Friend Ken,
<br>Funny you should mention not using flour. The following is apropo of nothing I suppose but don't anyone tell me it is impossible or that it can't happen. To shamelesly steal the title of Uncle Elmer's book. Hell, I was there.
<br>When I used to do CW reenacting I sometimes worked a cannon crew. It was sop to add about a pound of flour ahead of the charge to make more "smoke" for the crowd when fireing. We were working Butch's 12 pounder and every thing was going just fine. The weather was warm and the atmosphere heavy. About the third shot fifteen feet in front of the muzzle there was the Godawfullest roar and ball of fire in the middle of the smoke cloud you ever saw. Knocked #3 on his tail. Awfull concussion. Don't think a dust explosion can't happen in the open air. It sure did once. Impressive as the dickens.
<br>BCR


Quando Omni Moritati