MineArchiveNational Coal Board
Developed Cynheidre after the Second World War as one of two West Wales 'super pits', alongside Abernant, meant to keep deep anthracite mining economically viable.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Cynheidre Colliery | Carmarthenshire | 1954–1989 |
Record created: 24 August 2026 · Last researched: 24 August 2026