EMPLOYEE WAS OPERATING A TRACK-MOUNTED RIDE WHILE CONDUCTING AN ON-SHIFT EXAMINATION OF CONVEYOR BELTS, STRUCK HEAD AGAINST A METAL I BEAM. (EMPLOYEE SOUGHT MEDICAL ATTENTION AND RETURNED TO W ORK. AN MRI WAS DONE ON DECEMBER 15, 2003 AND A DIAGNOSIS OF BULGING DISCS WAS MADE ON DECEMBER 17, 2003.)