EE STATED HE WAS BOLTING TOP & STEPPED ON ROCK & TWISTED RIGHT KNEE. MEDICAL RECEIVED 8/20/02 SHOWS NO EVIDENCE OF ACUTE TRAUMA (INJURY) FROM THE MINE ACCIDENT, BUT HAS NARROWING OF THE MEDIAL JOINT SPACE WITH DEGENERATIVE SPURRING. PAST MEDICAL HISTORY SHOWS HYPERTENSION, CYST REMOVAL FROM THE RIGHT KNEE.