Pheew! thanks dr, I wondered if you had missed that part somehow.
Although I do little woodworking years ago I was getting ready to pour a floor for the new shop addition and found myself short on form stakes. Now, a lot of the wood cutting and been done in the old shop and little clean up had taken place. First cut with the torch caused flames to travel the saw dust on the floor at least 12-15' to the table saw and it was a damn precarious situation for about 10 minutes let me tell you! Saved the shop but only because there was nothing else flammable near the saw and I was dumb enough to fight it and not run outside.