WHILE CHANGING A TOOTH ON THE BUCKET OF A FRONT-END LOADER, EE WAS USING A HAMMER TO REMOVE THE RETAINER PIN. A PIECE OF ROCK FLEW UNDERNEATH HIS SAFETY GLASSES AND LODGED BELOW HIS LEFT EYELI D. THE ATTENDING PHYSICIAN REMOVED THE FOREIGN BODY AND STITCHES THE OPENING. EE RETURNED TO WORK THE FOLLOWING DAY, 3/10/04 WITH NO WORK RESTRICTIONS.