Dehradun, April 15 -- Prime Minister Narendra Modi said that large-scale infrastructural developments in India, such as the Rs.12,000-crore Delhi-Dehradun Economic Corridor that was inaugurated on Tuesday, are new gateways of economic growth that boost trade and industrial development. The 213 km-long six-lane access-controlled corridor has been built at a cost of over Rs 12,000 crore. It traverses through Delhi, Uttar Pradesh and Uttarakhand, and will reduce travel time between Delhi and Dehradun from over six hours at present to around two-and-a-half hours, according to an official statement.P 5 & 9...