If the towers were demoed, how the explosives were set up?, page 8

OK, let’s review shall we?

If there were explosives in the building, then how did they get there? So far the following theories have been presented:

They were installed when the buildings were built. See my post above for my take on this theory.

They explosives were planted during the so called “power-down.” This theory has numerous holes. The first is the whole power down scenario itself.

Secondly this theory runs smack into the reality of how large buildings and complexes like the WTC are managed, maintained and run. This theory runs up against the fact that these buildings were occupied and operated 24/7. The maintenance engineers in particular are active at night and on weekends. No construction project, no matter how big or small operates in a vacuum in a building like that.

Some have put forth the idea that because a certain security company was in place at the building, that this is how the explosives were brought into the building. Unfortunately, security is not responsible for building maintenance and construction activities. Coordinating construction schedules around tenants is the job of the building manager. In a building of that size, and with many tenants in the financial sector, it is a difficult task, at best to get into those spaces to change a light bulb, let alone anything else.

Furthermore, the issue of building trade unions has to be dealt with. Unions are zealous about guarding their turf. In a building that size, there are contractors in there continuously. The union B.A.s and reps, always know exactly what contractors are doing what. THe idea that a bunch of workers were running around without anyone noticing or paying attention to what they are doing just doesn't fly.

The practicality of installing explosives is always overlooked in these theories.

Cutting charges on steel have to be installed directly on the steel to be effective. The WTC columns, either the core columns or the perimeter columns were not directly accessible. They were behind drywall enclosures covered with fireproofing. The perimeter columns were located in built out and occupied spaces. The core areas, well, if you truly understand the function of a core area, you would appreciate just how difficult it is to access theses columns. Elevator shafts, pipe shafts, duct shafts are not easy to enter and work in. The fireproofing in these areas contained asbestos, and as such, the maintenance and engineering staff would have been hypersensitive to any activities that could potentially disturb this material.
The theory that the explosives were planted over a longer period of time runs into the same problems as A) and B), above.
Suitcase nukes or "antimatter" explosions are for comic books.