DALIAN, June 30 (Xinhua) -- Two workers were killed and six more were injured Tuesday in a chemical plant explosion in northeast China's Liaoning Province, local work safety sources said.

    The explosion occurred at 3 p.m. at a waste water treatment tank in Evonik Lynchem Co., Ltd. in Dalian City. It killed two workers standing near the sealed tank and injured six others.

    The explosion at the wholly-owned subsidiary of German chemical giant Evonik Degussa is under investigation.

    The blast did not cause big impacts to the environment, the Dalian work safety bureau said.