MineArchiveUnited National Steam Company
Owned National Colliery, Wattstown, before any coal was produced from the newly-sunk shafts.
Mines operated
| Mine | Region | Years |
|---|---|---|
| National Colliery | Rhondda Cynon Taf | 1880–1912 |
Record created: 27 August 2026 · Last researched: 27 August 2026