Various shots from positions on dam and on shore, of "Robert H Saunders" dam and American counterpart "Robert Moses" dam. Brief shot of Iroquois control dam from shore. CUs of names of "Robert H Saunders" dam, of "Robert Moses" dam. CUs of Long Sault Dam showing water coming through spillways. MSs part of dam, water spilling out. LAS of top of hydro tower. Various shots of base of tower, TILT UPs to top. Shots of groups of towers, of power lines. Interior shots of power house sub station, operator. CU of giant insulator.