By Original Class
English Electric 17/3 class, no. D6979, approaches the Nelson Road Bridge at Ystrad Mynach with a coal train down the valley towards Aber Junction on April 21st, 1967
© Robert Masterman
© Robert Masterman
British Built Classifications
| 1000 Class | 90 Class | D17/1 Class | DE3 Class | 17/3 Class | 1851 Class |
Australian Built Classifications
| K class | A class | 1300 class | R class | D34 class | RA class |
| 1320 class | Z class | 2350 class | ZA class | 2370 class |