I have not seen any reputable evidence of "high radiation levels." Dust content was 2X above background = nothing interesting.
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And smoking a cigarette gives you thousands of times above background exposure.
Lots of building materials (granite, ceramics, etc.) contain detectable amounts of uranium and thorium. So many possible sources in debris.
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There were also several medical offices in WTC complex, too, and they sometimes have devices with significant activity. You get my drift.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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