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Wincilate Ltd

The company of the brothers Gwilym and Dewi Lloyd, which took over Aberllefenni quarry in 1956, mechanised it and worked it until slate extraction ended in 2003; its mill at Aberllefenni continues to process slate brought in from elsewhere.

Mines operated

MineRegionYears
Aberllefenni Slate Quarry Gwynedd 1956–2003

Record created: 24 September 2026 · Last researched: 24 September 2026

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