EE WAS IN THE NORTH LIME LOADOUT LOADING TRUCKS WHEN THE BEPEX STOPPED MAKING PELLETS. HE WAS ONT HE CONTROL ROOM LEVEL AND WENT DOWN THE STAIRS TO SEE WHAT TH EPROBLEM WAS. ON THE SECOND ST EP DOWN, HE TWISTED HIS LEFT KNEE. ON 5-23 HE SOUGHT MEDICAL ATTENTION AS THE PAIN RETURNED WHENEVER HE HAD TO DO A LOT OF CLIMBING. WHILE HE HAS CONTINUED TO PERFORM ALL OF HIS REGULAR DUTI