Thanks for the feedback! You need to feed chemical elements into an assembler. Click it to open the UI. The rocket only takes advanced items like fuel. I guess it needs some sort of a tutorial.
Ahhhh, ok. I didn’t realize you need to click on them. :O Now it makes sense, this is so much fun :D.
But there seems to be a bug that the mines only produce when they are built to the right, the other way around they do nothing.