A model dam built on a river is the prototype for a huge new dam in Washington, USA.
Full titles read: "The Super Dam - A Story in Miniature." (new title) Before spending Ã¯Â¿Â½7,000,000 on a giant dam, the American engineers of this big proposition built this scale model, complete with river -".
United States of America.
Various shots of a model dam built over a river as the prototype for a dam to be built over the Columbia River in Washington (state). Voiceover tells us the real dam is called The Rock Island Plant and gives us more technical details.