Srinagar, June 8, June 9 -- India's longest tunnel project at Zojila, a Rs 6,500-crore strategic infrastructure initiative, is set to achieve a major breakthrough on Tuesday, with Union Minister for Road Transport and Highways Nitin Gadkari scheduled to attend the ceremony. An official said Gadkari will visit Sonamarg on Tuesday to trigger the breakthrough blast of the main tunnel, marking a key milestone in the prestigious project.The 13.15-km-long tunnel, being constructed at an altitude of 11,578 feet by Hyderabad-based Megha Engineering and Infrastructure Ltd (MEIL), has witnessed excavation of over 13 kilometres, bringing it close to the key tunnelling milestone where excavation faces from both ends meet.Located around 24 km from Son...