D. P. and D. G. Thomas
David Prosser Thomas and his son Godfrey, who acquired Pwllgwaun Colliery in 1917 and managed it until it closed in 1948, latterly under licence from the National Coal Board.
Mines operated
| Mine | Region | Years |
|---|---|---|
| Pwllgwaun Colliery | Rhondda Cynon Taf | 1917–1948 |
Record created: 20 September 2026 · Last researched: 20 September 2026