A soldier wears his mask before working to dissolve the contamination in Longjiang River at a hydropower station in Liucheng County of Liuzhou City, south China's Guangxi Zhuang Autonomous Region, Jan. 29, 2012. Neutralizers were poured by armed police into a water tank and then flew into the Longjiang River, a tributary upstream of the Liujiang River at the region, as an effort to dissolve the contamination in the river. The cadmium pollution in the river following a spill from an industrial plant has been controlled and no new leakage has been found, local environmental authorities said Sunday. The cadmium pollutants, have now reached the Luodong hydropower station on the Longjiang River, and still pose a threat to water safety in Liujiang, according to experts. (Xinhua)