| 01/03/1864 | London and North Western Railway, South Wales
Extension from Brynmawr to Nantybwch. |
| 05/09/1871 | Rhymney and Nantybwch Joint Line (London and North Western Railway, South Wales and Rhymney Railway)
Joint line from Rhymney to Nantybwch opened. |
| 02/10/1871 | Rhymney and Nantybwch Joint Line (London and North Western Railway, South Wales and Rhymney Railway)
Joint line from Rhymney to Nantybwch opened to public traffic. The London and North Western Railway diverts all of its Cardiff bound traffic to the Rhymney Railway route. |
| / /1910 | London and North Western Railway, South Wales
Run-away coal train piles up after being diverted onto a dead-end siding by signalman on Ebbw Vale Branch. |
| / /1923 | London Midland and Scottish Railway
0-8-4 tanks by H.P.M. Beams introduced on the London and North Western Railway, South Wales. |
| 05/02/1951 | Beaufort Ironworks Tramway, London and North Western Railway, South Wales
Link closed to passengers. |
| 23/09/1953 | Rhymney Railway, London and North Western Railway, South Wales
Joint line from Rhymney to Rhymney Bridge closed. |
| 02/11/1959 | Beaufort Ironworks Tramway, London and North Western Railway, South Wales
Link closed completely. |
