DURING KILN SHUTDOWN, EE WAS USING PRY BAR TO PRY UP ON KILN PROBES AT THE MID-KILN AREA IN ORDER TO ALIGN BOLTS WHEN HE STRAINED HIS LOWER BACK. DID NOT SEE DR. UNTIL 11-25-02, AT WHICH TIME HE WAS TAKEN OFF WORK. RETURNED TO WORK WITH NO RESTRICTIONS ON 12-02-02.