MineArchiveWatts, Ward & Co.
The company that took the colliery in 1872 and eventually merged into the London and South Wales Coal Company.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Black Vein Colliery | Caerphilly | 1872–? |
Record created: 9 September 2026 · Last researched: 9 September 2026