I agree. I think the evidence is against micronukes. The amount of disintegration suggests such a force, but the radiation is low, and the seismic readings are too low.
So, what can generate the amount of energy needed, and direct the energy as required, and pulverize the building from the top down as we observe?
1: The buiding were hit by an aircraft with fully loaded fueltanks at max velocity, causing sever structural damage.
2: The following massive fires made the structural damage worse by weaking the remaing support structures by the way of heat.
3: Caused by this weaking, the support structure suporting the largely undamaged part of the building above the point of impact, failed causing the mentioned upper part of the building to ram into the lower part of the building.
4: Due to the fact that the building were not designed for that sort of event, the impact of the upper part of the building caused a global, progressive collapse, which during and after the collapse and the subsequent collision with a little something called Mother Earth, shattered the decks aka as floors of the building, all made from reinforced concrete.
5: A dust cloud, consisting mainly of large amounts of drywall and a certain amount of concrete, allthough not the amount BS1234 claims, formed and were forced into the well known mushroom cloud, which doesn't only occur on nuclear explosions but also on other explosions, due to AIRPRESSURE!.
6: The airpressure, which in normal explosions comes from the shockwave of the explosion itself, were caused by the massive collapse of the buildings which came down very fast, allthough NOT at freefall speed.