This is one of the oldest mills in the valley, known as Paint Mill because of its use in grinding barytes (Barium Sulphate) for the paint industry. The material was heated (calcined) on metal floors supported on bricks in a kiln-like structure and was used as a white pigment for paint manufacture. This mill has also been used as a lead smelting mill, to grind corn and as a bleaching mill and the wheel pit, old bleaching vats, traces of white barytes and the underground heating system with the associated chimneys to dry out the mineral are still visible.