MineArchiveRhymney Iron Company
The ironworks company of Rhymney in Monmouthshire, which like the other South Wales ironmasters developed collieries to feed and supply its works. It sank Darran Colliery near Deri in 1868.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Cefn Brithdir Colliery | Caerphilly | 1873–? |
| Darran Colliery | Caerphilly | 1868–1919 |
| Gilfach Colliery | Caerphilly | 1887–? |
| Groesfaen Colliery | Caerphilly | 1902–1925 |
| Mardy Colliery | Caerphilly | 1881–1909 |
| New Duffryn Colliery | Caerphilly | 1867–? |
| Rhymney Merthyr Colliery | Caerphilly | 1889–? |
Record created: 3 September 2026 · Last researched: 3 September 2026