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  1. Iron Making and Bridge Building (1984 Video)

    Producer
    Neil Cameron
    Subject
    Technology
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    Strong materials are required to make bridges, and wood or stone were replaced by iron as large blast furnaces came along. The superior tensile properties of iron allowed bridge builders to use new designs,...

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  2. March of Aluminium, The (1987 Video)

    Producer
    Neil Cameron
    Subject
    Technology
    Distribution
    OUT OF DISTRIBUTION, Videocassette. Standard formats. col. 25 min.

    In the mid-19th century aluminium was a precious metal. By the 1930s it was a bulk material, used in aircraft manufacture, electrical cables, kitchenware and motor cars. By 1950 its applications were...

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