RE: FIRE or OH %@ !!!
I must admit, I have yet to se this happen, the pictoral warning on a hammer that shows a hammer chipping a chunk out and hitting someone in the eye because they hit a nail with it. Every hammer I have had will never chip chunks off and go flying, they just mushroom the heads till they're about 1/3 bigger, then I usually grind them back to the original diameter they once were.