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People who like reply on Türkiye: Metro tunnel segments crack - "Segments use Fiber Reinforced Polymer and Macro Synthetic Fiber"
Ray M. Morgan on Türkiye: Metro tunnel segments crack - "Segments use Fiber Reinforced Polymer and Macro Synthetic Fiber" (): Anybody know why they tried using Fiber Reinforced Polymer and Macro Synthetic...
cover tunnel photo by: Matt Brown from London, England / CC BY
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