MineArchiveMerionethshire Slate Company
Worked Gaewern and the neighbouring Braich Goch together under an 1787 mineral lease from John Edwards, taken by David Williams.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Gaewern Quarry | Gwynedd | 1787–? |
Record created: 30 August 2026 · Last researched: 30 August 2026