EE WAS SITTING IN THE INTERSECTION OF 45P & 44E ON THE GROUND FACINT SOUTH. EE WAS INSTALLING SURVEYING CENTER PINS. THE SCALER WAS TRAVELING SOUTH DOWN 45P WITH ALL EIGHT LIGHTS ON. SCALER OP ERATOR FAILED TO SEE SURVEYOR AND STRUCK HIM IN THE BACK, FOLDING HIM OVER AND UNDER THE SCALER. EE SUFFERED FRACTURE LEFT & RIGHT FEMUR, LEFT TIBIA & FIBULA, LEFT ANKLE.