Mine offices at Llywernog Mine is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 22 June 1995. Industrial.
Mine offices at Llywernog Mine
- WRENN ID
- graven-span-grove
- Grade
- II
- Local Planning Authority
- Ceredigion
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 22 June 1995
- Type
- Industrial
- Address
- Mine offices at Llywernog Mine, Aberystwyth, Blaenrheidol
- OS grid reference
- SN 732 809
- Coordinates
- 52.41182, -3.86512
- Source
- Cadw listing
Description
The mine office building at Llywernog Mine is a two-storey structure built from coursed squared local sandstone, featuring yellow brick dressings and a hipped slate roof. It has a small yellow brick chimney at the right end. The front of the building consists of seven bays, with brick quoins. The five central bays are closely spaced and contain 16-pane windows above three wide doors, which alternate with two similar windows. The windows are designed with small panes in fixed or tilting lights, slate sills, and yellow brick cambered-headed surrounds with rusticated jambs. The doors are made of board and are set in similar surrounds, with the right door designed as a stable door. The right bay features a broader 16-pane window above a square 20-pane window, while the left side has a taller doorway topped with a small brick-framed blank roundel.
On the left end, the building adjoins the wheel-pit for a 50-foot (15.25 meters) wheel, which is listed with the crusher-house. The right end wall has a raised chimney breast. The rear of the building is built into the slope and includes two first-floor doorways and a small roundel to the right. The roof has three 20th-century skylights.
The interior has been restored and is now used as a museum, featuring a smith's hearth at the eastern end.
Local climate
Mine offices at Llywernog Mine sits in one of the wettest parts of the UK, with an average of 1,280 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 40 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 21 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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