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The project, which is about 16.6 km long, connects Howrah to the west and Salt Lake to the east. Out of the entire length, 10.8 km runs under the ground. (Photo: Screengrab)India
India's first underwater metro to start in Kolkata soon, Piyush Goyal...

Along with the caption, Goyal also shared a video that talks about the engineering associated with construction of...

9 Aug 2019 8:59 AM IST

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