Mandi, June 15 (ANI): Engineers from southern India have devised two new technologies, SONAR and LIDAR, to carry out further search operations of the missing students who drowned in Beas River of Himachal Pradesh. 24 engineering students of a private engineering college of Hyderabad were swept away when the waters of river Beas suddenly spiked dangerously high following a release from the reservoir of 126 MW Larji hydropower project on June 08. Antony Leyon Felix, an engineer, said the two technologies are based on laser pulse-recognition.