U.S. Steel’s Edgar Thomson Plant was founded by Andrew Carnegie in 1873 and forms the nucleus of what is now called the Mon Valley Works. (Mark Dixon photo via Flickr, licensed under Creative Commons) Business, National, Politics Nippon, U.S. Steel Finalize Takeover Plans by eNews Park Forest on June 20, 2025 eNews Park Forest Author More in Business: Park Forest Seeks Nominations for 2025 Sam Montella Business Award January 6, 2026 A Breath of Life for a Park Forest Eyesore: Work Begins at Former Stop-N-Shop October 18, 2025 Park Forest to Welcome Imishe Massage, a Dream Years in the Making September 3, 2025 Deal will give federal government a seat on company’s board