EE WAS CUTTING 4 INCH ANGLE IRON WITH BAND SAW. SMALL PIECE OF METAL BECAME BOUND AT THE END OF THE CUT AND WAS THROWN TOWARD THE EE, STRIKING HIM IN THE RIGHT KNEE CAUSING A CONTUSION. BECAUS E OF PERSISTENT PAIN, EE WAS TAKEN FOR MEDICAL EVALUATION ON 10/1/02. THE EE WAS PROVIDED ANTI-INFLAMMATORY MEDICATION AND ALLOWED TO RETURN TO DUTIES.