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The company of Pontardawe that owned Gelli Nedd Colliery from about 1896 until at least 1911.
| Mine | Region | Years |
|---|---|---|
| Gelli Nedd Colliery | Neath Port Talbot | 1896–1911 |
Record created: 9 October 2026 · Last researched: 9 October 2026
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