EE WAS CUTTING OFF HUCK BOLT ON A MILL VIBRATING SCREEN AND POUNDING THEM OUT WITH A HAMMER. HE HAD DONE ABOUT 20 OF THEM AND LATER IN THE AFTERNOON HE FELT HIS ELBOW AND UPPER FOREARM GETTING SORE. HE WAS DIAGNOSED WITH EPICONDYLITIS AND IT WAS DETERMINED TO BE WORK RELATED ON 11-21-03.