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Sank Windsor Colliery at Abertridwr from 1895 and operated it until Powell Duffryn Steam Coal Company took over in the early 1930s.
| Mine | Region | Years |
|---|---|---|
| Windsor Colliery | Caerphilly | 1895–1932 |
Record created: 2 September 2026 · Last researched: 2 September 2026
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