EE WAS ATTEMPTING TO MOUNT DOZER TO ENTER THE EQUIPMENT CAB. HIS RIGHT FOOT WAS ON FIRST STEP ON SIDE OF CAT TRACK AND HIS HIS LEFT FOOT WAS ON TOP OF CRAWLER PAD. HIS RIGHT FOOT SLIPPED OFF S TEP AND ALL OF HIS WEIGHT TRANSFERRED TO HIS LEFT LEG. EE WAS DIAGNOSED WITH A PULLED LIGAMENT IN HIS LEFT UPPER LEG.