INJURED CLAIMS THAT WHILE TRAMMING 21S/C, SHUTTLE CAR IN ROADWAY 1BRK INBY BELT FEEDER, THE SHUTTLE CAR TRAVELED OVER HUMP IN ROADWAY, CAUSING HIS HEAD TO CONTACT MINE ROOF RESULTIN GIN ALLEDG E INJURY. IT SHOULD BE NOTED THAT INJURED IS ABOVE AVERAGE IN SIZE AND MAY HAVE HAD TROUBLE IN SMALL OPERATOR COMPARTMENT.