MineArchive
Menu

Ystradgynlais and Swansea Colliery Company Limited

Opened Ystradgynlais Colliery and the first Diamond drift in the mid-1870s; after its collieries flooded in 1893 it was insolvent and was wound up under a Chancery supervision order.

Mines operated

MineRegionYears
Ystradgynlais Colliery Powys 1874–1893

Record created: 11 October 2026 · Last researched: 11 October 2026

Accessibility options

Saved in this browser and applied on every page. Colour is never the only cue on MineArchive; if links are hard to pick out, underline them or raise the contrast. For larger text, use your browser's zoom.

Contrast
Link visibility
Motion
Reading width