Making of India's longest rail tunnel between Devprayag, Janasu in Uttarakhand face challenges; breakthrough achieved
"The tunnel boring machine was about 5 km inside the tunnel when it encountered a gush of water from all directions at the rate of around 1,500 litres per minute," an official said
"The tunnel boring machine was about 5 km inside the tunnel when it encountered a gush of water from all directions at the rate of around 1,500 litres per minute," an official said
