MineArchiveD. R. Llewellyn's Ynisarwed Collieries Company Limited
Bought Ynysarwed Colliery in 1918 and ran it through the 1947 nationalisation of the coal industry and on to its 1955 closure.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Glyn Merthyr Colliery | Neath Port Talbot | 1913–? |
| Ynysarwed Colliery | Neath Port Talbot | 1918–1947 |
Record created: 2 September 2026 · Last researched: 2 September 2026