Dehradun/New Delhi, Aug. 15 -- Specialist rescue teams on Friday raced against time to reach the three people who went missing after debris and water entered a tunnel under construction at a hydroelectric project site in Uttarakhand's Chamoli district, killing seven people. Twenty-two people were trapped inside the three-kilometre tunnel when the water rushed in around 7 pm on Thursday, according to District Disaster Management Officer N K Joshi. The incident occurred at the Tehri Hydro Development Corporation's (THDC) Vishnugad-Pipalkoti hydroelectric project in Mayapur (Pipalkoti), when landslides and subsidence caused debris and water to fill half of the tunnel, trapping the workers inside. P8...