EE STATES THAT THE MOBILE BRIDGES & CONT MINER WERE BACKING UP TO REPOSITION FOR THE NEXT LIFT ON PILLAR SPLIT. THE HOPPER OF THE BRIDGE WAS UNDER THE BOOM OF THE MINER & WHEN IT CLEARED THE END OF THE BOOM, WHILE BOTH WERE TRAMMING BACKW ARD IT CAUSED THE FRONT OF THE BRIDGE TO RISE QUICKLY MOVING EE AROUND IN THE CAB. EE STATES HESTRUCK HIS HEAD AGAINST THE CANOPY OF THE MBC