" 'Our preliminary information shows that there have been 150 dust explosions resulting in more than 80 deaths over the past two decades,' CSB representative Dan Horowitz says. Hoyle, who is heading the investigation, traveled to Baltimore in October to attend a meeting of NFPA's Technical Committee on Handling and Conveying of Dusts, Vapors, and Gases, which has jurisdiction over NFPA 654."
You need to do something. It would seem half the explosions in the US are happening where you live.
The folks at NFPA will remind you that proper particle composition, size, dispersal but overall confinement, and the availability of oxygen don't guarantee an explosion. Even the ignition source has to fall within a fairly narrow set of parameters.
That's why dust explosions so rare. Now explosions resulting from "dust" off-gassing, like plastics and such are more common, but they're not really dust explosions, nor are they so picky in their conditions.