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AAP
AAP
Farid Farid

THE TRUTH ABOUT: Manufacturer 3m warned over chemicals at quarry - The Untold Story

The NSW EPA has for the first time taken regulatory action against 3M and its local Australian arm. (Darren England/AAP PHOTOS)

A set of "dangerous and insidious" chemicals detected at a river near a World Heritage site have been traced back to a former quarry used by manufacturing giant 3M.

PFAS soil, sediment, groundwater and surface water have been found across a 100-hectare area of the inactive Brogans Creek lime quarry northwest of the Blue Mountains, the NSW Environment Protection Authority says.

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