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Every plant, factory, workshop, or other premises in which dust is produced, or is a by-product, in such quantities as to create a hazard, shall be equipped with an approved pneumatic or mechanical dust collection system designed, maintained, and operated to keep all hazardous accumulations of dust from such premises, including all enclosed and inaccessible areas and spaces.
No person shall permit the accumulation of any flammable or explosive dust in quantities sufficient to create a fire or explosion hazard on floors, walls, ledges, or other exposed building structural members, piping, conduit, electrical equipment, or on the roof of any building on which dust may settle. Metallic dust shall be stored in tightly covered metal containers in a cool, dry place.
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