A large collection of documents has been made public, shedding light on the health risks associated with air quality after a major terrorist attack. These documents total around 170,000 pages and pertain to the period following the attack. Some internal notes indicate that officials may have been aware of potential environmental hazards and the possibility of legal action.

Further details are available regarding the content of these documents, including potential grounds for lawsuits. Certain memos outline various concerns, such as the provision of faulty equipment to rescue workers and the failure to secure businesses.

The release of these documents provides insight into the city's response to the attack and its potential knowledge of associated health risks.