MineArchiveTirdonkin Collieries Ltd
Swansea company that owned Tirdonkin Colliery at Llangyfelach in 1913-21 (Tirdonkin Colliery Co. Ltd from 1903), outside the Monmouthshire and South Wales Coal Owners' Association.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Cefngyfelach Colliery | Swansea | 1903–1910 |
| Tirdonkin Colliery | Swansea | 1903–1921 |
Record created: 10 October 2026 · Last researched: 10 October 2026