Survey reports for Cwmcynnon Colliery,
- P6/1/22.
- Ffeil
- 1935-1937.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Samples 28. Analysis of the Nine Feet Seam; Fusion Point of Coal Ash report.
Survey reports for Cwmcynnon Colliery,
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Samples 28. Analysis of the Nine Feet Seam; Fusion Point of Coal Ash report.