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Cof Cymru: National Historic Assets of Wales · Wales

Garage at Ynysmaerdy Farm (formerly part of Llantrisant Colliery)

Llanharan, Rhondda Cynon Taff, Wales

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
7 October 1994
Locality
Ynysmaerdy
Town
Pontyclun
Community
Llanharan
Unitary authority
Rhondda Cynon Taff
Country
Wales
Coordinates
51.54557, -3.39647
Cadw reference
15837

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

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.

Llantrisant or Ynsmaerdy 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.

The garage building appears to have been used as assembly shops. It is a single-storey gabled building of rendered rubble sandstone with red brick dressings and a slate roof. It is 4 bays long and 2 bays wide. To the E elevation there are 4 tall segmental headed windows with small-paned metal frames, 6 panes by 8. The W elevation is open-fronted with concrete posts and lintels allowing large objects to be carried into the building. There are 2 small windows to the N gable end, with metal framed windows, 4 panes by 5; and another window and a raised doorway to the S gable end.

Listed for group value in this unusually complete and impressive colliery complex.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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