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Mr H. Head of Dowlais, recorded as owner of Cwmdows Colliery, Newbridge, when work probably began there in 1804 or 1805.
| Mine | Region | Years |
|---|---|---|
| Cwmdows Colliery | Caerphilly | 1804–? |
Record created: 9 October 2026 · Last researched: 9 October 2026
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