The Tredegar Iron Works were a rolling mill and ironworks in Richmond,Virginia that was built in 1837 and continued production until the mid-20th century. The iron works were built by investor Francis B. Deane, Jr., and they were named after the Welsh industrial town of Tredegar, which supplied many of its early workers. It was once managed by Joseph R. Anderson, who would go on to become a Confederate general during the American Civil War. They were the biggest ironworks of the Confederacy during the American Civil War, supplying half of the Confederate States Army's artillery, as well as the iron planting for CSS Virginia, the first Confederate ironclad. It was one of few Civil War-era buildings to survive the burning of Richmond in April 1865, and it remained a prominent factory until the Panic of 1873.