Combustible dust can be formed by milling, sanding, grinding, crushing, cutting or simply handling material that is in powder form. In 2008, following several news-worthy mill explosions, OSHA reissued CPL 03-00-008, which outlines recommendations and guidelines for decreasing combustion risk. Safety organizations continue to focus on this problem and the ways to reduce it. Both OSHA, the FDA and NFPA prefer housekeeping methods that employ vacuum. Hoffman & Lamson central vacuum systems offer advanced explosion proof valves, panels and other features for the ultimate safe and clean environment.