Ancient Monuments

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Remains of Tondu Ironworks

A Scheduled Monument in Ynysawdre, Bridgend (Pen-y-bont ar Ogwr)

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Latitude: 51.548 / 51°32'52"N

Longitude: -3.5997 / 3°35'58"W

OS Eastings: 289172

OS Northings: 184449

OS Grid: SS891844

Mapcode National: GBR HC.FP8B

Mapcode Global: VH5HB.KCB4

Entry Name: Remains of Tondu Ironworks

Scheduled Date: 7 November 1985

Source: Cadw

Source ID: 2911

Cadw Legacy ID: GM433

Schedule Class: Industrial

Category: Ironworks

Period: Post Medieval/Modern

County: Bridgend (Pen-y-bont ar Ogwr)

Community: Ynysawdre

Built-Up Area: Sarn

Traditional County: Glamorgan


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.

Source: Cadw

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