1/2 mile E of Valley Forge on Doe River are the ruins of an iron mill built in 1820 by William B Carter of Elizabethton. It was purchased in 1824 by James, John and Joseph O'Brien and William Gott. They owned 9000 acres of land and operated the furnace, the Valley Forge, 2 bloomeries and a water driven hammer. With slave labor they produced pig and bar iron until they sold their holdings to Nathaniel G Taylor in 1861.