(June 11, 2024, 9:03 AM EDT) -- CHARLESTON, S.C. — A firefighter who says he developed cancer from exposure to per- and polyfluoroalkyl substances (PFAS) has sued 3M Co., E.I. du Pont de Nemours & Co. and others in South Carolina federal court alleging that they continue to misrepresent the safety of PFAS while they engage in fraudulent concealment regarding its dangers....