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Cwm Heisian West Lead and Gold Mine is a post-medieval and modern industrial site located in Wales. The mine exploited deposits of lead and gold occurring within the Upper Cambrian bedrock beneath the site, specifically within the Tremadoc formation of Tremadocian age. The underlying geology comprises mudstone, siltstone and sandstone, the common host rocks for metalliferous veins across this region.
The mill structures at Cwm Heisian West represent the processing infrastructure essential to nineteenth and twentieth-century mining operations. Such facilities would have concentrated and refined ore extracted from the surrounding workings, using the water resources and topography of the Welsh landscape to power mechanical machinery for crushing and separation of valuable minerals from waste rock.
The site is protected as a monument of national significance by Cadw, the Welsh heritage monuments authority, under reference ME204. This designation recognises the importance of Cwm Heisian West as evidence of Wales's substantial lead and gold mining industry, which shaped the economic development and industrial heritage of the region. The survival of mill buildings and associated mining infrastructure provides valuable physical testimony to these historic extraction and processing activities.
Cwm Heisian West Lead and Gold Mine is a scheduled monument protected by Cadw under reference ME204. View the official record →
Cwm Heisian West Lead and Gold Mine is a post-medieval and modern industrial site located in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference ME204.
Cwm Heisian West Lead and Gold Mine dates from the post medieval/modern period, and is classified as a mill. It is one of over 32,000 scheduled monuments protected across the UK.
Cwm Heisian West Lead and Gold Mine is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is ME204.
Several scheduled monuments lie within 10 km, including Glasdir Copper and Gold Mine Mill (5.4 km), Tyddyn Bach Round Barrow (6 km), Cefn Coch Cairn and Cist (6.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cwm Heisian West Lead and Gold Mine's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Cwm Heisian West Lead and Gold Mine stands on Upper Cambrian, Including Tremadoc, bedrock that formed in the Tremadocian. The rock here is mudstone, siltstone and sandstone.