Compressor House Approximately 7 Metres West Of Pump Engine House To Marriott'S Shaft On South Wheal Frances Sett

CARN BREA PIECE SW 63 NE 8/155 Compressor house approx. 7 metres west of pump engine house to Marriott's shaft on South Wheal Frances sett

GV II Compressor house to former tin mine, now derelict. Late 1890's, for South Frances United Mine. Uncoursed granite rubble with quoins, brick arches to openings; now roofless. Rectangular plan, 3x2 bays, on north-south axis. Two storeys, with round-headed windows at 1st floor; the west side has a square- headed doorway up 4 steps near the left (north) end, 7 small rectangular openings at ground level (tunnels or conduits which pierce the foundations laterally), and 3 large windows at 1st floor; the opposite side is similar except for the doorway, and the gable walls have square-headed windows at ground floor, round-headed above, and small circular windows at the apex. Interior: solid concrete plinth to 1st floor level, with central cut-out and central fly-wheel recess. History: formerly contained cross-compound 2-stage plant by Fraser and Chalmers, capable of working 30 rock drills. Reference: Palmer & Neaverson, op.cit. Part of a very impressive group of remains of one of the best equipped mines in Cornwall, closed in 1918.

Listing NGR: SW6804139376