EE USING HAND DRILL TO DRILL HOLE IN STEEL. DRILL BIT CAUGHT ON WELD AFTER MAKING HOLE. DRILL TWISTED OUT OF EE'S HAND AND STRAINED MIDDLE FINGER OF RIGHT HAND MIDDLE FINGER BECAME SLIGHTLY SW OLLEN BY NEXT DAY. SENT EE TO MD WHERE HAND WAS WAS EXAMINED. EE RELEASED TO MODIFIED DUTY LIMITED USE OF RIGHT HAND FOR ONE WEEK.