Bulk train loader/unloader with buffer.
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
tried placing the rail loader horizontally and all the tracks in it were vertical. Screenshot: https://imgur.com/a/Stn814U
Yes, I am aware of this issue. Its noted in the information tab. Working on a fix but for now at least it works vertically.