MineArchiveMachen Colliery Company
Opened Rhos Llantwit Colliery near Caerphilly in 1863.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Rhos Llantwit Colliery | Caerphilly | 1863–1866 |
Record created: 18 October 2026 · Last researched: 18 October 2026
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