INJURED WAS RIDING MANTRIP OUTSIDE AT END OF SHIFT. HE WAS RIDING ON THE OUTBY END OF THE SHIFT. THE MANTRIP HIT A PARKED MOTOR. THE IMPACT CAUSED HIM TO HIT HIS HEAD ON THE MANTRIP.HE WAS NOT WEARING A HARD HAT AT THETIME OF INCIDENT. HE WAS TRANSPORTED TO HOSPITAL WHERE HE RECEIVED 3 STITCHES AND 8 STAPLES.