China Completes Record-Breaking Underwater Shield Tunnel
Jinan, the capital of Shandong Province in East China and home to 9.4 million people, has made global headlines. Crews there have successfully completed the construction of the world’s largest-diameter underwater shield tunnel. The China Railway 14th Bureau Group is using the world’s largest tunnel boring machine to excavate a 3.6-mile (5,755 m) tunnel. While […]
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