A. Coal dust shall not be permitted to accumulate excessively in any part of the active areas, including any active workings that are soon to be worked-out.

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B. Where an underground mining operation creates or raises an excessive amount of coal dust into the air, any coal dust on the ribs, roof, or floor shall undergo an application of water or water with a wetting agent added to it or another effective method, approved by the Chief or his authorized representative, of controlling dust to reduce dispersibility and minimize the risk of explosion. Such application or method shall occur within 40 feet of any active workings or such other area as the Chief or his authorized representative requires.

Code 1950, § 45-77.1; 1954, c. 191; 1966, c. 594, § 45.1-66; 1994, c. 28, § 45.1-161.234; 1996, c. 774; 2021, Sp. Sess. I, c. 387.