Cof Cymru: National Historic Assets of Wales · Wales
Reservoir of former 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 Farm
- Community
- Llanharan
- Unitary authority
- Rhondda Cynon Taff
- Country
- Wales
- Coordinates
- 51.54705, -3.39829
- Cadw reference
- 15842
Slide toward Today to fade the historical sheet and see the modern map underneath.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid 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).
Cadw's description
Location
Located in the wood to the W of the former colliery engine hall.
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.
Reason for designation
Listed for its advanced use of reinforced concrete, and for group value in this unusually complete and impressive colliery complex.
Nearby in the register
- Cow Shed at Ynysmaerdy Farm (formerly stores of Llantrisant Colliery)Agriculture and Subsistenceunder 1 mi
- Engine Hall of former Llantrisant CollieryIndustrialunder 1 mi
- Barn and cow house at Ynysmaerdy FarmAgriculture and Subsistenceunder 1 mi
- Hay barn at Ynysmaerdy Farm (former winding engine house of Llantrisant Colliery)Agriculture and Subsistenceunder 1 mi
Other entries of the same register within about three miles of this one, by straight line.