C-CLAMP WAS PUT ON PIECE OF METAL ON WASHING SCREEN TOWER, WHEN PIECE OF METAL WAS HIT WITH A HAMMER THE C-CLAMP BROKE HITTING EE IN THE LEFT KNEE CAP. EE SOUGHT MEDICAL ATTENTION DATE OF INJURY, RETURNED TO WORK, NO RESTRICTIONS. EE RETURNED TO PHYSICIAN ON 01/20/05. EE TO REMAIN OFF WORK UNTIL MRI RESULTS RECIEVED.