Paul Lioy and Environmental Health Perspectives
  • What was in the 9/11 dust?

    In this Nov. 19, 2001 photo, a teddy bear sits in a high chair, both covered in dust. (Paul Lioy and Environmental Health Perspectives)
    Paul Lioy and Environmental Health Perspectives
  • What was in the 9/11 dust?

    Cement made up much of the World Trade Center dust. There were also particles of gypsum, a mineral used in drywall.
    U.S. Environmental Protection Agency
  • What was in the 9/11 dust?

    The dust contained a number of synthetic fibers from rugs, carpets and other items. There were also asbestos fibers, and asbestos is a known human carcinogen.
    U.S. Environmental Protection Agency
  • What was in the 9/11 dust?

    There were a number of metal particles found in the dust, including lead. Lead and other heavy metals can be toxic to the brain.
    U.S. Environmental Protection Agency
  • What was in the 9/11 dust?

    Stone chips were also found in the dust.
    U.S. Environmental Protection Agency
  • What was in the 9/11 dust?

    Paul Lioy of Rutgers University and UMDNJ Robert Wood Johnson School of Medicine collected dust samples and analyzed the contents.
    Paul Lioy and Environmental Health Perspectives
  • What was in the 9/11 dust?

    Lioy discovered glass fibers in the dust.
    Paul Lioy and Environmental Health Perspectives
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