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Welsh Slate Company

Purchased Samuel Holland's original lease in 1825 and expanded quarrying at Rhiwbryfdir into what became the Lower Quarry, one of the three operations later forced into a single combined business, Oakeley Quarry, after the catastrophic rockfalls of 1882-83.

Mines operated

MineRegionYears
Oakeley Quarry Gwynedd 1825–1883
Palmerston Quarry Gwynedd 1825–1883

Record created: 22 August 2026

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