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Thomas Harcourt Powell opened Hook Colliery in Pembrokeshire around 1849/50 and, with family successors, operated the anthracite pit intermittently through the second half of the 19th century.
| Mine | Region | Years |
|---|---|---|
| Hook Colliery | Pembrokeshire | 1850–1870 |
Record created: 20 August 2026
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