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Ystalyfera Iron Company

The ironworks company at Ystalyfera in the upper Swansea Valley, which sank the Gilwen drift in 1860 and in 1881 worked four collieries including Gwaun Clawdd Level, Gilwen, the Feeder Drift and the Cyfyng Red Vein.

Mines operated

MineRegionYears
Gilwen Colliery Neath Port Talbot 1860–1882
Ystalyfera Colliery Neath Port Talbot 1869–1912

Record created: 16 September 2026 · Last researched: 16 September 2026

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