About 100 tons of dangerous chemicals equivalent to 10 tanker-truck loads was spewed into the Songhua River, which supplies water to Harbin, the nation's environment watchdog disclosed yesterday. Zhang Lijun, vice-minister of the State Environmental Protection Administration (SEPA), told a press conference in Beijing that Jilin Petrochemical Corporation, a subsidiary of China National Petroleum Corporation (CNPC), "should be responsible" for the leak of benzene and its derivatives following an explosion at a chemical plant. The plant, on the upper reaches of the river in Jilin Province, earlier denied any connection between the contaminated water and the explosion on November 13,...