Reports stated that Sam was cleaning a ball that had been a water recovery with a wire brush attachment in an electric drill when he hit a watercap fuse that was not obvious because of the rust and sediment. Because of their design, these fuses are perhaps the most dangerous fuse to deal with in Civil War ordinance, also it has always been debated as to whether or not the ball had already been drilled and the powder removed. Pieces of the cannonball hit residences several hundred yards away. Several years after this incident, another collector-Lawrence Christopher of Dalton Georgia was seriously injured when a 30# Parrot Shell that he was cleaning exploded. This hit particularly close to home as I had been at Lawrence's home the day before picking up a shell and he showed me the Parrot shell that later exploded. Cleaning and defusing these balls/shells are best left to the experts who defuse them remotely. If you wish to see how this is one, go to youtube, put Steve Phillips in the search box and view the video titled: Unloading a James Shell.