Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Coal mines and mining -- Wales -- Monmouthshire, 1 canlyniadau
- Newport (Wales), 1 canlyniadau
- Strikes and lockouts -- Wales -- Monmouthshire, 1 canlyniadau
- Coal miners' strike, Great Britain, 1921, 1 canlyniadau
- Mutiny -- Wales -- Monmouthshire, 1 canlyniadau
- Abertillery (Wales), 1 canlyniadau