Caernarvon Township. In 1760, he and his partner David Caldwell purchased land from Huber along Hammer Creek, and built Speedwell Forge. Robert Coleman Robert Coleman (1748–1825) was born in Caste Finn, Ireland, and immigrated to Pennsylvania in 1764. Arriving penniless, his beautiful penmanship soon earned him a clerk position for the Reading Prothonotary. After two years, he was hired by Peter Grubb Jr. as a clerk at Hopewell Forge, in Lancaster County. However, in 1767, after only six months at Hopewell Forge, Coleman was hired by James Old, who had just leased Quittapahilla Forge in Lancaster County (now Lebanon County). Coleman lived with the Old family, travelling between Speedwell and Quittapahilla. Because of its distance from town, a forge had to be self-sustaining, employing farmers, lumberjacks, blacksmiths, horses, livestock, etc. Thus the iron master oversaw not just a forge, but a community. In 1767, Old took Coleman to Reading Furnace, in Chester County, Pennsylvania. In 1773, Coleman married Old's daughter, Anne. With the help of his father-in-law, Coleman leased Salford Forge, and began building his iron empire. In 1784, Coleman purchased Speedwell Forge from his father-in-law for 7000 pounds. After selling Speedwell, James Old purchased an interest in Hopewell Furnace in Berks County, Pennsylvania. There are indicators that he worked as a Justice of the Courts in Lancaster, and was a member of the State Assembly. Coleman owned several furnaces during the Revolution, receiving many contracts for munitions and chain links, which were stretched across the bays to keep English war ships at bay. Coleman reinvested his profits, buying many forges and furnaces, even the Cornwall iron mine. He became Pennsylvania's first millionaire, and by the time of his death, his legacy was fully established. Speedwell Forge was used as a training ground for his sons, before being promoted to furnaces. Use of anthracite coal By the 1850s, improvements in coal technology had produced anthracite coal, which burned hotter than bituminous coal. New furnaces burned hotter and were much more efficient, and the industry was moving west to places like Pittsburgh. As a result, many of the furnaces and forges closed. Speedwell closed in 1854; Cornwall held out until 1883. Some of the furnaces (including Cornwall and Hopewell) survived, simply because the furnaces were too massive to do anything with. Forges, on the other hand, could be completely dismantled and abandoned. As a result, there are no extant forges remaining