MineArchiveG. Williams
Opened Hir Fynydd Colliery above Seven Sisters in 1983 and worked it until 1992.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Hir Fynydd Colliery | Neath Port Talbot | 1983–1992 |
Record created: 10 October 2026 · Last researched: 10 October 2026
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