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Tuesday , 16 July 2024

Tag Archives: Longest Tunnel

World’s longest tunnel to open in 2017

World’s longest tunnel at Sedrun, Switzerland is now ready. Technically difficult to drill, the tunnel is very expensive. On October 15 this year, Swiss engineers cut the last part of the rock with a drilling machine named Sissi. The tunnel was conceived in 1947. The 57km (35.4 mile) long Gotthard Base rail tunnel has been hailed as an environmental triumph ...