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  1. DNA — 2019-06-01 23:11:41
    …A molecule takes the shape of a double helix, an elegantly simple structure that resembles a gently twisted ladder. The rails of the ladder are made of alternating units of phosphate and the sugar deoxyribose; the rungs are each composed of a pa…
  2. Railway — 2019-02-19 15:36:10
    …build the Stockton and Darlington Railway (S&DR) began. The original plan was to use horses to draw coal carts on metal rails, but after company director Edward Pease met Stephenson he agreed to change the plans. Work began in 1822, and in Septe…
  3. Steel — 2017-06-28 14:56:51
    …Tower possible" width="300" }} It was then worked with a forge hammer by the puddler before being rolled into sheets or rails. By 1860, there were over 3000 puddling furnaces in Britain, but the process was slow. == The Process == The Bessemer …
    …erter had an enormous impact on an expanding society and shrinking the nation. The availability of cheap, durable steel rails allowed pioneers to build over 30,000 miles of railroad and colonise the western part of the country. Sheet steel coul…
  4. Industrial Revolution — 2016-06-23 12:25:37
    …56''' Mushet found an inexpensive way to make high quality steel by adding '''ferromanganese'''. == Better Steel Train Rails == '''Mushet''' was the first to make durable rails of steel rather than cast iron, providing the basis for the develo…
    …pment of rail transportation throughout the world in the late Nineteenth century. The first of Mushet's steel rails was delivered to Derby Midland Station, where it was laid down early in 1857 at a heavily trafficked part of the line w…
    …here the iron rails had to be renewed every six months, and occasionally every three." Six years later, in 1863, the rail seemed as perfect…

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