I met Troy at the Williamsburg show. My home is not far from his place and I had intended to go see him, but have been stuck in Arlington with work pretty much ever since the show. I am so sorry this happened. When I was in the Navy, black powder was considered to be the most dangerous thing they had on board the ship.
Jim, do you know any details about what could have caused the accident? What kind of flask was it? Could it have been static electricity?