EE WHILE WORKING ON A 345 EXCAVATOR HAD TURNED THE IGNITION OFF AND WAS GETTING OFF THE MACHINE WHEN HE SLIPPED CAUSING HIM TO TWIST AND HIT HIS RIGHT KNEE ON THE EXCAVATOR TRACK. (EE FIRST GO T MEDICAL TREATMENT ON 6-9-03; DOCTOR RESTRICTED HIS WORK ACTIVITY OF NO CRAWLING ON 6-16-03.)