Located on the Detroit River, two miles from the famous Rouge Plant, is the Great Lakes Works of U.S. Steel. This plant serves the automobile industry, and produces 3.8 million tons of raw steel per year. The first mill here was built in 1929 by the National Steel Corporation. National Steel declared bankruptcy in 2002, and was bought by U.S. Steel for $850 million. The rolling works are separated from the main plant by a marina and the Praxair company plant, which supplies industrial gases like oxygen, nitrogen, and hydrogen, for many of the steel works in the nation.