Rescuers prepare for the ninth explosion to blast debris damming a river in order to safely release potential flood waters in the mudslides-hit Zhouqu County, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province, Aug.10, 2010. The drainage of the barrier lake was accelerated due to the explosion. [Xinhua]

Rescuers prepare for the ninth explosion to blast debris damming a river in order to safely release potential flood waters in the mudslides-hit Zhouqu County, Gannan Tibetan Autonomous Prefecture in northwest China's Gansu Province, Aug.10, 2010. The drainage of the barrier lake was accelerated due to the explosion. [Xinhua]