Many people died in a frantic attempt to rescue vital assets, as many or more than were lost
Mountain collapsed, buried in permanent tomb
Not as a result of tests, only amplified what was already happening.
https://www.youtube.com/watch?v=HRRLZZrpzWc
Music to my ears
Not only that, the NK tunnels I’ve seen are solid chert - flint - ain’t no excavating outta THAT.