Thank you!
It is a bit of a puzzle, but you designate areas to dig, make sure you have some dump areas too or your robots will get stuck holding garbage.
Then slowly build different buildings until you can make a farm and a radio tower to win.
Unfortunately the game doesn't tell you what resources you need for each building in this version. My next jam version makes it more clear:
https://keep-flying-games.itch.io/garbage-in-garbage-out-jam-edition (If you need the password: tiny)