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Home / Operators / Amalgamated Slate Association

Amalgamated Slate Association

Operated the quarry from 1918 to 1931.

Mines operated

Mine	Region	Years
Moel Tryfan Quarry	Gwynedd	1918–1931

Record created: 29 August 2026 · Last researched: 29 August 2026

Abandoned mines can be dangerous: unstable ground, old shafts, flooding and bad air are common even where a site looks safe. This is a historical reference, not an access or exploration guide.

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