Birmingham Steel, including the Mississippi Steel plant and Birmingham, Alabama operations. In 2004, Nucor acquired Corus Tuscaloosa, and in 2005, they purchased Fort Howard Steel and Marion Steel. In 2006, Nucor acquired Connecticut Steel, Verco Decking, and Harris Steel. The $1.07 billion acquisition of Harris Steel expanded Nucor into production of fabricated rebar, which had a strong market due to increased spending on infrastructure. In 2007, the company's Nucor Building Systems division acquired Magnatrax, which bolstered its share of the pre-engineered metal building systems market. In March 2008, Nucor purchased the David J. Joseph Company, one of the largest scrap brokers and recycling companies in the United States, in order to take more control of its raw material supply and prices. In 2012, Nucor purchased Skyline Steel. John J. Ferriola was named as Chief Executive Officer of Nucor, and Daniel R. DiMicco was named Executive Chairman, effective from January 1, 2013. DiMicco retired on January 1, 2014. In 2014, the company purchased Gallatin Steel Company. In 2015, the company acquired additional cold finish bar facilities in Ohio and Georgia. In 2016, Nucor announced the acquisition of a steel plate mill in Longview, Texas, and structural tube mills in Mississippi, Alabama, and Illinois. The acquisition of these facilities expanded Nucor's capabilities in the plate market and added structural tube to the company's product mix. In April 2017, the company announced an $85 million upgrade of the rolling mill at its Marion, Ohio rebar and signpost operation. In August 2017, the company acquired St. Louis Cold Drawn, Inc. On September 6, 2019, Nucor announced that John Ferriola (CEO) would retire at the end of the year and would be replaced by Leon J. Topalian. In December 2019, the company announced the acquisition of TrueCore Insulated Panels. In March 2020, the company's joint venture with JFE Steel in Mexico began production. In June 2021, the company announced the acquisition of the insulated metal panel business from Cornerstone Building Products. In December 2021, Nucor acquired a majority share in California Steel Industries. Controversies Environmental record In 2000, Nucor paid $98 million to settle with the United States Department of Justice and the United States Environmental Protection Agency to resolve allegations that it had not adequately controlled the emission of toxic chemicals into the air, water, and soil in Alabama, Arkansas, Indiana, Nebraska, South Carolina, Texas, and Utah. The settlement was "the largest and most