EMPLOYEE WAS DRIVING A 100T HAUL TRUCK WHEN HE HIT A POTHOLE IN THE HAUL ROAD. HE BEGAN EXPERIENCING PAIN IN HIS BACK AS A RESULT. DUE TO AN EARLIER NONWORK RELATED INJURY HE EXPERIENCED, IT WAS QUESTIONABLE BY WORKER'S COMPENSATION AS TO WHETHER THE INJURY WAS WORK RELATED. DOCTOR'S VISITS AND CONSULTATION DETERMINED ON 5/29/03 THE INJURY TO BE WORK RELATED.