I will post a few choice bits I found that tackle the notion advanced by conspiracy theorists, namely:
2,000 lbs of RDX-grade linear-shaped charges (which could have been pre-positioned by just a few men) could cut the supports at key points so that gravity would bring the buildings straight down.
-Prof. Stephen E. Jones, Brigham Young University
Professor, meet a man who blows up buildings for a living:
Loizeaux goes on to say that the biggest commercially available charges can cut through steel that is three inches thick. The box columns at the base of the WTC towers were fourteen inches on a side. If big enough charges did exist, Loizeaux says, for each tower it could hypothetically take as long as two months for a team of up to 75 men with unfettered access to three floors to strip the fireproofing off the columns and then place and wire the charges.The explosives configuration manufacturing technology [to bring down those buildings] does not exist If someone were to attempt to make such charges, they would weigh thousands of pounds apiece. You would need forklifts to bring them into the building.
-Mark Loizeaux, Controlled Demolition, Inc.
Theres just no way to do it If you just put bulk explosives in file cabinets next to every column in the building, it wouldnt knock those columns down. It would blow the windows out. It would trash the [building] and probably blow out two floors above and a floor below but it wouldnt knock the building down.On to the really good stuff. It turns out yesterday, the folks over at Implosionworld.com (gotta love the name) have released a report on controlled demolition theories at the WTC.
-Mark Loizeaux, Controlled Demolition, Inc.
Their verdict the Controlled Demolition theory folks dont have the faintest idea what they are talking about.
Read all about it. (PDF) [Mirrored at xbehome.com]