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Search this archive of previously secret oil and chemical industry communications showing the extent of corporate knowledge about toxic substances that have killed or impaired millions.

In this February 2016 update, the Center for Public Integrity, Columbia University and City University of New York have added more than 7,000 once-confidential documents showing how Union Carbide dealt with reports of a brain-cancer cluster at its vinyl chloride plant in Texas.

These are among 200,000 documents obtained from William Baggett Jr., a lawyer who spent years suing chemical companies on behalf of a worker who died of brain cancer in Louisiana. The archive also contains some 20,000 documents on the carcinogen benzene.

Hundreds of thousands of additional documents on different chemicals will be added in the coming months and years.

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