- P4/2/6.
- File
- 1880-1893.
Part of Monmouthshire and South Wales Coal Owners Association Records,
Letters, papers and reports relating to disputes at the Court Herbert Colliery and other Dynevor Collieries; Tylorstown; The Great Western Colliery, Hopkinstown; Aberaman; Morfa; and particularly the Plymouth Collieries. Mainly 1880, 1886, and 1889-1893.