Delhi Metro Rail Corporation (DMRC) workers work at a underground construction site in New Delhi, India, April 03, 2013. A new interchange station will be the Mandi House station. The three-kilometre new corridor under Phase III will have Janpath as its core station, connecting Central Secretariat to Mandi House. This will also directly connect Badarpur line to Mandi House with the latter as the interchanging station. Photo Credit: Indian Photo Agency (InPA)