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Colliery Ventilation Furnace at Pembrey is a post-medieval industrial chimney protecting the ventilation system of a coal mine in the South Wales coalfield. Built above the productive seams of the South Wales Upper Coal Measures Formation, which were laid down in the Westphalian period and comprise mudstone, siltstone, sandstone, coal, ironstone and ferricrete, the furnace forms part of the mine's essential infrastructure. Ventilation furnaces of this type drew fresh air through the mine workings by creating a strong updraft, expelling smoke and hot gases from a fire to pull air through the underground passages and prevent the accumulation of dangerous gases.
Located at Pembrey in Wales, this structure represents the industrial heritage of the region's extensive coal extraction. The furnace is protected as a scheduled monument by Cadw under reference CM267, recognising its significance as a surviving component of the coalfield's operational landscape. Such structures are characteristic of nineteenth and early twentieth-century coal mining practice in South Wales, and demonstrate the engineering solutions miners developed to maintain safe working conditions beneath the surface.
Colliery Ventilation Furnace at Pembrey is a scheduled monument protected by Cadw under reference CM267. View the official record →
Colliery Ventilation Furnace at Pembrey is a post-medieval industrial chimney protecting the ventilation system of a coal mine in the South Wales coalfield. It is designated a Scheduled Ancient Monument by Cadw under reference CM267.
Colliery Ventilation Furnace at Pembrey dates from the post medieval/modern period, and is classified as a chimney. It is one of over 32,000 scheduled monuments protected across the UK.
Colliery Ventilation Furnace at Pembrey 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 CM267.
Several scheduled monuments lie within 10 km, including The Bulwark, Llanmadoc Hill (8.8 km), Llanmadoc Hill, cairn on E end of (8.8 km), Bovehill Castle (8.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Colliery Ventilation Furnace at Pembrey'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.
Colliery Ventilation Furnace at Pembrey 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.