We all work there. I inherited the post from my father, and him from his. I take care of the temperature of my section. I learned the Prayers and Sequences from my ancestors and I'm good at it.
When I was a kid I asked Grandma what the Factory does. "It makes parts to keep itself running" was her answer.
I'm training my son to take my post, he can read gauges now. He'll be ready in a few years. "We are blessed to have The Factory" I always say to him.
The little robot dug through the leaf litter. It was not looking for anything, it was just digging. A little while later it moved on, and repeated the exercise.
And so it continued, turning over the soil, bringing the rich loam to the surface. Doing that which the small mammals no longer could, providing new areas for plants to grow. Overhead, other smaller drones flitted from flower to flower, carefully distributing pollen.
Back inside the habitat dome, Angela watched their progress. In another 50 years or so the O3 and CO2 levels should allow for animal life on the surface again.