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  On Friday October 31, 1997, the National Toxicology Program Board of
  Scientific Counselors of the National Institute of Environmental Health
  Sciences (NIEHS) voted to list 2,3,7,8-tetrachlorodibenzo-p-dioxin as a
  known human carcinogen. This decision marks the second time that a major
  group of scientific experts have evaluated the human health studies on
  dioxin and concluded, based on all available data, that dioxin should be
  considered to be a human carcinogen. In February of this year the
  International Agency for Research on Cancer (IARC) voted similarly to
  classify dioxin as a known human carcinogen. 
  The meeting was held in Research Triangle Park to review substances for
  listing or delisting from the Ninth Report on Carcinogens. The
  Subcommittee on Carcinogens of the Board of Scientific Counselors
  evaluated 14 substances including dioxin. They evaluated a background
  document prepared and presented by Dr. Arnold Schector for the NIEHS. Two
  scientific peer reviewers then discussed their critique of the report. 
  Public comments were then heard. Five presentations were given including
  one from Greenpeace and CCHW. Following open discussion, the Subcommittee
  voted to list dioxin as a known human carcinogen.
  This decision is given as a recommendation to an internal scientific
  committee who evaluates all the decisions made by the Subcommittee on
  Carcinogens and passes on their input and recommdations to the Director of
  NIEHS. The Director makes a final decision regarding the proposed listing
  and/or delisting of substances. This decision is submitted to the Office
  of the Secretary, DHHS who reviews and approves the final decisions.
  For more information about the NTP process of listing and/or delisting
  substances for the Biennial Report on Carcinogens, contact Dr. Larry Hart
  at 919-541-3971
   CCHW  Center for Health, Environment and Justice
        P.O. Box 6806  Falls Church, VA 22040
        (703) 237-2249   (703) 237-8389 (fax)