Back in the 1960s my FIL and his brother were cleaning out an old tool box they had just picked from the farm of a friend. Inside was a 1/4 stick of dynamite. Two guys in their 30s and brothers to boot. They figured if they set it off in the dirt street it would just make noise and not do much. They were wrong. It left a large crater that they had to drive around for months before the city got around to fixing it.