Description
Ballast, the material on which the track system rests, e.g. M1 and M2 are different fractions/sizes of macadam.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Lastkajen.se - information | Unknown | Open resource | |
| Järnvägsdata Ballast - nedladdning i Lastkajen | Unknown | Open resource |