EE HAD BEEN WELDING ON A HOSE BRACKET ON D-10N DOZER & WAS USING A GRINDER TO SMOOTH IT DOWN WHEN A PIECE OF THE GRINDING WHEEL CAME OFF & STRICK THE CLEAR SAFETY LENS ON WELDING HOOD SHATTER ING THE LENS & PIECES OF SAFETY GLASS & DISC ENTERED THE EYE. OBJECTS WERE REMOVED BY A OPTHAMOLOGISTY