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Company that worked the Cwmtillery Red Ash levels in the Tillery valley from 1889 to 1909.
| Mine | Region | Years |
|---|---|---|
| Cwmtillery Red Ash Colliery | Blaenau Gwent | 1889–1909 |
Record created: 10 October 2026 · Last researched: 10 October 2026
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