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Operated Merthyr Dare Colliery alongside the neighbouring Cwmdare Colliery in the late 1860s, before selling on around 1870.
| Mine | Region | Years |
|---|---|---|
| Merthyr Dare Colliery | Rhondda Cynon Taf | ?–1870 |
Record created: 1 September 2026 · Last researched: 1 September 2026
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