EE WAS HANDLING ROCK DUST HOSE ALONG THE BELT STRUCTURE ON N MAINS WHEN HE STEPPED IN A HOLE AND TWISTED HIS KNEE. HE WAS NOT SCHEDULED TO WORK, AND BELIEVED IT WOULD BE ALL RIGHT. HE CALLED H IS SUPERVISOR 6-10 AND STATED HE WAS GOING TO THE DOCTOR. HE WAS DIAGNOSED AS HOAVE A DISLOCATED PATELLA.