MineArchiveConglog Slate and Slab Company Ltd
Formed in 1873 with £40,000 of capital to work Conglog quarry; succeeded in the 1880s by a reconstituted New Conglog Slate and Slab Company Ltd.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Conglog Quarry | Gwynedd | 1873–1880 |
Record created: 30 August 2026 · Last researched: 30 August 2026