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A Tonyrefail firm that owned the Rhiwgarn level from 1906 to 1910, employing up to about thirty men in the No. 3 Rhondda seam.
| Mine | Region | Years |
|---|---|---|
| Rhiwgarn Colliery | Rhondda Cynon Taf | 1906–1910 |
Record created: 16 October 2026 · Last researched: 16 October 2026
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