Mealey's (October 29, 2021, 1:30 PM EDT) -- GRAND RAPIDS, Mich. — The 3M Co. and another defendant on Oct. 22 filed a brief in Michigan federal court seeking to compel production of an unpublished document that is being cited by one of the plaintiffs’ experts in a lawsuit alleging injuries from exposure to per- and polyfluoroalkyl substances (PFAS). The defendants seek the document because it purportedly contains an analysis by a professor who claims that 3M skewed studies to downplay the risks associated with PFAS exposure....