A. The main intake and return air currents of a drift or slope mine shall not be in a single partitioned opening.
B. Every entry driven in coal shall be in a set of two or more entries.
C. Every transformer station, battery-charging station, substation, rectifier, and water pump shall be housed in an incombustible structure or area or be equipped with an approved fire suppression system. Each such installation shall be ventilated with intake air that is coursed into a return air course or to the surface and that is not used to ventilate any working place. This requirement does not apply to any (i) rectifier, battery-charging station, or power center with transformers that are of the dry type or contain nonflammable liquid, if such rectifier, battery-charging station, or power center is located at or near the working section and is moved as the working section advances or retreats; (ii) submersible pump; (iii) permissible pump and associated permissible switch gear; (iv) pump located at or near the working section that is moved as the working section advances or retreats; or (v) small portable pump. Such equipment shall be installed and operated only in a well-ventilated location.
D. Any change in ventilation that materially affects the main air current or any split thereof shall be made when the mine is not in operation and there are no miners in the mine other than those engaged in changing the ventilation.
E. Each section in a mine shall be ventilated by a separate split of air.
F. Air used to ventilate a belt haulage entry shall not be used to ventilate any working place unless approved by the Chief.
Code 1950, §§ 45-60.4, 45-71; 1954, c. 191; 1966, c. 594, § 45.1-57; 1978, c. 120; 1994, c. 28, § 45.1-161.221; 1996, c. 774; 1999, c. 256; 2021, Sp. Sess. I, c. 387.
Structure Code of Virginia
Title 45.2 - Mines, Minerals, and Energy
Chapter 8 - Requirements Applicable to Underground Coal Mines; Electricity, Safety, Etc
§ 45.2-800. Face and other equipment
§ 45.2-801. Shop and other equipment
§ 45.2-803. Surface electrical installations
§ 45.2-804. Surface transformers
§ 45.2-805. Underground transformers
§ 45.2-806. Stations and substations
§ 45.2-808. Trolley wires and feeder wires
§ 45.2-810. Circuit breakers and switches
§ 45.2-811. Communication systems
§ 45.2-812. Electrical equipment
§ 45.2-814. Inspection of electrical equipment and wiring; checking and testing methane monitors
§ 45.2-815. Repairs to circuits and electric equipment
§ 45.2-816. Underground illumination
§ 45.2-817. Inspection of electric illumination equipment
§ 45.2-818. Firefighting equipment; fire prevention
§ 45.2-819. Duties in case of fire
§ 45.2-820. Emergency response plans; list of next of kin
§ 45.2-821. Reporting fires; response
§ 45.2-822. Fire prevention in transportation of mining equipment
§ 45.2-823. Storage and use of flammable fluids and materials
§ 45.2-824. Diesel-powered equipment
§ 45.2-825. Arcs, sparks, and flames
§ 45.2-826. Pre-shift examinations
§ 45.2-827. on-shift examinations
§ 45.2-828. Weekly examinations
§ 45.2-829. Examinations of fans
§ 45.2-830. Record of examinations
§ 45.2-831. Notice of hazardous conditions
§ 45.2-832. Notice of monitor tampering prohibition
§ 45.2-839. Actions for excessive methane
§ 45.2-841. Permanent stoppings
§ 45.2-842. Ventilation controls
§ 45.2-844. Ventilation with air from certain areas
§ 45.2-847. Examination of mine for explosive gas and other hazardous conditions
§ 45.2-848. Tampering with methane monitoring devices prohibited; penalty
§ 45.2-850. Intentionally bypassing a safety device; prohibition
§ 45.2-851. Control of coal dust
§ 45.2-853. Checking system; tracking system
§ 45.2-854. Protective clothing
§ 45.2-855. Noise levels and ear protection
§ 45.2-856. Smoking materials prohibited; penalty
§ 45.2-857. Allowing persons to work in a mine with smoker's articles; penalty
§ 45.2-859. Smoking in surface and other areas
§ 45.2-860. Portable illumination
§ 45.2-861. First aid equipment