Dry Approximately 50 Metres South-East of Pump Engine House to Mariott's Shaft on South Wheal Basset Sett

This building is a miners' changing room, or "dry," located approximately 50 metres south-east of the pump engine house to Marriott's shaft on the South Wheal Basset sett. It was constructed in 1908 for Basset Mines Ltd. and is now derelict and in a very dilapidated state. The structure is made of uncoursed rubble with granite quoins and features brick arches over its openings, though it is currently roofless. The building has a large rectangular plan oriented on an east-west axis, with a short wing on the south side. It is a single storey, but the right-hand end of the front wall has collapsed, and several of the remaining front windows are damaged. The original doorway is no longer detectable. When it was built as new changing rooms during improvements to the mine, it was noted to be "second to none in the county." This building is part of a significant group of remains from one of the best-equipped mines in Cornwall, which closed in 1918, and is included for its group value.