Space on MSN1d
'We didn't know what it was at first.' NASA aircraft uncovers site of secret Cold War nuclear missile tunnels under Greenland ice sheet
As it turns out, this abandoned "secret city" was the site of a secret Cold War project known as Project Iceworm which called ...
Yahoo Finance5d
Shield tunnelling tech success at Chongtai Yangtze River Tunnel
China's intelligent shield tunnelling technology has been successfully implemented in the Chongtai Yangtze River Tunnel, marking an advancement on the Shanghai-Chongqing-Chengdu High-Speed Railway ...
Business Wire6d
Chongtai Yangtze River Tunnel: A Successful Trial of China's Intelligent Shield Tunneling Technology
SHANGHAI--(BUSINESS WIRE)--China's latest intelligent shield tunneling technology has been successfully applied in the Chongtai Yangtze River Tunnel, a key project for the Shanghai-Chongqing ...
Asia One5d
Chongtai Yangtze River Tunnel: A Successful Trial of China's Intelligent Shield Tunneling Technology
Designed for speeds of 350 km/h, the Chongtai Yangtze River Tunnel is the world's fastest underwater tunnel. It covers 14.25 km in total, including a 13.20-km-long shield section. Managed by ...
Yahoo Finance5d
Chongtai Yangtze River Tunnel: A Successful Trial of China's Intelligent Shield Tunneling Technology
SHANGHAI, Nov. 22, 2024 /PRNewswire/ -- China's latest intelligent shield tunneling technology has been successfully applied in the Chongtai Yangtze River Tunnel, a key project for the ...