| Technical drawing numbers | |
| S3180/1 | Record of amendments |
| S3180/2 | Locking sketch |
| S3180/3 | Mechanical locking table |
| S3180/4 | Detection table |
| S3180/5 | Electrical control table |
| S3180/6 | Dog chart |
| S3180/7 | Lever leads |
| S3180/12 | Signal box diagram |
| ‹‹UP Click below to move to adjacent box DOWN›› | ||
| Porthywaen | —— This box —— | (Tanat Valley) |
No SRS diagram is available.
This page last updated on 12th October 2010.