EE WAS OPERATING THE #4 SHUTTLE CAR. HE WAS PULLING OFF THE FEEDER, ONE BREAK INBY THE POWER CENTER AT SPAD #8316. EE HIT A POTHOLE CAUSING HIM TO BOUNCE UP OFF HIS SEAT. WHEN HE CAME BACK DOW N HIS TAILBONE STRUCK THE FRAME OF THE SEAT. EE WAS DIAGNOSED WITH A CONTUSION TO THE TAILBONE.