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How It's Made: Season 23

23x04 Railway Bridge Ties; Membrane Filters; Hydraulic Post Drivers; Bi-planes
TV-G

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  • 2014-04-25T01:00:00Z on Science
  • 30m
  • United States
  • English
  • Documentary
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This episode demonstrates the production processes for Railway Bridge Ties, Membrane Filters, Hydraulic Post Drivers, and Bi-planes and shows how each is made.
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