ON 3-10-00 EE WAS OPERATING THE DOZER. AS HE TRIED TO GET OFF HIS PIECE OF EQUIPMENT, HE FELL ONTO HIS KNEE ON THE BLADE ARM. ON 4-11-00, THE EE WAS OPERATING THE LOADER AND AGAIN EXPERIENCED PAIN IN HIS KNEE. HE SOUGHT TREATMENT, BUT WAS RELEASED TO WORK WITH NO RESTRICTIONS. 7-12-00 THE EE AGAIN SOUGHT TREATMENT BECAUSE OF THIS SAME PROBLEM. HE IS NOT PERFORMING HIS JOB BUT WITH