3M Knew Its Fluorochemicals Were Contaminating Human Blood But Failed to Do Anything
Recently, the New Yorker ran a very important piece, reported by investigative journalist Sharon Lerner, in collaboration with ProPublica, with the headline “How 3M Discovered, Then Concealed the Dangers of Forever Chemicals.” 3M Corporation makes products like building materials and adhesives. The article tells the story of Kris Hansen, a chemist at 3M, who was asked by her boss, Jim Johnson, to test human blood to see if it had been contaminated with fluorochemicals, manmade compounds that are found in a number of 3M products including Scotchgard and firefighting foam. Unbeknownst to Hansen, Johnson had made several discoveries about the contaminants years before in some cases, he’d been directed to do the work by 3M’s lawyers.
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At that time, Johnson told Hansen that PFOS, one of these fluorochemicals, often entered the bloodstream of workers in the 3M factory but didn’t harm them. However, Johnson had also been told that an outside lab kept finding contaminants in blood samples from the American Red Cross, taken from the general population who shouldn’t have had those contaminants present.
Hansen’s job then was to figure out whether the lab had erred in its findings. In testing, she, too, found that PFOS was in the sample, which was from someone who hadn’t worked for the company; the other samples she and her team tested were also contaminated. She told her boss, but subsequently found that her warnings about the contamination were left out of official meeting notes.