Llewellyn Iron Works was a foundry in 19th- and 20th-century Los Angeles and Torrance, California, United States.
Brothers Reese Llewellyn, David Llewellyn, William Llewellyn, and John Llewellyn, of Amman Valley, Wales,[1] first organized the company in 1886. The iron works, which had an anti-union leadership team, was bombed on Christmas Day 1910, most likely by Ortie McManigal, an associate of those responsible for the L.A. Times bombing two months earlier.[2] The dynamite explosion at Redondo and Main injured a night watchman.[3] The company moved its factory to Torrance in 1912. Llewellyn produced the railings that decorate the interior of the Bradbury Building.[4] The steel-rolling mill in Torrance produced the steel used in the L.A. Biltmore Hotel on Pershing Square and several downtown banks. Llewellyn merged with Columbia Steel Corp. of Utah in 1923, and Columbia was acquired by U.S. Steel in 1929. The U.S. Steel plant in Torrance closed in 1979.