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A. Coal dust shall not be permitted to accumulate excessively in any part of the active areas, including active workings soon to be worked-out. B. Where mining operations create or raise an excessive amount of coal dust into the air, water or water with an added wetting agent, or other effective method of controlling dust approved by the Chief, or his authorized representative, shall be applied to coal dust on the ribs, roof, and floor to reduce dispersibility and to minimize the hazard of explosion, within forty feet from all active workings or such other areas as the Chief or his authorized representative shall require. Code 1950, § 45-77.1; 1954, c. 191; 1966, c. 594, § 45.1-66; 1994, c. 28 ; 1996, c. 28 .
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