Birdwatch Note Rating
2024-04-23 08:09:17 UTC - HELPFUL
Rated by Participant: 613BC9BAE666C20ECE72AA8AE24FBF7D4285A960EBA3B186EC6E67826BE466C4
Participant Details
Original Note:
The highlighted ejecta on levels far below the collapsing levels is due to elevators with motors and cables destroyed, dropping to the base of shafts terminating on intermediate floors. The piston effect in these shafts created high-pressure jets of dust and debris: https://theconversation.com/how-the-terrifying-evacuations-from-the-twin-towers-on-9-11-helped-make-todays-skyscrapers-safer-167698
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