911 Fairy Tale from Hell Part 7
http://www.youtube.com/watch?v=eHZEGutg1FM&NR

Description:

Controlled Demolition of WTC7 . Watch Larry Silverstein, the owner of WTC7, comment that Building Seven would have to be pulled "to prevent any further loss of life", and so they "pulled it". Pulling a structure is a well-understood industry term for a controlled demolition. This "pulled" 47-story building then collapsed exactly as WTC1 and WTC2 had. It takes weeks of careful planning to prepare a large structure like WTC7 for demolition, and they had 4 hours under war-zone like working conditions.

Question:

WTC7 was "pulled", so when did they actually install and wire the explosives?