Canadian power plant & aluminium being produced, presumably in America.
United States of America (USA)? / Canada.
Various shots of a landscape - flat land, wooded area, river runs through it, dam seen, artificial lake, bridge. Sign on dam reading 'Shipshaw'.
Various shots of water surging into lake through dam. A man looking at it from rock on the side, dam is huge. Various shots of the interior of the power plant - machinery, switchboards, people working, etc.
Long shot of large piles of aluminium bars on outdoor storage, metalwork with chimneys smoking in background. Close up shot of water surging through large tap. Man working on a large turbine inside power plant.
Cut to various shots of the aluminium bars being made. Metal being melted, poured into moulds, moulds broken etc.
Note: This seems to be unfortunate mix of Canadian power station and American aluminium factory - quite unclear.