Except that now you’re looking at eight to ten maneuvers to get your tech online, each phase.
If you’re gonna do factions, you should just make a Surface Reclamation Guild faction or something.
It really sounds like you should probably just say “The world’s high-index, but until the figures of note (from both sides, I’d imagine) can set up a reclamation process, no one gets anything above low-index.”  You don’t need to pre-plan exactly what that entails, but the scope of the action should be well-understood (is it a phase goal, a maneuver goal for one side or the other, or is it just a building scene or two?)
Investigative Logic is not particularly appropriate for this task.  If the information is deeply buried, some kind of history or archaeology is indicated.  If it’s two generations old, though, bureaucracy or research might get it.  Investigative Logic is more about crime scenes and motives, so unless the point of leverage is figuring out exactly who triggered the catastrophe and how, that’s probably not the skill.
I’d also comment that the process you gave will consume two full building scenes (Ancient History, Investigative Logic, Back-Breaking Labor, Repair, Circles, Resources).  If that’s a process to recover one specific piece of tech, that’s excessive (in comparison, it’s perfectly possible to score even very heavyweight tech in one builder: Circles to find a fabricator, Fabrication, Resources, or maybe a linked test for resources, some other test as a quid-pro-quo to another player for resources help, and then resources).
If that’s across the board, do that once to set up extraction and then do maybe Repair as a linked test to Resources from then on, I’d drop Back-Breaking Labor.  Just use Circles, Resources, or Affiliations to get someone else to dig.  If you want to be nasty, require a Fusion Dynamics or Iron Artifice (was that the name?) or similar roll to allow tech dependent on those skills to be reclaimed.