CINCINNATI - A federal magistrate judge in Ohio on Nov. 13 held that a revised privilege log submitted by defendant companies in a Clean Air Act, 42 U.S.C.S. § 7401, lawsuit was sufficient but ordered the companies to produce one category of documents after finding that they were not protected from disclosure by the work product doctrine (Glenn Graff, et al. v. Haverhill North Coke Company, et al., No. 09-cv-670, S.D. Ohio; 2012 U.S. Dist. LEXIS 162013).