EE WAS FABRICATING A STRUCTURE WITH DESCENDING CATWALK. WHILE STEPPING OFF CATWALK TO CONCRETE FLOOR, HE STEPPED ON A PIECE OF ANGLE IRON ON FLOOR, TURNING LEFT ANKLE. MEDICAL CARE DIAGNOSIS W AS STRAINED LIGAMENTS SURROUNDING ANKLE AREA. PRESCRIBED ORAL MEDICATION FOR PAIN AND INSTALLED SPLINT FOR 2 WEEKS.