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Royal Bangor Slate Company

The company that reopened Bryn Hafod-y-Wern slate quarry near Llanllechid in 1845, built its mills and worked it until the water supply was cut off in 1884.

Mines operated

MineRegionYears
Bryn Hafod-y-Wern Quarry Gwynedd 1845–1884

Record created: 20 October 2026 · Last researched: 20 October 2026

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