EMPLOYEE WAS WORKING WITH A BELT CREW INSTALLING BELT ON UNIT 4. WHILE HE WAS IN THE PROCESS OF INSTALLING BELT HARDWARE, HE STEPPED ON A PIECE OF LOOSE COAL CAUSING HIS RIGHT FOOT TO SLIP, TW ISTING HIS RIGHT KNEE. HE DID NOT START MISSING TIME UNTIL AUGUST 1, 2003 AND HE IS STILL UNDER THE DOCTOR'S CARE AT THIS TIME.