Nation 343 NYC firefighters died on 9/11. Since then, 200 have died from Ground Zero-related illnesses July 19, 2019Doug Stanglin, USA TODAYComments Off on 343 NYC firefighters died on 9/11. Since then, 200 have died from Ground Zero-related illnesses Richard Driscoll died a day after fellow firefighter Kevin Nolan. They rushed to the World Trade Center on 9/11 and since suffered related illnesses.