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Newly Released 9/11 Documents Show Officials Knew Air Unsafe

9/9/2026

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Summary

Story summary

Mayor Zohran Mamdani announced the release of more than 170,000 previously undisclosed 9/11 air-quality documents.
The documents reveal officials knew the air was unsafe, found asbestos in nearly all Ground Zero samples.
The internal “Harding Memo” projects about 35,000 potential plaintiffs and roughly 10,000 expected claims.
Mayor Mamdani said officials’ assurances that air was safe contributed to later resident illnesses.

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Story summary

Mayor Zohran Mamdani announced the release of more than 170,000 previously undisclosed 9/11 air-quality documents.
The documents reveal officials knew the air was unsafe, found asbestos in nearly all Ground Zero samples.
The internal “Harding Memo” projects about 35,000 potential plaintiffs and roughly 10,000 expected claims.
Mayor Mamdani said officials’ assurances that air was safe contributed to later resident illnesses.