Minnesota Public Radio slideshow:
Part 1: The science
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3M headquarters in Maplewood, Minnesota. Chemical contamination found in wells and landfills in Washington County has been linked to substances made by 3M. (MPR Photo/Melanie Sommer)

3M headquarters in Maplewood, Minnesota. Chemical contamination found in wells and landfills in Washington County has been linked to substances made by 3M.

(MPR Photo/Melanie Sommer)
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