Comment: Speed difference: 15 seconds versus 6 seconds.

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In reply to comment: If by symmetrical you mean... (see in situ)

SteveMT's picture

Speed difference: 15 seconds versus 6 seconds.

19 stories versus 47 stories.

In addition, 4 stories was all that was left of two 110 story buildings. 4 stories was all that was left from this 19 story building. Something is very wrong that they are the same debris pile.