you might also find it interesting to read about the US air force's experiments with nuclear reactor powered bases dug out of the ice sheet in northern greenlan

you might also find it interesting to read about the US air force's experiments with nuclear reactor powered bases dug out of the ice sheet in northern greenland (to service radar stations defending against missiles over the arctic from the soviet union). iirc the ruins are still out there somewhere I believe it was called "Project Iceworm" There is a really nice explanation out there somewhere I read about all the construction techniques they learned and what they very much learned not to do