[ This one's a bit odd sounding, I guess, but I can't really re-word it right now. ]
[ The idea here is that there's this odd creature that has been created to live off of raw materials found on the planet that is to be terra-formed... ]
[ Because the "mother" is stationary and enormous, she "births" and sends out smaller "offspring" bots that drill and retrieve from a-far fuel-rich minerals for further processing. ]
[ Or something to that effect. ]
Sci-Fi: GAS-SPEWING "MOTHER" TERRA-FORM BOT BIRTHS SPHEROID "OFFSPRING"