EE WAS WORKING IN THE REPLACEMENT OF DRAG CHAINS OF THE CLINKER ELEVATOR USING AN HYDRAULIC PRESS TO CLAMP CHAIN BUCKETS; WHILE USING THE PRESS ON ONE OF THE BUCKETS A METAL FRAGMENT SNATCHED FROM BUCKET PIN IMPACTING THE EE IN HIS LT. SIDERIB AREA, CAUSING A SUPERFICIAL PUNCTURE CUT. EEWAS STANDING AT A DISTANCE OF 5-6 FEET WEARING PERSONAL PROTECTIVE EQUIPMENT.