MineArchiveNorth Wales Iron and Manganese Company
Formed in 1903 to develop the Benallt mine, alongside the British Manganese Company at the adjoining Rhiw. It reworked Benallt from 1904 on newly proved reserves and, when those ran thin around 1914, opened the Nant orebody above Porth Ysgo.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Benallt Mine | Gwynedd | 1903–1939 |
Record created: 24 August 2026 · Last researched: 24 August 2026