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Cof Cymru: National Historic Assets of Wales · Wales

Calcining Kilns

Blaenavon, Torfaen, Wales

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
9 February 1995
Locality
Blaenafon Ironworks
Community
Blaenavon
Unitary authority
Torfaen
Country
Wales
Coordinates
51.77751, -3.08936
Cadw reference
15295

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

Situated at the northern edge of the site, above the Blast furnaces.

Calcining ovens were used to reduce impurities from the iron ore before smelting. Deakin's map of 1819 shows two rows of kilns in use on the site, although the existing run of kilns are later (pre 1880). Broken ore was tipped into the kilns from a tramway on the bank behind. From here ore was tipped into the furnaces.

Course rubble-stone structures, built into the bank, on a roughly rectangular plan. The surviving two kilns have semi-circular brick arch openings and firebrick linings. A flight of restored, brick steps leads to their upper level at the north end.

Part of Scheduled Ancient Monument Mm 200.

Included as a rare example of calcining kilns.

Group value with other listed items at Blaenavon Ironworks.

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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