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China's securities regulator is investigating Zijin Mining's disclosure, about a dangerous leak at one of its copper plants in eastern China.
Zijin initially blamed rain for the July 3rd leak of acidic waste water. But it delayed reporting the incident for nine days. Zijin Mining, China's largest gold producer, says it will cooperate with the China Securities Regulatory Commission.
Listed companies are expected to disclose complete, accurate information on a timely basis. Zijin could be fined between 400 and 500 million yuan for the pollution.