Nuclear detonations are very effective earth movers, perhaps capable tools in an Megascale structure project. See project plowshare. I'm not sure if the energy

Nuclear detonations are very effective earth movers, perhaps capable tools in an Megascale structure project. See project plowshare. I'm not sure if the energy to make a weapon (enrichment primarily) is less than using conventional diggers and haulers. That is, are nuclear detonations efficient relative to other earth moving methods? Almost certainly. https://en.wikipedia.org/wiki/Project_Plowshare https://en.wikipedia.org/wiki/Project_Plowshare