Compresor House And Chimney Opposite Technical College Site

The compressor house and associated chimney stack, located opposite the Technical College site on Dolcoath Road in Tuckingmill, were built on the site of the New Sump Shaft of the former Dolcoath Mine, likely in the late 19th century, and have been altered over time. The compressor house is constructed from slobbered killas rubble with granite quoins and features brick arches over the openings, topped with a scantle slate roof. It is a rectangular single cell structure with a symmetrical facade that includes a wide round-headed doorway flanked by tall round-headed windows, all with quoined jambs and keyed brick heads. Above the doorway is an oculus with a keyed brick surround. The side walls also have two similar windows, which were boarded at the time of the survey in 1988. The roof is hipped and covered with cockscomb tiles along the short ridge. At the back, there is a low sloped extension that connects to the west side of the chimney stack, which is tapered and cylindrical in shape, featuring a short set-back brick stage finished with a simple moulded cornice. Historically, the New Sump Shaft was known as Cornwall's deepest and richest tin mine, dating back to at least 1815 and reaching a depth of 3,000 feet.