Drop 500,000 tons of relatively weak stuff on the ground and, yes, much of it will be pulverized into fine dust.
Do yourself a favor and watch the video of the building materials turning to dust as they fall. IF so much mass hit the parking decks of the buildings, the crushing would have destroyed the parking layers and ruptured the bathtub so the Hudson River would rush into the tunnels under Manhattan. Watch the video evidence and open your mind to what is happening right before your eyes! The establishment explanation ios a great lie not supported by the visual evidence. Whjy would ‘they’ lie so forcefully right from the beginning even before the forensic work began, while the event was still unfolding live on TV?