Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Amalgamated Anthracite Collieries Ltd., 2 canlyniadau
- Rhymney Iron Company., 1 canlyniadau
- Powell Duffryn Steam Coal Company., 1 canlyniadau
- Powell Duffryn Associated Collieries Ltd., 1 canlyniadau
- Gueret, Llewellyn and Merrett Limited., 1 canlyniadau
- United National Collieries Ltd., 1 canlyniadau
- Pob un
- Western Colliery (Nant-y-moel, Wales), 3 canlyniadau
- Wernos Colliery., 1 canlyniadau
- Rhos Colliery., 1 canlyniadau
- Pentremawr Colliery (Pontyberem, Wales), 1 canlyniadau
- Deep Navigation Colliery (Wales)., 1 canlyniadau
- Dowlais Colliery (Wales)., 1 canlyniadau
- Cwmaman Colliery (Aberdare, Wales)., 1 canlyniadau
- Rhymney Colliery (Wales)., 1 canlyniadau
- Nixon's Navigation Colliery (Wales)., 1 canlyniadau
- Cymmer Colliery (Wales)., 1 canlyniadau