Ancient Monuments

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Craig-y-Mwyn Lead Mine

A Scheduled Monument in Llanrhaeadr-ym-Mochnant, Powys

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Coordinates

Latitude: 52.8449 / 52°50'41"N

Longitude: -3.3743 / 3°22'27"W

OS Eastings: 307538

OS Northings: 328372

OS Grid: SJ075283

Mapcode National: GBR 6P.SW9B

Mapcode Global: WH78M.4RGD

Entry Name: Craig-y-Mwyn Lead Mine

Scheduled Date: 20 May 1998

Source: Cadw

Source ID: 1051

Cadw Legacy ID: MG249

Schedule Class: Industrial

Category: Lead mine

Period: Prehistoric

County: Powys

Community: Llanrhaeadr-ym-Mochnant

Traditional County: Montgomeryshire

Description

The monument consists of a mine, an excavation made in the earth for the purpose of digging out metallic ores, coal, or salt. Craig-y-Mwyn contains extensive remains of early lead mining and some of the best remaining examples in the country of hushing systems. Workings in the Great Opencast have not yet been dated, but may be ancient in origin. The site was worked until the nineteenth century, and datable features survive from the mid eighteenth century, when it was mined by the Powys Estate. The visible remains include hushing channels, watercourses, former ponds and reservoirs, spoil tips, a shaft dated to 1747, levels, and building platforms. The scheduled area includes the Great Opencast and tips immediately below it, the channels and reservoirs on the mountain top to the west. It is bounded by the 350m contour on the north-east, a field boundary on the south, and a stream on the south-west. On the west it is bounded by the 540m contour, and on the north by an incline from the lower level and a straight line to the north of the Opencast.

The monument is of national importance as an exceptional complex of early mining remains, including rare evidence of hushing and primitive opencast. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

Source: Cadw

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