New resources: Problem with improvements

[Amatheria]

After a while, I included new resources in the game, fully functional. At the moment, ruby, lead and granite.

But when I build a mine or a quarry, it only shows the basic one, without the stones/gems being spoiled. I've found that the IMP_Mine... assets has a list of available resources for mining. I copied and changed these files, and also added the assets, meshes and textures for the new resources, but it doesn't show ingame.

I think I'm missing something, some codes/lines, so I need someone to tell me which files are needed.

Thank you in advance.