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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.
When plastic polymer technology was not much in use Waxed Paper or card board paper was used to wrap soaps, cookies and a host of other fragile items. Wax makes the paper stiff, water resistant and moisture proof. Wax is environmentally benign and non toxic to humans. Even now as a green measure we see fruit juice packs on such cardboard papers.