Dehradun, Aug. 21 -- Relief operations for the cloudburst calamity in some villages of Mori block in Uttarkashi district suffered a major jolt when a helicopter, while returning after dropping relief material in the disaster-hit area, crashed in village Moldi of the same block this afternoon. All the three persons aboard the helicopter died on the spot. The accident occurred when the helicopter collided with electric wires in Moldi village. Pilot Captain Ranjiv Lal, co-pilot Shailesh and a local villager, Rajpal, were aboard. After receiving information about the incident, Chief Minister Trivendra Singh Rawat expressed grief over the incident in a tweet. At the same time, he also prayed for peace to the departed souls and for the bereaved f...