MineArchiveYniscedwyn Iron Company
The Ystradgynlais ironmaking company that opened Yniscedwyn Colliery in 1872 to feed works on ground where iron had been made since before 1720.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Yniscedwyn Colliery | Powys | 1872–? |
Record created: 11 September 2026 · Last researched: 11 September 2026