© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Air Furnace at British Ironworks is a post-medieval ironworks situated on the Coal Measures bedrock of South Wales, where ironstone, coal and ferricrete deposits provided essential raw materials for iron smelting. The site lies upon Moscovian-age strata of mudstone, siltstone and sandstone interspersed with coal and ironstone seams, geological circumstances that made this location strategically valuable for industrial exploitation. The furnace represents the region's intensive iron production during the early modern period, when South Wales became a major centre of metallurgical activity.
The air furnace technology employed here was fundamental to iron smelting operations of the era, using bellows-driven forced draught to achieve the high temperatures necessary for ore reduction. The local geology—particularly the readily accessible ironstone and coal measures—made the British Ironworks site especially productive, contributing to the broader industrial development that would transform South Wales into a global iron-producing powerhouse.
The monument is now protected by Cadw, the Welsh heritage body, under reference MM221, safeguarding this important record of industrial heritage and technological innovation.
Air Furnace at British Ironworks is a scheduled monument protected by Cadw under reference MM221. View the official record →
Air Furnace at British Ironworks is a post-medieval ironworks situated on the Coal Measures bedrock of South Wales, where ironstone, coal and ferricrete deposits provided essential raw materials for iron smelting. It is designated a Scheduled Ancient Monument by Cadw under reference MM221.
Air Furnace at British Ironworks dates from the post medieval/modern period, and is classified as a ironworks. It is one of over 32,000 scheduled monuments protected across the UK.
Air Furnace at British Ironworks 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 MM221.
Several scheduled monuments lie within 10 km, including British Colliery Pumping Engine House (0.1 km), Cwmbyrgwm Colliery (0.7 km), Abersychan Railway (2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Air Furnace at British Ironworks'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.
Air Furnace at British Ironworks stands on Pennine Middle Coal Measures Formation And South Wales Middle Coal Measures Formation (Undifferentiated), bedrock that formed in the Moscovian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.