Originally constructed under a license from the Bishop of Durham in 1667, saw significant development over the years. By the 1740s, it boasted an annual output of approximately 40 tons of lead, with much of the ore sourced from Lunedale until a closer mill was established in 1756. In 1831, the mill was put up for sale and featured a roasting furnace, a smelting furnace, two smelting hearths, a slag hearth, a refining furnace, and a reducing furnace. Additionally, by 1842, three Pattinson pots had been added for the de-silvering process of the lead.