THE EE JOB TASK WAS TO REMOVE A TIRE FROM A ROOF BOLT MACHINE. THE LUG NUTS WERE TIGHT AND THE EE DECIDED TO USE A BREAKER BAR ALONG WITH THE RATCHET. WHILE STANDING ON THE BREAKER BAR, THE BA R SLIPPED FROM THE RATCHET. THE EE SLIPPED AND THE BREAKER BAR FLEW OFF THE RATCHET, STRIKING EE IN CHIN AND MOUTH LOST TOOTH AND STITCHES IN LIP.