I wonder where they came up with the term "squibs". Normally, this is a special-effects term for a sub-powered explosion designed to look good but be relatively harmless.
I can assure you that the sort of charge needed to cut steel beams and shatter reinforced concrete is not a "squib".
As I mentioned much earlier in one of the other threads, our university imploded a 9-story dormitory building a few years ago. This effort required about three months of prep work. A large crew with jackhammers, drills, steel-cutting power saws, and other noisy tools cut, dug out, drilled through, and otherwise weakened the main support structures in the building before ever a charge was laid.
The actual placement of charges was equally involved, what with dozens of explosive charges wired to a precisely-timed demolition "block" or ignition device.
All this took place after the place was virtually stripped of everything removable.