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Sank Cae Duke Colliery at Upper Loughor in 1889 and 1893 and worked it into the 1920s, re-formed as the Loughor Colliery Co. (1910) Ltd.
| Mine | Region | Years |
|---|---|---|
| Cae Duke Colliery | Swansea | 1889–? |
Record created: 10 October 2026 · Last researched: 10 October 2026
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