The U.S. Environmental Protection Agency (EPA) published a Federal Register notice on May 16, 2017, announcing the availability of and requesting public comment on a draft guidance document entitled “Guidance on EPA’s Section 8(a) Information Gathering Rule on Nanomaterials in Commerce.” 82 Fed. Reg. 22452. The promised guidance provides answers to questions EPA has received from manufacturers (includes importers) and processors of certain chemical substances when they are...