MERCURY AGREEMENT REDUCTION PROGRAM - US EPA- nw indiana steel mills ,1 I. Executive Summary On September 25, 1998 three Northwest Indiana steel mills entered into a unique voluntary agreement with Federal and State agencies and the Lake Michigan Forum in anlist of steel mills in northwest indiana - hankofoundation.orgIn Lorain, Ohio, shuttered steel mills like this one are symbols of a bygone era when manufacturing was king. Today, Lorain is struggling. Lorain is a town in Lorain County with a population of ...