Kolkata Metro Railway Corporation Ltd on Wednesday reportedly completed the construction of India’s first underwater tunnel. The tunnel was reportedly built under the Hooghly river for establishing a metro link in Kolkata. According to reports, the project was completed within the projected time using a giant tunnel-boring machine. Notably, the underwater tunnel runs 502 metres under the river.
By Sri Ram | May 24, 2017 1:40 PM #Under water #tunnel
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