(July 18, 2018, 4:04 PM EDT) -- DETROIT — The owner of a steel mini mill on July 17 agreed to pay a $325,000 penalty and upgrade emissions controls at its facility to resolve allegations asserted by the federal government in a lawsuit simultaneously filed in Michigan federal court accusing the company of violating the Clean Air Act (CAA) (United States v. Gerdau Specialty Steel N.A. Michigan, No. 18-cv-12228, E.D. Mich.)....