A shameless edit of https://mods.factorio.com/mod/OreRecipes by DellAquila

The idea is to be able to craft, with 20 red packs, 20 green packs, steam and ~100 of plate of target resource, an entity that'll spawn ore on the ground (500 in a single square). It somehow doubles your input but it's labor intensive.

I edited this because I felt like having 200 assembler mk2 for SpaceBlock was too much so here is a solution midgame.
Also, tech has been moved earlier to be just after logistic-2, so way before you being able to have module and abuse the original SpaceBlock production chain.