Almost certainly not.
Consider conventional building demolition where a contractor is hired to remove an obsolete building. They strip out all the accessible copper & other scrap metal & seell it to recyclers. Then they shred or implode the rest & haul it all off to a landfill.
Q: Do they charge for their services, or make enough off the recycling that they’ll take out the building for free?
A: They charge a buttload. The recycling generates a few percent on top, tops.
Now consider this: Which is richer “ore?”. A single intact building, or a largely destroyed city block deeply intermingled with mud (tsunami) and biohazards (eathquake or tsunami). Not to mention wrecked cars with flammable & noxious chemicals. Clearly there’s a lot more dross in the wrecked block. And it gets worse in a village-scale disaster since you’ve got more area & less valuables per square foot / meter / mile.
Now consider that it’s generally safe for workers to work inside a building being demolished, pulling out copper & steel in an organized fashion. Contrast that with trying to work inside a partially collapsed structure of uncertain safety, or even just a heap of rubble. Teasing out the good stuff won’t be easy. Not easy = not cheap.
Now consider the public reaction to using bulldozers to move piles of rubble which contain an unknown but non-zero number of human bodies. The inevitable footage of some grannie’s torso being smeared across a tractor tread will not endear the company to the public.
Now how much would you charge to do that cleanup?