Workers at a construction site look across toward rescue workers searching among the debris after a mudslide swept away a large part of the town of Zhouqu, Gannan prefecture, in northwestern China's Gansu province, on Monday, Aug. 9, 2010. Rescuers dug through mud and wreckage Monday searching for hundreds of people missing after flash floods and landslides struck northwestern China. (AP Photo)

Workers at a construction site look across toward rescue workers searching among the debris after a mudslide swept away a large part of the town of Zhouqu, Gannan prefecture, in northwestern China's Gansu province, on Monday, Aug. 9, 2010. Rescuers dug through mud and wreckage Monday searching for hundreds of people missing after flash floods and landslides struck northwestern China. (AP Photo)