A Target 8 investigation found that Wolverine Worldwide was warned nearly 20 years ago about the potential dangers of a chemical in 3M’s Scotchgard is leading to a state investigation in Michigan.

The Michigan DEQ said it was unaware until Target 8 reported a letter from 3M to Wolverine from 1999, warning of the potential hazards of PFOS in Scotchgard.

Read the full article by Ken Kolker for WoodTV here.