THE EMPLOYEE WAS TEMPORARILY ASSIGNED DUTIES DRIVING A 160 TON DART COAL HAULER. HE NOTICED PAIN IN LOWER BACK AND LEFT HIP WHICH GRADUALLY INCREASED AS HE CONTINUED DRIVING THE HAUL TRUCK. HE SOUGHT CHIROPRACTIC TREATMENT AND WAS DIAGNOSED WITH LUMBAR AND PELVIC SEGMENTAL DYSFUNCTIONS, WHICH HE ATTRIBUTES TO REPETITIVE TRAUMA FROM OPERATING HEAVY EQUIPMENT.