![]() ![]() ![]() "The debris pile acted like a chemical factory. This report gives a reasonable estimate of what type of pollutants were actually present at Ground Zero. "Our first report was based on particles that we collected one mile away. "Now that we have a model of how the debris pile worked, it gives us a much better idea of what the people working on and near the pile were actually breathing," Cahill said. The conditions would have been "brutal" for people working at Ground Zero without respirators and slightly less so for those working or living in immediately adjacent buildings, said the study's lead author, Thomas Cahill, a UC Davis professor emeritus of physics and atmospheric science and research professor in engineering. It will be essential to understanding the growing record of health problems. The new work helps explain the very fine particles and extraordinarily high concentrations found by an earlier UC Davis study, the first to identify very fine metallic aerosols in unprecedented amounts from Ground Zero. The fuming World Trade Center debris pile was a chemical factory that exhaled pollutants in particularly dangerous forms that could penetrate deep into the lungs of workers at Ground Zero, says a new study by UC Davis air-quality experts. (Sylvia Wright/UC Davis News Service file photo) ![]() 23, 2002, just before testifying at an EPA investigative hearing in Manhattan. At Ground Zero in New York City, UC Davis Professor Emeritus Thomas Cahill describes his air-quality findings to ![]()
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