Whether it was a large firework (very likely) or dynamite (almost zero possibility) doesn't really matter much. What matters is that Darwin is still at work here. Even my dog would have recognized that thing was not a candle based on pictures I've seen of it - allegedly - on other websites. It makes me sad that someone could have obtained the age of 30 and still be so ignorant. She didn't deserve to be injured so, but man, was she dumb. She finds something like this in her basement, unknown, and from the previous tenant, ... and decides to light it off in the house???!!!