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Melin Mynach, Gorseinon is a post-medieval and modern mill, protected as a scheduled monument by Cadw under reference GM501. The site lies on South Wales Upper Coal Measures bedrock, formed during the Westphalian period and composed of alternating layers of mudstone, siltstone and sandstone interspersed with coal seams, ironstone and ferricrete. This geology shaped the industrial character of the Gorseinon area during Wales's mining era.
The mill exemplifies the industrial heritage of the South Wales coalfield, where water-powered and later steam-driven mills processed local materials and served the needs of mining communities. The ferricrete deposits beneath the site reflect the oxidised ironstone bands common throughout the Upper Coal Measures, which supported both coal extraction and iron production in the region.
As a scheduled monument, Melin Mynach preserves evidence of post-medieval milling practices and the transition to modern industrial processes that characterised this landscape. The monument contributes to understanding how communities in the South Wales coalfield harnessed local geological resources and water power to sustain manufacturing industries alongside mining.
Melin Mynach, Gorseinon is a scheduled monument protected by Cadw under reference GM501. View the official record →
Melin Mynach, Gorseinon is a post-medieval and modern mill, protected as a scheduled monument by Cadw under reference GM501.
Melin Mynach, Gorseinon 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.
Melin Mynach, Gorseinon 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 GM501.
Several scheduled monuments lie within 10 km, including Clyne Wood Colliery Steam Winding Machine (7.1 km), Ynys Pit & Leat (7.3 km), Clyne Valley Shaft Mounds (7.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Melin Mynach, Gorseinon'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.
Melin Mynach, Gorseinon stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.