Ancient Monuments

History on the Ground

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Coed Mawr Pool Lead Mine

A Scheduled Monument in Betws-y-Coed, Conwy

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Latitude: 53.1091 / 53°6'32"N

Longitude: -3.8225 / 3°49'20"W

OS Eastings: 278101

OS Northings: 358436

OS Grid: SH781584

Mapcode National: GBR 63.81Y9

Mapcode Global: WH663.831S

Entry Name: Coed Mawr Pool Lead Mine

Scheduled Date: 31 August 2001

Source: Cadw

Source ID: 3867

Cadw Legacy ID: CN332

Schedule Class: Industrial

Category: Lead mine

Period: Post Medieval/Modern

County: Conwy

Community: Betws-y-Coed

Traditional County: Caernarfonshire


The monument comprises the remains of dressing floors associated with lead production at the eastern end of Llyn Pencraig, where there were shafts and adits. There is a substantial wheelpit for winding at one of the shafts, with a well preserved bob pit nearby. The hand dressing floors extend over a large area characterised by masses of broken rock and the remains of walls and ore bins. A circular powder store stands on a rocky outcrop.

The mine may have begun as Coedmor, recorded as producing lead before 1697. The site was probably working in the 1750s and was prospering by the 1820s. There was substantial investment after 1851, but the final lessee company at the site was dissolved in 1930.

The monument is a diverse and complex multi-period landscape of hand dressing and ore production. The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of mining technology from a single period. Lead mines may be part of a larger cluster of industrial monuments and their importance can be 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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