Quote Originally Posted by The Glyphstone View Post
How does a tall/mega-tall empire get enough minerals or alloys to actually build anything? Energy and Food can be had in phenomenal quantities from Ringworlds, but the only way to get Minerals is colonies or mining stations.
Buy it. You shoudl be swimming in energy, so just buy it off the market using monthly trades, or in chunks when your reserves get low. I spent the majority of my game on negative mineral income and it didn't really matter. (And for alloys, just buy the minerals in as required to keep however many factories you have running.)