Dust explosions and fires in factories occur frequently, though you don't often hear about them. (try this: Google "factory dust explosion"). The more catastrophic ones like at Imperial make national headlines. Don't minimize or dismiss this risk factor. If you are considering the purchase of an industrial dust collector from any manufacturer, please have your dust tested and your application carefully reviewed. Don't rush just to get any dust collection system installed to get OSHA off your back. You likely already have some idea if you have combustible dust. Do some homework. Please prevent another tragedy.