Settings
Terminal output is suppressed while Reduce motion is on (Accessibility options, or your system setting).
Record pages print like a terminal. Speed changes apply from the next page.
Groeslon-based slate company that reopened Cymerau quarry after its First World War closure, at greatly reduced scale.
| Mine | Region | Years |
|---|---|---|
| Cymerau Quarry | Gwynedd | 1918–? |
Record created: 30 August 2026 · Last researched: 30 August 2026
MineArchive sets one cookie of its own to count returning readers and see which pages are used. It is not used for advertising and is not shared with anyone. Details
MineArchive