New York hid warnings on ‘toxic air’ after 9/11, Mamdani says as thousands of documents surface

Mayor Zohran Mamdani of New York City announced the release of tens of thousands of documents on September 9, revealing that the city had concealed crucial information about air toxicity following the September 11, 2001 attacks. These documents, totaling 170,000 pages, shed light on the city's knowledge of the toxic air surrounding Ground Zero, the period when this information was known, and the measures taken to minimize liability.

The release comes ahead of the 25th anniversary of the attacks that claimed the lives of 2,977 people, primarily due to the collapse of the Twin Towers in Lower Manhattan and Western Brooklyn.

According to a federal medical monitoring program, over 9,400 individuals have died from illnesses linked to their exposure to the toxic air in the area since the 9/11 attacks. Mayor Mamdani revealed that multiple Mayoral administrations, spanning four different administrations, had withheld this information from the public, the US Congress, and the City Council despite continuing to reassure the public that the air was "safe and acceptable."

Benjamin Chevat, the director of 9/11 Health Watch, a victims' advocacy group that played a significant role in compelling the city to make the documents public, stated that for 25 years, these administrations kept from the public and other key stakeholders documents outlining the dangers of toxic chemicals in the affected areas. The documents will be made available online in waves over the next 12 months.

When asked about the officials responsible for withholding information, Mamdani responded, "this goes across a multitude of those that New Yorkers have trusted." He emphasized that people contracted illnesses because the leaders they trusted misled them by claiming the air was safe to breathe. The release of these documents could implicate former New York mayors Rudy Giuliani, who was in office at the time of the attacks, and Michael Bloomberg, who served from January 2002 to December 2013.