(August 1, 2019, 12:42 PM EDT) -- TRENTON, N.J. — A group of shareholders on July 29 filed a class action in New Jersey federal court against the 3M Co. contending that it engaged in a scheme to defraud investors by issuing “false and misleading statements to conceal the truth” about 3M’s exposure to legal liability related to its products known as per- and polyfluoroalkyl substances (PFAS) (Heavy & General Laborers’ Locals 472 & 172 Welfare Fund v. 3M Company, et al., No. 19-15982, D. N.J.)....