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Rhosydd Slate Company

Formed the site as a limited company in 1856 and developed Rhosydd into one of the largest underground slate workings outside Blaenau Ffestiniog, before voluntary liquidation in 1873.

Mines operated

MineRegionYears
Rhosydd Quarry Gwynedd 1853–1873

Record created: 23 August 2026 · Last researched: 23 August 2026

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