He also used the black powder in his civl war cannon. My dad, one to never let an opportunity to suggest someone else do something incredibly stupid suggested to this gentleman that if beer cans shredded from the ignition, to fill them with concrete Yes, beer WAS involved in this discussion. The next thing I know, I'm reading in the paper about a woman's house getting hit by a concrete filled beer can that came careening through her house and landed in front of her TV... Of course, there was a HUGE cloud of black smoke that was kind hard to hide from!