The United States Steel Corporation , more commonly known as U.S. Steel, is an integrated steel producer with major production operations in the United States, Canada, and Central Europe. The company is the world's tenth largest steel producer ranked by sales . It was renamed USX Corporation in 1991 and back to United States Steel Corporation in 2001 when the shareholders of USX spun off its steel-making assets following the acquisition of Marathon Oil in 1982. It is still the largest domestically owned integrated steel producer in the United States, although it produces only slightly more steel than it did in 1902.
The Pittsburgh Steelers are a professional football team based in Pittsburgh, Pennsylvania. The team currently belongs to the North Division of the American Football Conference (AFC) in the National Football League (NFL). Founded in 1933, the Steelers are the oldest franchise in the AFC. Pittsburgh has won more Super Bowl titles (six), won more AFC Championship Games (eight) and played in (fifteen) and hosted more (eleven) conference championship games than any other AFC or NFC team. The Steelers share the record for most Super Bowl appearances with the Dallas Cowboys (eight). The Steelers won their most recent championship, Super Bowl XLIII, on February 1, 2009.