine. (c) When not in service, flame safety lamps and electric lamps shall be under the charge of a responsible company employee.

Wyo. Stat. Ann. § 30-2-604 Requirements as to surface magazines; storage of explosives; explosion-proof illumination; use of nonmetallic tools.

(a) Separate surface magazines shall be provided for the storage of explosives and detonators. (b) Surface magazines for storing and distributing high explosives shall be: (i) Reasonably bulletproof and constructed of incombustible material or covered with fire-resistive material. The roofs of magazines so located that it is impossible to fire bullets directly through the roof from the ground, need not be bulletproof, but where it is possible to fire bullets directly through them, roofs shall be made bullet-resistant by material construction, or by a ceiling that forms a tray containing not less than a four (4) inch thickness of sand, or by other methods; (ii) Provided with doors constructed of three-eighths (3/8) inch steel plate lined with a two (2) inch thickness of wood, or the equivalent; (iii) Provided with floors made of wood or other nonsparking material and have no metal or gravel exposed inside the magazine; (iv) Provided with suitable warning signs so located that a bullet passing directly through the face of a sign will not strike the magazine; (v) Provided with properly screened ventilators. Equipped with no openings except for entrance and ventilation; (vi) Kept locked securely when unattended. (c) High explosives may also be stored in box-type distributing magazines which shall be constructed and used in accordance with rules established by the inspector. (d) Main storage magazines shall be not less than one thousand (1,000) feet from any mine opening unless effectively barricaded. (e) The supply kept in distributing magazines shall be limited to approximately one (1) day's requirements. Supplies of explosives and detonators may be distributed from the same magazine, if separated by at least a four (4) inch substantially fastened hardwood partition or the equivalent. (f) The area surrounding magazines for not less than twenty-five (25) feet in all directions shall be kept free of rubbish, dry grass, or other materials of a combustible nature. (g) If the explosives magazine is illuminated electrically, the lamps shall be of explosion-proof type, installed and wired so as to prevent minimum fire and contact hazards. (h) Only nonmetallic tools shall be used for opening containers. Extraneous materials shall not be stored in an explosives or detonator magazine. (j) Smoking, carrying smoker's articles, or open flame shall be prohibited in or near any magazine. (k) Blasting agents shall be used and stored in accordance with rules established by the inspector. (m) Contents stored in magazines pursuant to this section shall be inventoried once a month or after each use.

Wyo. Stat. Ann. § 30-2-605 Requirements as to underground magazines; use of nonmetallic tools.

(a) Underground magazines shall be of substantial construction and placed in a crosscut or idle room neck at least twenty-five (25) feet from roadways or trolley wires and in a reasonably dry and well-rock-dusted place. The explosives and detonators shall be kept in separate boxes or magazines, but may be kept in the same box if separated by at least a four (4) inch substantially fastened hardwood partition or the equivalent. Not more than a forty-eight (48) hour supply of explosives, including any surplus remaining from the previous day, shall be stored underground in boxes or magazines. The inspector may approve variances in writing to the forty-eight (48) hour supply limit if the safety of miners is not adversely affected. (b) Explosives and detonators kept near the working faces shall be stored in separate, closed containers of substantial, nonconductive material located not less than fifteen (15) feet from rail or power lines, except if kept in a niche in the rib, the distance shall be at least five (5) feet, and in a location out of line of blast where they will not likely be subjected to shock. (c) Explosives and detonators shall be kept in their containers until removed for use at the working faces. (d) Only nonmetallic tools shall be used for opening explosives containers underground. (e) Underground explosives magazines and storage boxes shall be kept securely locked when unattended. (f) Underground explosives magazines and storage boxes shall be provided with signs indicating their contents. (g) Contents stored in magazines and storage boxes pursuant to this section shall be inventoried at least once a month and after each use.

Wyo. Stat. Ann. § 30-2-606 Requirements as to explosives carried underground.

(a) Permissible explosives or detonators carried underground shall be in individual containers constructed of substantial nonconductive material, maintained in good condition and kept closed. (b) When explosives or detonators are transported underground by locomotive, rope, or shuttle car, they shall be in special covered cars or in special containers. (c) The bodies and covers of special cars and the containers shall be constructed of nonconductive material. (d) If the explosives and detonators are hauled in the same explosives car or in the same special container, they shall be separated by at least a four (4) inch substantially fastened hardwood partition or the equivalent. (e) Explosives and detonators shall not be carried on the same man-trip with workmen. (f) Where quantities of explosives and detonators are transported in special cars or in special containers in cars, they shall be hauled on a special trip, and shall not be hauled into or out of a mine within five (5) minutes preceding or following a man-trip or any other trip. (g) Explosives or detonators shall not be transported on flight or shaking conveyors, scrapers, mechanical loading machines, locomotives, cutting machines or drill trucks.

Wyo. Stat. Ann. § 30-2-607 Only permissible explosives or blasting devices to be used; requirements as to use.

(a) Only permissible explosives or permissible blasting devices shall be used in all underground coal mines for the blasting of coal or other blasting operations, except as otherwise provided by law. (b) The use of permissible explosives shall comply with the following: (i) Fired only with electric detonators of proper strength; (ii) Fired with permissible blasting units unless blasting is done from the surface; (iii) Boreholes in coal shall not be drilled beyond the back of the cut, nor into the solid rib, roof or floor; (iv) Boreholes shall be cleaned and checked to see that they are placed properly and are of correct depth, in relation to the cut, before being charged; (v) To prevent blow-throughs, all portions of the boreholes where the height of the coal permits, shall have a burden in all directions of at least eighteen (18) inches before being fired; (vi) Boreholes shall be stemmed to the collar with incombustible material; (vii) In gassy mines examinations for gas shall be made immediately before and as soon as practicable after blasting. (c) Charges exceeding one and one-half (1 1/2) pounds, but not exceeding three (3) pounds, shall be used only if boreholes are six (6) feet or more in depth, and explosives are charged in a continuous train, with no cartridges deliberately deformed or crushed, with all cartridges in contact with each other, and with the end cartridges touching the back of the hole and the stemming respectively, and Class A or Class B permissible explosives are used, provided that the three (3) pound limit shall not apply to solid rock work such as solid rock tunnels, shafts, etc. (d) Boreholes shall not be charged while any other work is being done at the face. A shot shall be fired before any other work is done, except work necessary to safeguard the employees. (e) Only wooden tamping bars shall be used when charging holes. (f) Leg wires of electric detonators shall be kept shunted or the ends twisted together until ready to connect to the firing cable. (g) Shots shall not be fired from the power or signal circuit. (h) Roof and faces of working places shall be tested immediately before and after blasting. (j) Ample warning shall be given before shots are fired, and care shall be taken to ascertain that all persons are in the clear. Men shall be removed from adjoining working places when there is danger of a shot blowing through. (k) Mixed charges shall not be charged or fired in any borehole. (m) Adobe (mudcap) or other open, unconfined shots shall not be fired in any mine. (n) Blasting cables shall be well insulated, staggered as to length or kept well separated when attached to the detonator leg wires, and kept clear of power wires and other possible sources of stray currents. (o) Power wires in face regions shall be deenergized during charging and blasting operations. (p) Where misfires occur with electric detonators, a waiting period of at least five (5) minutes shall elapse before anyone returns to the shot. After such failure, the blasting cable shall be disconnected from the source of power and the battery end short-circuited before electric connections are examined. (q) Explosives shall be removed by firing a separate charge at least two (2) feet away from, and parallel to, the misfired charge or by washing the stemming and the charge from the borehole with water, or by inserting and firing a new primer after the stemming has been washed out.
Source: WY Statutes (Official Site)URL: https://wyoleg.gov/statutes/compress/title30.pdfFetched: 10/4/2026