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  The Silence of the Trams - YouTube

  https://www.youtube.com/watch?v=ebaDe3eiQIA

  The (almost) official promotional video for the Edinburgh Trams Project

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  MUST SEE! Three rail switch moving at Corcovado siding - YouTube

  https://www.youtube.com/watch?v=Sld9r37ztV4

  Thursday, May 17, 2012, 1:06 PM. Here, because I'm a train freak, is the one shot I looked forward to most to capturing on this trip. Our trolley car is pull...

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  High Performance Weld (HPW) by Thermit Australia - YouTube

  https://www.youtube.com/watch?v=TstoubOQImQ

  The High Performance Weld (HPW) is Thermit's innovative solution to aluminothermic welding process for heavy haul and head hardened rail. Through using an al...

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  The world's oldest windmills in Iran; still working! part 1 - YouTube

  https://www.youtube.com/watch?v=vNp2C8IWOKY

  Windmills have been used in Iran as early as the 7th century AD. Some of these are still operational in Nashtifan, near Khaf, northern east of Iran. آسیابهای...

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