Brent Blanchard, a demolitions expert with Protec, and contributor to ImplosionWorld.com, weighs in with his expert opinion:
We have never once heard the term 'pull it' being used to refer to the explosive demolition of a building, and neither has any blast team we've spoken with. The term is used in conventional demolition circles, to describe the specific activity of attaching long cables to a pre-weakened building and maneuvering heavy equipment (excavators, bulldozers etc) to 'pull' the frame of the structure over onto its side for further dismantlement. This author and our research team were on site when workers pulled over the six story remains of WTC6 in late fall 2001, however we can say with certainty that a similar operation would have been logistically impossible at Ground Zero on 9/11, physically impossible for a building the size of WTC7, and the structure did not collapse in that manner anyway.
In the weeks following 9/11, several Protec building inspectors and staff photographers, including this author, were contracted by demolition teams to document the deconstruction and debris removal processes at Ground Zero. These processes included the mechanical pull-down of the remains of the U.S. Customs Building (WTC 6) and various other activities occurring simultaneously throughout the site. http://tinyurl.com/z6zyc
From the Popular Mechanics book Debunking 9/11 Myths: Why Conspiracy Theories Can't Stand Up to the Facts:
Four demolition and engineering experts tell Popular Mechanics that pull it is not slang for controlled demolition. "I've never heard of it," says Jon Magnusson of Magnusson Klemencic Associates.
Ron Dokell, retired president of Olshan Demolishing Company, says the same thing. Mark Loizeaux of Controlled Demolition, Inc. adds that the only way he can imagine the term being used is in reference to a process where the legs of a structure are precut and attached to cables, and then large machines are used to literally pull the building to the ground.