EMPLOYEE WAS WORKING NEAR ONE OF THE FINISH MILLS AND HAD JUST CHANGED A SCREEN FILTER; WHEN SHE STOOD UP, SHE HIT HER LOWER BACK ON SOME OVERHEAD CONDUIT. SHE REPORTED FEELING PAIN THAT EVEN ING (9/11/00) AND REQUESTED MEDICAL TREATMENT ON 9/14/00. ANTICIPATED TIME OFF IS TWO WORKING DAYS.