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Calcining Kilns

A Grade II Listed Building in Blaenavon, Torfaen

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Latitude: 51.7773 / 51°46'38"N

Longitude: -3.0891 / 3°5'20"W

OS Eastings: 324958

OS Northings: 209301

OS Grid: SO249093

Mapcode National: GBR F2.ZBD6

Mapcode Global: VH79C.DLSC

Entry Name: Calcining Kilns

Listing Date: 9 February 1995

Last Amended: 9 February 1995

Grade: II

Source: Cadw

Source ID: 15295

Building Class: Industrial

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

County: Torfaen

Community: Blaenavon (Blaenafon)

Community: Blaenavon

Locality: Blaenavon Ironworks

Built-Up Area: Blaenavon

Traditional County: Monmouthshire

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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.

Reasons for Listing

Part of Scheduled Ancient Monument Mm 200.

Included as a rare example of calcining kilns.

Group value with other listed items at Blaenavon Ironworks.

Other nearby listed buildings

  • II Chain Store
    Situated at the north-east corner of the site, above the track leading up to the balance tower.
  • I Blast Furnaces
    Three extant furnaces and the remains of others, stand in a row on the north-west side of the furnac
  • I Balance Tower
    Situated at the northern end of the Blaenavon Ironworks site and dominating the complex.
  • I Cast House and Foundry
    Situated on the north-western side of the site.
  • II Storage Shed and attached Chimney
    Situated to the south of the cast houses and adjoining the site of the western-most one.
  • II Stack Square
    Situated to the east side of the site.
  • II Pay Office
    Situated to the south-west of Stack Square and built against the curtain wall for the site.
  • II Gilchrist Memorial
    Situated in the Blaenavon Ironworks Museum car park at the north end of Blaenavon town and to the so

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