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CR14G employees supervise tunneling work of the Jin-Gu Haihe Tunnel along Tianjin-Weifang High-Speed Railway in Tianjin, May ...
Found And Explained on MSN42m
Underground Invasion: How the Soviets Planned to Tunnel Beneath AmericaIn one of the Cold War’s most bizarre chapters, Soviet engineers pursued the concept of a nuclear-powered tunneling ...
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