Columbia Steel Company

Columbia Steel Company was an American steel company, incorporated in Nevada on October 1 1909 with a capital of $500,000. The company built a plant in Pittsburg, California. The company was acquired by U.S. Steel in 1930 and later merged with Geneva Steel to form U.S. Steel's Columbia-Geneva Steel Division. In 1986, U.S. Steel created USS-POSCO Industries as a joint venture with Pohang Iron and Steel Company to run the Pittsburg facility. U.S. Steel announced the closure of the Pittsburg plant in 2022.