EE REPORTED WHEN UNLOADING TIMBERS FROM A RAM CAT TRAILER ALONG THE 17 LEFT BELT ENTR, STURKC HIS HEAD AGAINST A BELT HANGER. EE REPORTED THE INJURY TO HIS SUPERVISOR ON THIS DAT. CONTINUED TO WORK ALL SCHEDULED SHIFTS. ON 10-1-02 WAS INITIALLY TREATED BY A PHYSICIAN FOR THE INJURY. STARTED LOSING REGULAR SCHEDULED WORK DAYS ON 11-25-02, BECAME A REPORTABLE INJURY ON THIS DATE.