New York City Mayor Zohran Mamdani has unveiled an initiative worth more than $34 million to create a public portal holding hundreds of thousands of pages on the city's response to the September 11 attacks. The records include material detailing concerns about the toxic air that hung over Lower Manhattan after the towers collapsed. Survivors and researchers have spent years pressing for wider access to the city's 9/11 files, and the plan would move the documents from storage into an open online archive.