Combustible dust is fine particulate dust generated from organic products such as wood, metals, grains, agricultural, chemicals, plastics, paper and carbonaceous products. Manufacturing and production facilities equipment and machinery pulverize, mill, grind, crush, macerate and cut the bulk product. In return, dust is generated and accumulates on all equipment and facility structure surfaces. The fine powder dust, which is suspended on the higher, inaccessible and unnoticeable surfaces, is the most problematic for combustible dust.