I downloaded your mod 3 days ago and today I got to finally use the crusher.
After unlocking i,t the crusher showed me the "4 ores to 4 dust" recipes but when I researched "Base ore processing" the machine tells me there are no Recipes available.
Did a reload of the save file and a restart of the game as well but the crusher still told me there are no recipes available.

I did a small check in Sandbox mode and there the crusher had the "coal dust". "Advanced crushing" and "clump processing" when I unlocked all tech.

That's why recipes get updated with each tech you research.
When you update the recipe with the next tier the old ones get disabled so you don't have your inventory covered with ore recipes (especially when you play with other mods such as Bz).
This problem at the early stages of the game (where 4 ores are converted into dust) is known problem and I'm currently trying to understand what causes it.
Despite this the other recipes work fine so far, so if you research advanced crushing it all should be good.
_77Playmaker

That breaks the early game though, especially if you're not running any other mods. You're unable to use the early game recipes until you research the advanced ones, skipping a whole step (and a whole lot of progression). I assume you intend to fix this?

Can confirm that this breaks every step of the process. I just got to Enrichment Chambers, and the basic recipe is missing. I need to research Advanced Enrichment to get the second recipe at all.

Manually reloading recipes using this mod fixed it for me
https://mods.factorio.com/mod/Recipes-Reload

Manually reloading recipes using this mod fixed it for me
https://mods.factorio.com/mod/Recipes-Reload

Thanks for this tip! Useful workaround until this one is fixed.

(Sorry for the late reply, busy with university as always...) Interesting solution I must say.
Maybe adding an optional dependence while I don't fix this thing could be helpful to my pour coding knowledge about events :P...
Thank you!

Optional dependence added.
Give to Caesar what is of Caesar.