EMPLOYEE WAS WORKING PUTTING A SHIELD ON THE DRIVELINE OF A TRACK DOZER. ANOTHER MECHANIC WAS NEARBY GRINDING ON METAL TO MAKE A BRACKET FOR A GREASE LINE. APPARENTLY A PARTICLE FROM THE GRI NDING ACTIVITY STRUCK THE INUURED EMPLOYEE IN THE EYE. HE WAS WEARING SAFETY GLASSES WITH SIDE SHIELDS AT THE TIME OF THE EVENT.