On 27-Mar-2006, Mark & Juanita wrote:

I seriously
doubt that static electricity has enough energy to ignite a dust explosion.

That depends on how much static and how fine the dust. While I doubt
that walking across a carpet and then touching a dust collector would do it,
the kind of dusts that can be found in silos of anything (and bulk carriers being
loaded etc) in conjuction with a significant static source could do it.
Continuously running equipment can continuously generate static.

Mike