About the most mysterious structure on the planet - gates Tonga
Hi all. Today I wanted to introduce you to one interesting structure. The gate of Tonga is one of the most mysterious and amazing structures on the planet. They are…

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Underground construction
One of the structural units of Construction Association interbudmontazh, the company “Interbudtunnel” performs works on construction and installation of various underground structures, tunnels, engineering and transportation networks, as well as…

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