DURING NORMAL WORK ACTIVITIES AS A TIMBERMAN UNDERGROUND, EE IS ON HIS KNEES ALL THE TIME AND DOES A LOT OF TWISTING WHILE ON HIS KNEES. WHILE TIMBERING, EE NOTICED HIS LEFT KNEE SWELLING. HE WENT TO THE DOCTOR ON 7/23/04 AND WAS DIAGNOSED WITH PREPATELLAR BURSITIS WITH KNEE EFFUSION. HE STARTED MISSING WORK ON 7/26/04. THE DOCTOR'S NOTES WERE RECEIVED ON 8/2/04 (ATTACHED).