MineArchiveBritish Manganese Company
Formed in 1903 to work the Rhiw mine, next door to Benallt and on the same orebody. The two operations were separately owned but their workings eventually ran together.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Benallt Mine | Gwynedd | 1903–1939 |
Record created: 24 August 2026 · Last researched: 24 August 2026