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Owners of Clynmill Colliery at Merthyr in 1882-83, who introduced haulage machines and sank the Jacky pit to the Lower Four Feet.
| Mine | Region | Years |
|---|---|---|
| Clynmill Colliery | Merthyr Tydfil | 1882–1883 |
Record created: 6 October 2026 · Last researched: 6 October 2026
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