Cardiff and Ogmore Collieries Limited
Registered in January 1907 with 30,000 pounds of capital to take up mineral leases at Wern Tarw; it worked the first Werntarw drift until about 1913.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Werntarw Colliery | Bridgend | 1907–1913 |
Record created: 20 September 2026 · Last researched: 20 September 2026