EE SUFFERED A TUFT FRACTUR TO HIS RIGHT THUMB. HE WAS REMOVING A RUSTED BOLT OUT OF A FLANGE WITH AN IMPACT WRENCH. A COWORKER WAS BETING THE THREAD END OF A BOLT WITH A 2-LB. HAMMER TO GET TH E BOLT TO TURN. THE HAMMER DEFLECTED AND STRUCK HIS RIGHT THUMB CATCHING IT BETWEEN THE HAMMER AND IMPACT WRENCH TRIGGER.