Folks, it is impossible for a building to collapse due to an small upper segment falling on the much larger lower portion. It would simply "bounce" off the lower portion. There is simply not enough energy to crush the rest of the building - maybe a much denser thing like solid concrete (or a black hole lol) could do it. Possibly if the building was sheared at a much lower level, say on the 20th floor, the upper part could conceivably crush the lower part but no way up on the 90th floor.
Can you explain how you know this? And given that, how does Verinage demolition work?