Dust is not the problem you think it is.
Flour mills and granaries and wood shops DO have explosive seeming accidents. They are flash fires, finely divided particles in suspension.
They tried high voltage discharge, and the BP has so much Carbon, a good conductor, and the graphite coating, to conduct the discharge from granule to granule, none can cause enough HEAT to ignite the powder. Lightning could, as it is millions of volts, and the temps can be very high.
You ain't gonna shuffle across the carpet and build up enough static charge to blow up your flask, or your loader, if you are using a measure for your BP.
AND, the measure makers are changing their minds, too, actually, you CAN use the plastic hoppers to hold BP to measure it into Cowboy cartridges.
Not too long ago it was tabboo to to use a smokeless hopper, nobody bought special metal BP measures or reservoirs, so they said, Well, we have tested and there is no problem. (Although we DID sell a bunch of "safe" BP hoppers to the gullible.)
Don, I think, should be a little more careful, as he has more problems than the rest of us.
Cheers,
George