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(回答先: Re:火災燃焼でも崩壊しなかったWTC5,6。しかし、WTC7は崩壊した超常現象(笑) 投稿者 World Watcher 日時 2006 年 8 月 29 日 09:53:36)
けっこう興味深い記事です。
■U.S. agency accused of misleading data on 9/11 dust
By Anthony DePalma The New York Times
Published: August 25, 2006
NEW YORK A senior scientist at the U.S. Environmental Protection Agency has accused the agency of relying on misleading data about the health hazards of World Trade Center dust.
The scientist, who has been sharply critical of the agency in the past, claimed in a letter to members of the New York congressional delegation this week that test reports in 2002 and 2003 distorted the alkalinity, or pH level, of the dust released when the twin towers collapsed in the attacks of Sept. 11, 2001, playing down its danger.
Some doctors suspect the highly alkaline nature of the dust contributed to the variety of ailments that recovery workers and residents have complained of since the attack.
Tests of the gray-brown dust conducted by scientists at the U.S. Geological Survey a few months after the attack found the dust was highly alkaline, in some instances as caustic or corrosive as drain cleaner, and capable of causing severe irritation and burns.
The tests that are being challenged by the EPA scientist were conducted by independent scientists at New York University. Those tests also indicated that larger particles of dust were highly alkaline. But they found that smaller dust particles - those most likely to reach into the lower airways of the lungs, where they could cause serious illnesses - were not alkaline and caustic.
The geological survey's tests did not differentiate the dust by particle size.
A spokeswoman for the agency, Mary Mears, said in a statement that the EPA stood behind its work on ground zero environmental hazards, as did the university scientists. The scientist making the complaint, Cate Jenkins, who has a Ph.D. in chemistry and works in the agency's office of solid waste and emergency response, said the test results helped the EPA avoid legal liability. New York residents have sued the agency in federal court, claiming it bungled the cleanup.
Jenkins said the test reports had contributed "to emergency personnel and citizens not taking adequate precautions to prevent exposures." She has worked for the EPA since 1979 and has been in conflict with the agency for years over her whistle-blowing activities.
NEW YORK A senior scientist at the U.S. Environmental Protection Agency has accused the agency of relying on misleading data about the health hazards of World Trade Center dust.
The scientist, who has been sharply critical of the agency in the past, claimed in a letter to members of the New York congressional delegation this week that test reports in 2002 and 2003 distorted the alkalinity, or pH level, of the dust released when the twin towers collapsed in the attacks of Sept. 11, 2001, playing down its danger.
Some doctors suspect the highly alkaline nature of the dust contributed to the variety of ailments that recovery workers and residents have complained of since the attack.
Tests of the gray-brown dust conducted by scientists at the U.S. Geological Survey a few months after the attack found the dust was highly alkaline, in some instances as caustic or corrosive as drain cleaner, and capable of causing severe irritation and burns.
The tests that are being challenged by the EPA scientist were conducted by independent scientists at New York University. Those tests also indicated that larger particles of dust were highly alkaline. But they found that smaller dust particles - those most likely to reach into the lower airways of the lungs, where they could cause serious illnesses - were not alkaline and caustic.
The geological survey's tests did not differentiate the dust by particle size.
A spokeswoman for the agency, Mary Mears, said in a statement that the EPA stood behind its work on ground zero environmental hazards, as did the university scientists. The scientist making the complaint, Cate Jenkins, who has a Ph.D. in chemistry and works in the agency's office of solid waste and emergency response, said the test results helped the EPA avoid legal liability. New York residents have sued the agency in federal court, claiming it bungled the cleanup.
Jenkins said the test reports had contributed "to emergency personnel and citizens not taking adequate precautions to prevent exposures." She has worked for the EPA since 1979 and has been in conflict with the agency for years over her whistle-blowing activities.
http://www.iht.com/articles/2006/08/25/news/dust.php
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