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