On 28 Mar 2006 15:50:40 -0800, wrote:

sure, in big industrial facilities with dust systems moving tons of
material per hour the risk is real, and the measures taken to control
static discharge are vital.

No, the situation is exactly the same. It's a question of max possible
discharge energy vs. minimum energy needed to initiate a dust explosion.
These don't change for industrial scale wood dust collectors - the
volumes get bigger, the densities don't.