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Incorporated in 1911 to take over Porthdafen Colliery, Dafen, from William Watkeys Ltd, and worked it until its abandonment in 1924.
| Mine | Region | Years |
|---|---|---|
| Porthdafen Colliery | Carmarthenshire | 1911–1924 |
Record created: 2 October 2026 · Last researched: 2 October 2026
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