- P3/7/1.
- Ffeil
- 1880-1884.
Rhan oMonmouthshire and South Wales Coal Owners Association Records,
Cuttings from the Western Mail and South Wales Daily News, relating to the explosions at Penygraig colliery on December 10 1880 and Penygraig Naval Steam Coal Colliery, January 27 1884. The cuttings include witness reports and inquests reports.