I went down this rabbit hole a while back. It doesn't make any sense, it's not like you "microdose" nuclear explosions. The main theory is that nuclear explosion vaporized the insides of the building and left a a radioactive hole (hence the "dust" cited in the link here) - like the actual nuke was subterranean. Thing is, this is easily debunked as all the windows would have blown out from the pressure wave of that.

The buildings were demo'd 100% but the nuke theory is frankly farcical.

Edit: c5 is making a convincing case for an entirely different type of thing than I've looked into before. See comments elsewhere thru thread.

I went down this rabbit hole a while back. It doesn't make any sense, it's not like you "microdose" nuclear explosions. The main theory is that nuclear explosion vaporized the insides of the building and left a a radioactive hole (hence the "dust" cited in the link here) - like the actual nuke was subterranean. Thing is, this is easily debunked as all the windows would have blown out from the pressure wave of that.

The buildings were demo'd 100% but the nuke theory is frankly farcical.