WORKING AS A MINE REPAIRMAN, CREW WAS REPLACING THE SUPPORTING CABLES OF A CONVEYOR BELT WHICH IS ON A SLOPE. THE MAN STEPPED ON A ROCK, TURNED AND FELL. HE FELT A SHARP BACK PAIN. HE ASKED TO SEE DR AND DID SO ON 6-6-00. DR PRESCRIBED LGIHT DUTY AND MUSCLE RELAXERS.