India's first underwater tunnel for Howrah-Kolkata Metro to be completed next week - Livemint

Livemint
India's first underwater tunnel for Howrah-Kolkata Metro to be completed next week
Livemint
The 520-metre underwater tunnel will connect the twin cities of Howrah and Kolkata located on either side of the Hooghly. Photo: HT. New Delhi: The tunnelling work under the Hooghly river, the first such underwater project in the country, to provide ...and more »