Rescue workers and residents search for victims after a mud slide swept into the town of Zhouqu in Gannan prefecture of northwestern China's Gansu province, Tuesday, Aug. 10, 2010. (AP Photo/Ng Han Guan)

Photo by: Ng Han Guan

Rescue workers and residents search for victims after a mud slide swept into the town of Zhouqu in Gannan prefecture of northwestern China's Gansu province, Tuesday, Aug. 10, 2010. (AP Photo/Ng Han Guan)