whats the math on mining bases?

[Arkcon]

Now you realize, you don't pay any maintenance while the space station is being built. Also, you get the same depletion level each turn no matter how few mining components there are (when playing infinte resources). So you should put them all on and just build.

I recognize thats slow for battle station and starbase building. But in that case, you'll still want it as fast as you can, so just go for the 50% retrofit rule.