46""X 14""X 3/4"" PIECE OF METAL WAS WEDGED AGAINST RESTRICTOR PLATE ON THE REVERSING FEEDER BELT. AFTER LOCKING OUT, EE HIT THE PLATE TWICE WITH HIS HAND. THE PLATE THEN FELL DOWN ON HIS HAND ON THE SECOND BLOW, PINCHING HIS HAND BETWEEN THE PLATE AND THE CONVEYOR BELT.