The first mineral I always have a shortage problem with is this one, and the only way to get more of it is with it it seems. My latest game for example has no easily habitable worlds in 40 explored systems, and while I have a flood of terraformers being built, towed around, and so on, in the intermediate it won't be enough. Are orbital habitats worthwhile in this situation? I'd have to put terraformer construction on hold to do so. Should I have moderated mine construction on the homeworld, and built some more automines instead? I've got 500 regular mines, and no where to put them now in the short term, though habitats could solve that.