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Combustible dust explosion hazards exist in a variety of industries, including food (e.g., candy, starch, flour, feed), plastics, wood, rubber, furniture, textiles, pesticides, pharmaceuticals, dyes, coal, metals (e.g., aluminum, chromium, iron, magnesium, and zinc), and fossil-fuel power generation.
Computer-cleaning dusters actually contain a liquefied gas, which functions as the products propellant (similar to any other aerosol product on the market). The only difference is in other aerosol products the propellant is used to propel a product (hair spray, cooking spray, insecticide, etc) through the nozzle.