EMPLOYEE WAS HOLDING WRENCH THAT WAS HOLDING THE BOLT USED TO ATTACH TRACKS TOGETHER ON DOZER, THE WRENCH WAS TO BE EASED AGAINST SIDE OF THE TRACK TO PREVENT THE WRENCH FROM SLIPPING AND AFTE R THE WRENCH WAS AGAINST THE TRACK THE EMPLOYEE WAS SUPPOSED TO REMOVE HIS ENTIRE HAND FROM THE AREA BEFORE THE AIR WRENCH WAS ACTIVATED, HIS RIGHT FINGER WAS IN THE WAY, FRACTURE RIGHT PINKY