WHILE RIDING A MANTRIP ACROSS SECTION AT END OF SHIFT THE INJURED PERSON HIT HIS HEAD ON THE TOP. REPORTED ACCIDENT TO SUPERINTENDENT BUT REFUSED ANY MEDICAL ASSISTANCE. HE WORKED ALL SCHEDULE D SHIFTS THRU 1/28/02 W/O COMPLAINT. HE HAS BEENABSENT FROM WORK SINCE 1/29/02 BUT HAD NOT NOTIFIED SUPERVISOR THIS WAS DUE TO ACCIDENT UNTIL 2/6/02 (YESTERDAY).