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Release of documents opens door into city's early knowledge of WTC toxins

DOI digging in

BY HARPER FREEMAN
Posted 12/5/25

Documents generated in the aftermath of the 9/11 terrorist attacks by the city’s Department of Environmental Protection that were released earlier this month has offered World Trade Center responders and their advocates the first glimpse into revelations on what city officials knew about the toxins that lingered over ground zero in the aftermath of the twin towers’ collapse.  

The DEP earlier this month shared nearly 1,000 documents from the months after the attacks with leadership of 9/11 Health Watch, its executive director Ben Chevat told The Chief this week. In addition, Chevat and City Council Member Gale Brewer viewed the contents of 24 boxes of documents that DEP has maintained in a warehouse for the last two decades.  

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