Many missing after Laos dam collapse Hundreds of people are missing and some are feared dead after a hydropower dam under construction collapsed in southern Laos, causing flash flooding which swept away homes Jul 23: Dam collapse releases five billion cubic metres of water downstream – equivalent to more than two million Olympic swimming pools Huge area along river south of dam flooded. Six villages engulfed, more than 6,600 people left homeless $1.2 billion Xe-Pian Xe Namnoy dam – joint venture by South Korean, Thai and Lao companies – was meant to start commercial operations by 2019 Mekong CHINA VIETNAM LAOS Vientiane THAILAND Dam CAMBODIA 200km 125 miles Xe Pian River ATTAPEU PROVINCE Xe Kong River Attapeu 10km 6 miles Sources: Hydroworld.com, www.power-technology.com, BBC, Reuters © GRAPHIC NEWS