MineArchiveMerthyr (South Wales) Ltd
Operated Ffos-y-Fran from 2007 to its 2023 closure, formerly trading as Miller Argent and owned by Gwent Investments Limited.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Ffos-y-Fran | Merthyr Tydfil | 2007–2023 |
Record created: 25 August 2026 · Last researched: 25 August 2026