EMPLOYEE WAS INSIDE THE CEMENT KILN SHROUD CLEANING THE MID-KILN AREA DURING SHUTDOWN. HE WAS ATTACHED TO A ROPE AND HE LOST HIS FOOTING AS HE CLIMBED OUT OF THE SHROUD AT BREAK. AS HE FELL @ 4 FEET, HE TRIED TO CATCH HIMSELF AND STRUCK HIS LEFT WRIST ON THE METAL SHROUD AND BENT HIS WRIST BACKWARD. HE DID NOT SEE DR UNTIL 12/2/03 & WAS PUT ON RESTRICTED DUTY UNTIL HE SAW SPECIALIS