. . "Why weren't 9/11 recovery workers protected at the World Trade Center? hearing before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Tenth Congress, first session, hearing held in Washington, DC, September 12, 2007"@en . . . "Why weren't nine eleven recovery workers protected at the World Trade Center"@en . . . . . . . . . . . . "Why weren't 9/11 recovery workers protected at the World Trade Center? : hearing before the Committee on Education and Labor, U.S. House of Representatives, One Hundred Tenth Congress, first session, hearing held in Washington, DC, September 12, 2007"@en . . . .