MAINT FOREMAN WAS HELPING HIS THIRD SHIFT CREW DURING A #5 KILN SHUTDOWN BY HELPING REMOVE A BEAM OUT OF #5 COOLER. WHILE STANDING ON THE BURNING FLOOR AT APPROX 5:30 AM THE BEAM HIT THE SIDE OF THE COOLER AND DUST FROM ABOVE FELL BEHIND HIS SAFETY GLASSES INTO HIS RIGHT EYE CAUSING AN IRRITATION AND CORNEAL ABRASION. HE SOUGHT MEDICAL CARE LATER THAT DAY TO RECOVER.