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People who like reply on Türkiye: Metro tunnel segments crack - "Segments use Fiber Reinforced Polymer and Macro Synthetic Fiber"
Tim Altman on Türkiye: Metro tunnel segments crack - "Segments use Fiber Reinforced Polymer and Macro Synthetic Fiber" (): Obviously whoever designed and produced these tunnel segments have not read the...
cover tunnel photo by: Matt Brown from London, England / CC BY
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