Adds minimalist 1x1 loaders and stacking beltboxes for 5x belt compression for ores, plates and some intermediate products
Mods introducing new content into the game.
Augmented or new ways of transporting materials - belts, inserters, pipes!
Uranium won't stack, says it can't be smelted. Replicated in vanilla + stackers/loaders only
https://i.imgur.com/rpqNtme.jpg
Make sure that you have unlocked the recipe by the corresponding research. I think it was the blue beltboxes.