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Cof Cymru: National Historic Assets of Wales · Wales

Remains of Tondu Ironworks

Ynysawdre, Bridgend, Wales

A scheduled monument in Ynysawdre, Bridgend, recorded as Ironworks (Post Medieval/Modern).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Remains of Tondu Ironworks, Ynysawdre, Bridgend, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Ironworks
Period
Post Medieval/Modern
Date of designation
7 November 1985
Community
Ynysawdre
Unitary authority
Bridgend
Country
Wales
Coordinates (centre of the scheduled area)
51.54793, -3.59989
SAM number
GM433
Cadw record number
2911

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1907 · 248 Pontypridd (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • Sheet 7 South Wales (University Library, Vrije Universiteit Amsterdam)
  • [Kaart] (University Library, Vrije Universiteit Amsterdam)

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument comprises the remains of several buildings, including a blast furnace, coke oven and leat, and an open excavated area related to the production of iron. Tondu Ironworks was initially a complex of rolling mills, prior to 1853. The works were expanded sometime between 1854 and 1875 to include 23 puddling furnaces and brick stacks, 10 balling furnaces, 4 rolling mill engines and 4 sets of rolling mills, with an associated boiler house of 8 Lancashire boilers and 2 chimneys.

The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of the development of the iron industry. An ironworks may be part of a larger industrial complex and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

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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