ONSET OF THIS OCCUPATIONAL ILLNESS OCCURED AFTER THE MINER WORKED IN AN AWKWARD POSITION OVER AN EXTENDED PERIOD OF TIME. THE FOLLOWING MORING HE EXPERIENCED MUSCLE TIGHTNESS IN HIS LOWER BACK. HE STATED THAT HE HAS EXPERIENCED SORENESS IN LOWER BACK ON NUMEROUS OCCASIONS SINCE 1992 AND IN 2000 HAD LOWER BACK SURGERY. PHYSICIANS REPORT ATTACHED TO COMPANY INCIDENT REPORT.