MineArchiveBrynhenllys Anthracite Colliery Company
The company that worked the Brynhenllys slants at Upper Cwmtwrch from 1925 until nationalisation, including the Waunlwyd slant near Cwmllynfell.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Brynhenllys Colliery | Powys | 1925–1947 |
Record created: 10 September 2026 · Last researched: 10 September 2026