It has been nearly five years since the World Trade Centers collapsed, producing dense clouds and exposing thousands of persons to toxic materials. Despite the fact that this was one of the most televised and infamous exposure events in recent history, estimates of the concentration of that cloud—in milligrams per cubic meter—have never been published. We will explore the WTC exposure events of 9/11/2001 in a new series of posts beginning soon.
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jour·nal n. A personal record of occurrences, experiences, and reflections kept on a regular basis; a diary.
95. If it's not physics, it's magic.
--G. Noss
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