Comment Comment by throw0101b > To prevent this, a big part of railway maintenance involves digging out all the stones, washing them to get rid of sand and soil, and putting them back.This is called "ballast cleaning" if anyone wants to do a search:* https://www.youtube.com/watch?v=zNFUgTJR6jw* https://en.wikipedia.org/wiki/Ballast_cleaner parent throw0101b 3 years ago
This is called "ballast cleaning" if anyone wants to do a search:
* https://www.youtube.com/watch?v=zNFUgTJR6jw
* https://en.wikipedia.org/wiki/Ballast_cleaner