dantheclamman@lemmy.worldM to Wikipedia@lemmy.worldEnglish · 23 days agoTrack ballast (crushed stone used underneath train tracks, surprisingly important and technical)en.wikipedia.orgexternal-linkmessage-square0fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-linkTrack ballast (crushed stone used underneath train tracks, surprisingly important and technical)en.wikipedia.orgdantheclamman@lemmy.worldM to Wikipedia@lemmy.worldEnglish · 23 days agomessage-square0fedilink