THE EE WAS OPERATING A SHUTTLE CAR AND HIT A ROLL IN THE ROADWAY(SANDSTONE ROLL), CAUSING THE EE TO BOUNCE FROM HIS SEAT AND STRIKE HIS HEAD ON THE CANOPY. THE X-RAY AND CAT SCAN WERE NEGATIVE , CONTUSION/BRUISE TO NECK AREA. THE EE RETURNED TO WORK HIS NEXT SCHEDULED SHIFT.