INJURED WAS SHOVELING MATERIAL UNDER THE CLINKER RECLAIM HOPPER. AS HE EXTENDED HIS RIGHT ARM FULLY TO REACH THE MATERIAL IN THE BACK, HE FELT A PULLING SENSATION IN HIS ARM AND NUMBNESS IN HI S FINGERS. DID NOT BECOME REPORTABLE UNTIL HE STARTED TO MISS WORK DUE TO SURGERY ON 10-24-00.