Rock-crusher house and wheel-pit at Llywernog Mine is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 22 June 1995. Industrial building.
Rock-crusher house and wheel-pit at Llywernog Mine
- WRENN ID
- frozen-spindle-woodpecker
- Grade
- II
- Local Planning Authority
- Ceredigion
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 22 June 1995
- Type
- Industrial building
- Address
- Rock-crusher house and wheel-pit at Llywernog Mine, Aberystwyth, Blaenrheidol
- OS grid reference
- SN 732 809
- Coordinates
- 52.41179, -3.86529
- Source
- Cadw listing
Description
The rock-crusher house and wheel-pit at Llywernog Mine is a Grade II listed structure made of rubble stone, featuring a restored upper floor and a slate pyramid roof. The building has a square plan and is built into a steep bank. The south front includes a 20th-century lean-to made of corrugated iron and timber on the ground floor, with a single six-pane window located under the eaves above. The west side also has a similar six-pane window under the eaves, along with a broad doorway to the right, which has a timber lintel and iron rail tracks leading inside. The rear of the building features a stone ramp leading down to a gabled doorway that breaks the eaves at the first floor, used for bringing in ore.
Attached to the right of the rock-crusher house is a large raised wheel-pit made of rubble stone, which projects forward and includes a restored end wall with a blank roundel made of yellow brick. There is also a brick-headed door on the east side. Above these features is a slate sill course, likely indicating the top of the 1861 wheel-pit designed for a 40-foot (12.2 meters) wheel, which was raised approximately 1.5 meters in 1874-1875 to accommodate a 50-foot (15.25 meters) wheel. Cast-iron brackets for the waterwheel can be found on the top of the wall. The pit is deep.
The interior of the building has been partially restored and includes beams that support a mid to late 19th-century iron roll-crusher, which was relocated from the Llawrcwmbach mine.
Local climate
Rock-crusher house and wheel-pit 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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