Reservoir of former Llantrisant Colliery, Llanharan, Rhondda Cynon Taff

Coordinates

Latitude: 51.5471 / 51°32'49"N

Longitude: -3.3983 / 3°23'53"W

OS Eastings: 303137

OS Northings: 184055

OS Grid: ST031840

Mapcode National: GBR HM.FRYJ

Mapcode Global: VH6DX.1CTW

Plus Code: 9C3RGJW2+RM

Entry Name: Reservoir of former Llantrisant Colliery

Listing Date: 7 October 1994

Last Amended: 14 November 2000

Grade: II

Source: Cadw

Source ID: 15842

Building Class: Industrial

ID on this website: 300015842

Location: Located in the wood to the W of the former colliery engine hall.

County: Rhondda Cynon Taff

Community: Llanharan

Locality: Ynysmaerdy Farm

Traditional County: Glamorgan

Tagged with: Architectural structure

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Llantrisant

History

Llantrisant or Ynysmaerdy Colliery was established by the Powell Duffryn Steam Coal Company after World War I. It closed in 1942 following an underground explosion. It was constructed on the efficient modern model developed by the Powell Duffryn Company, with a single engine hall containing the main power equipment needed on the surface. The site is a particularly complete and impressive colliery complex, containing the engine hall, workshops and stores, ruined offices, a separate winding engine house, railway lines, tips, a long revetment wall, a reservoir, and an explosives store. It was associated with the planned housing estate at Ynysmaerdy.

Exterior

The reservoir is a perfectly circular structure approximately 30m in diameter and 9m high, erected between the rock faces of a former quarry on the line of a small stream. It is constructed as a thin reinforced concrete shell with straight vertical sides topped with a narrow lip, and a dished bottom. The use of concrete in such a structural form was unusual at this date, and this example demonstrates some virtuosity of design.

Reasons for Listing

Listed for its advanced use of reinforced concrete, and for group value in this unusually complete and impressive colliery complex.

External Links

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

Recommended Books

Other nearby listed buildings

II Cow Shed at Ynysmaerdy Farm (formerly stores of Llantrisant Colliery)
Located at the N end of the former colliery engine hall.
II Engine Hall of former Llantrisant Colliery
Located to the N of Ynysmaerdy farmhouse.
II Barn and cow house at Ynysmaerdy Farm
On the N side of the farmhouse.
II Hay barn at Ynysmaerdy Farm (former winding engine house of Llantrisant Colliery)
Located to the E of Ynysmaerdy farmhouse.
II Explosives store of former Llantrisant Colliery
Located in the SW corner of a field NW of the colliery complex.
II Garage at Ynysmaerdy Farm (formerly part of Llantrisant Colliery)
Located to the S of Ynysmaerdy farmhouse, which is reached by farm road on the E side of a minor road to Ynysmaerdy approximately 1.2km NW of Talbot Green.
II Revetment wall of former Llantrisant Colliery
Located next to the former railway line to the E of the colliery complex.
II Stable and cow house at Lanelay Farm
Approximately 3km E of Llanharan, set back on the W side of minor road to Ynysmaerdy and N of Lanelay Hall at Talbot Green.

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History in Structure

Reservoir of former Llantrisant Colliery

A Grade II Listed Building in Llanharan, Rhondda Cynon Taff