Kathmandu, September 3 Shishir Giri, a civil engineering student at Kathmandu University, went to Rasuwa on August 13 for an internship at the Upper Trishuli 3B project. He was accompanied by fellow civil engineering students Sameer Poudel and Srishti Bastola. On August 26, when a sudden and devastating flood struck the Bhotekoshi-Trishuli area, Giri was…