I perhaps foolishly waited before starting a colony until I finished terraforming Mars. After much waiting, I was quite enthused to get things going there. So I moved a bunch of construction factories and mines over to Mars, and they just sat there in the civilian economy tab but NOT showing up in the planet summary. The population showed as being for all intents unemployed. What was I doing wrong?
What I did do finally was to move a large contingent of combat engineers to the planet and apparently, they have no problems assisting the Martians with building whatever is in their construction queue, so we are now building some native industry that they will then be able to bootstrap with. Still, it would be nice if I could jump-start them with some shipped factories and mines.