EE BEGAN EXPEWRIENCING PAIN IN HIS LEFT KNEE WHE HE STEPPED INTO A CRACK IN THE MINE FLOOR ON 9-21-02 ON 1-10-03 EE BEGAN EXPERIENCING AN INCREASED LEVEL OF PAIN AND SWELLING WHILE PERFORMING NORMAL WORK ACTIVITES. SURGERY WAS PERFORMED TO REMOVE LOOSE BODIES. HE FEELS THAT HIS CONDITION RESULTED FROM WORK PLACE EXPOSURE OVER SEVERAL YEARS.