A Chinese air force plane takes off for a mission to bomb the floating ice that jams a section of the Yellow River, the second longest in China, in North China's Inner Mongolia autonomous region, March 9, 2010. Six air force planes dropped 48 bombs during a firing trial to blast apart ice flow, Xinhua reported. Photo: Xinhua

A Chinese air force plane takes off for a mission to bomb the floating ice that jams a section of the Yellow River, the second longest in China, in North China's Inner Mongolia autonomous region, March 9, 2010. Six air force planes dropped 48 bombs during a firing trial to blast apart ice flow, Xinhua reported. Photo: Xinhua

Chinese air force planes fly over the floating ice that jams a section of the Yellow River, the second longest in China, in North China's Inner Mongolia autonomous region, March 9, 2010. Six air force planes dropped 48 bombs during a firing trial to blast apart ice flow, Xinhua reported. Photo: Xinhua

Chinese air force planes fly over the floating ice that jams a section of the Yellow River, the second longest in China, in North China's Inner Mongolia autonomous region, March 9, 2010. Six air force planes dropped 48 bombs during a firing trial to blast apart ice flow, Xinhua reported. Photo: Xinhua

A view of the floating ice that jams a section of the Yellow River, the second longest in China, in North China's Inner Mongolia autonomous region, March 9, 2010. Six air force planes dropped 48 bombs during a firing trial to blast apart ice flow, Xinhua reported. Photo: Xinhua