DURING KILN SHUTDOWN, EMPLOYEE WAS INSIDE ROTARY CEMENT KILN USING A CUTTING TORCH TO CUT APPROX3'-6' ENDS OFF OF CHAIN HANGING INSIDE OF KILN. HE WAS CUTTING THE CHAIN WHEN ANOTHER PIECE OF C HAIN FELL, STRIKING HIM ON HIS HEAD (WEARING HARD HAT) AND KNOCKING HIM DOWN. HIS RIGHT HIP STRUCK A PEDESTAL INSIDE THE KILN. HE WAS DIAGNOSED WITH CONCUSSION AND POSSIBLE NECK INJURY.