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WTC Left Sedimentary Fingerprint
Quixotic1 writes "The NSF announced scientists had found a "distinct fingerprint on the sedimentary record in New York Harbor" due to the destruction of the World Trade Center. The findings were extrapolated from the presence of high concentrations of several elements that make up gypsum, a material used in drywall, and silica, likely from fiberglass."
From my understanding of the article, the scientists were not simply looking for a WTC sedimentary layer to simply confirm that it was there. The scientists involved seem more interested in studying how small particles in air and water spread in that region. And that is interesting and potentially useful.
Logic, macros, and more