EE WAS OPERATING A BULL DOZER. HE WAS PUSHING DIRT FORWARD WHEN THE BLADE HIT A ROCK & CAME TO A COMPLETE STOP, BUT THE SEAT BELT HAD PLAY IN IT. THE SEAT BELT DID NOT STOP HIM & HE FLEW FORWA RD & UP & HIT HIS HEAD (LACERATIONS) ON THE ROOF OF THE CAB.