MineArchiveLlwyn-on Colliery Company
The company that began the successful sinking at Cefn Coed in 1921 after three earlier attempts had failed, and spent seven years getting through the Blue Pennant sandstone before being bought out by the Amalgamated Anthracite combine.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Cefn Coed Colliery | Neath Port Talbot | 1921–1928 |
Record created: 24 August 2026 · Last researched: 24 August 2026