9/11/01 EE WAS CHANGING A SPEED REDUCER ON THE #4 CONVEYOR. AS EE LIFTED THE SPEED REDUCER HE FELT A PAIN IN BACK WAS REPORTED AS 1ST AID CASE. NO MED TREATMENT WAS REQUIRED. 3/4/02 SAW DR FOR FIRST TIME FOR BACK PAIN RESULT OF 11/09/01 IN CIDENT. RET'D TO DR ON 4/26/02 & WAS UT OFF WORKTHRU 5/24/02