EE WAS WORKING ON EXCAVATOR BUCKET REMOVING ROCK TEETH WHEN A SMALL PIECE OF METAL CAME OFF THE TOOTH FROM THE HAMMER BLOW AND LODGED IN EE'S RIGHT THIGH. THE ACCIDENT INVOLVED MINE EQUIPMENT PARKED AT THE MINE SHOP FOR REPAIR. THE MINER HAS LOTS OF EXPERIENCE, TRAINING & APTITUDE. NO RULES WERE BROKEN.