Minnesota Public Radio slideshow:
Part 4: The company
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3M is financing new research to determine the extent of PFOA and PFOS in Minnesota's environment, five years after the original Scotchgard formula was taken off the market. (MPR Photo/Melanie Sommer)

3M is financing new research to determine the extent of PFOA and PFOS in Minnesota's environment, five years after the original Scotchgard formula was taken off the market.

(MPR Photo/Melanie Sommer)
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