Environmental Concerns At World Trade Center Site

Four weeks after the collapse of the World Trade Center, New Yorkers are wearing dust masks on the streets downtown and hiring industrial cleanup crews to remove asbestos from their offices and apartments. The twin towers spouted immense plumes of smoke when they were attacked and scattered debris for miles when they fell... Government officials have said from the beginning that the air is safe for everyone except rescue workers at the Trade Center site, who should wear respirators.