1. Importance of NYC (vs. Pentagon and Shanksville)
1. Any thought of 9/11 evokes images of the Twin Towers (and Muslim terrorists)
2. Vast majority of deaths happened there; emotion-laden thoughts of first-responder deaths
3. Collapse of steel-frame high-rises due to fires was unprecedented
4. Widely photographed/videoed, offers best opportunity to apply scientific analysis
2. Official story
   see  FIGURE 1: WTC building locations
1. 19 Hijackers and planes flying into buildings
2. Gravity-driven collapses, due to airplane damage (WTC1&2) and fires (WTC1&2&7)
3. Almost no mention of WTC7 after 9/11
4. No mention of others (particularly WTC 4&6)
5. FEMA report: preliminary, recommended research that was never subsequently done
6. NIST reports: many fatal problems indicating fraud, refusal to publish data ("public safety")
3. WTC-1-2-7 common characteristics, point to explosives rather than fires
   see  FIGURE 6: AE911Truth Key Cards
1. Rapid straight-down into path of greatest resistance, not falling over toward most damage
   see  FIGURE 3: Debris field
2. Pulverization
1. Almost everything (even flooring) except structural steel & (WTC1&2) aluminum cladding
2. Energy sink – requires more energy than available from gravity
3. Huge rapidly expanding very-hot hot pyroclastic clouds (another energy sink)
4. Squibs – rapid debris ejections
   see  FIGURE 2: Squibs
1. Not "pressurized floor" window blow-outs – no instant interfloor route for pressure/debris
2. Well below destruction line
3. WTC1 corner squibs (impossible)
5. Heat
   see  FIGURE 3: Hot Spots
1. Dust contains: iron microspheres (not steel, gathered before cleanup began) iron's melting point 2800ºF, max air-rich office fires 1200º
2. Red-gray chips ubiquitous in dust
1. Aluminum and iron oxide on nanoscale
2. Flash at about 400ºC to create intense heat, so can't be fireproofing paint
3. Produce iron microspheres and white aluminum oxide smoke
4. Thermite incendiary: Al + iron oxide > HEAT + molten iron + Al oxide
5. Lawrence Livermore nanothermite article from October 2000
6. Structural steel frame – necessary evidence for what happened
1. Completely dismembered into truckable pieces
2. Smooth bends of I beams with no distortion (requires intense heat)
3. Almost all removed to landfills, shipped to China despite wholesale prices at lowest
4. Key differences between WTC1&2 and WTC7
1. WTC1&2 exploded: destruction starts at top, debris spread far outside footprint
2. WTC7 controlled demolition: destruction starts at bottom, debris localized in footprint
5. WTC7 -- standard controlled demolition
1. Background
   see  FIGURE 1: Structure
1. 47-story, core & perimeter columns, columns/girders/floor-beams
2. Secure: held many government agencies: CIA, FBI, SEC, NYC's EOC
3. Fell late in day (5:20pm) after several premature collapse assertions in news
4. Large explosions in early morning and just before collapse
5. Larry Silverstein's "pull" comment, not (as claimed) about removing firefighters
2. NIST Report – problems
1. Quick description of NIST explanation: fire > beam thermal expansion > push girder off column 79 > column collapses
   see  FIGURE 4: WTC7 Descent vs. NIST
2. "Progressive collapse" twisted-beer-can diagram bears no relation to videos
3. 2.5sec/8-floor freefall covered up by NIST, denied, then admitted but not acknowledged
4. Claim of heat-induced beam expansion found to be fraudulent
1. False and changing "clerical error" measurements
2. Omitted from model: shear studs lock beams to flooring (prevent expansion)
3. Omitted from model: girder support flanges at column (prevent girder falling)
4. Fire had gone out in alleged key area long before collapse
3. AE911Truth-sponsored complete technical re-analysis concludes fire couldn't have done it —
   preliminary report:  https://www.youtube.com/watch?v=RYV33LKDY8k  (9/6/17)
6. WTC1&2 -- exploded, not collapsed (non-standard demolition)
1. Background
   see  FIGURE 1: Structure
1. Core & perimeter columns, floor trusses connect core to perimeter
2. Structure designed to withstand 707 airliner, like poking pencil through a screen
3. Silverstein's contract signed a couple of months earlier on these money-losing asbestos traps, with terrorist insurance coverage
2. NIST explanation
1. Planes damaged the core and the fireproofing
2. Fires softened trusses, sagged, pulled in perimeter wall, wrecked strength
3. Pile driver: top section (WTC1 ~10 floors, WTC2 ~20 floors) crushed floors below
3. NIST Report – two major problems
1. Model failed to produce collapse until parameters were exaggerated beyond reality
2. Stopped analysis just before collapse initiation: no explanation of the actual "collapse"
4. NIST Report – inconsistencies with reality (these are only a few of many)
1. Massive explosions in lower part of building, even before plane impact
2. Alleged core damage -- no direct evidence (sent to China)
3. Alleged floor-truss sagging
1. Acknowledged that no steel temps above 600ºC, necessary for softening
2. Fireproof rating of 2 hours, fireproofing-damage tests done with a shotgun
3. Floor truss sagging vastly exaggerated, would have required massive external force
4. Alleged pile driver -- no block of floors appears riding the demolition wave
1. WTC1: no jolt, engineering calculations show descent stopping after 1-2 floor impacts
2. WTC2 tilted top stops tilting, vanishes in dust, not on ground afterwards
   see  FIGURE 5: WTC2 block tilts, tips, stops, disappears
5. Large pieces of non-spring structural steel thrown up to 200 yards at up to 100 mph
6. No large pile of pancaked corrugated floor pans left at bottom
7. People
1. Bone fragments on adjacent rooftops, not trapped in debris
2. 1200 people unaccounted for (DNA missing), as if vaporized
7. Implication — Muslim terrorists couldn't have done this > War on Terror based on fraud
1. Preparation required many weeks, with high-security access
2. Major elevator maintenance and a weekend-long power/security outage

 

Notes:

• The first pair of images indicate the relative positions and sizes of the seven WTC buildings.
• The Twin Towers and Building 7 were both based on a very heavy, solid set of core columns connected to peripheral columns by floor-supporting members.
• In the Twin Towers, the peripheral columns consisted of alternating 30-foot 3-piece powerful steel units that created a mesh like a screen, with no fault running continuously along any one floor. The connection to the core was via zig-zag floor trusses which allegedly sagged, despite their fire-proofing.
• WTC 7's core was connected to the periphery by I-beams (blue, above), which allegedly expanded, pushing their girder (green) to the left and off its seat on the column it was supporting – column 79.
• The main problems with this were (a) the absence of a source of expansion-generating heat, (b) the omission of shear studs on the beams and girder which would have prohibited expansion/shifting, and (c) the omission of the steel plates whose purpose was specifically to prevent a girder's shift off its seat.

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Notes:

• Note the belt of squibs as WTC 2 starts to go down, and the squibs that appear as much as 30 floors below, far too great a distance for instant transmission of dust and pressure through sealed elevator shafts and narrow heating/air-conditioning conduits.
• Of key interest is the white squib coming directly out of the solid steel (non-window) corner of WTC 1. It is one of many successive ones that can be seen in David Chandler's video of the North Tower exploding. Nothing about a gravity-driven collapse can explain that.

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Notes:

• The debris field for WTC 1 & 2 is largely outside the footprint of the building, the opposite of what would be expected from a gravity-driven collapse. There are large pieces of structural steel up to 200 yards from their source, some stuck into the sides of buildings like a knife in cheese. Ejection speeds up to 100 mph can be calculated. All of this points to an explosive demolition.
• Note the extension of the debris field to the East due to the tilt of WTC 2's top section.
• WTC 7's debris field (not shown here), on the other hand, is almost completely contained in the building's footprint, indicating a more traditional controlled demolition started from the bottom.

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Notes:

• These stills from videos taken from the North and Northwest show the top of the building descending intact, almost as if it were being sucked into the ground. The only visible deformations are a single vertical crease in the North wall that develops just as descent commences, and a tilt to the Southwest as the building is disappearing from sight (better visible in other videos).
• NIST's model, on the other hand, shows a process that looks more like twisting and crushing a beer can. NIST only pursued the process for the first couple of seconds. You have to wonder how expert scientists can present this obvious divergence from reality with a straight face.

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Notes:

• Angular momentum – once an object starts rotating, it will continue to rotate unless an external force acts on it.
• Here, the top section – the alleged "pile driver" – starts to rotate, but then inexplicably stops rotating and appears to descend, or at least its roofline descends.
• But note that the visible undestroyed corner of the lower section of the building stays in approximately the same position during this "descent." This means that the "pile driver" is not descending and crushing the section below, but is actually being destroyed in midair.
• This conclusion is supported by the absence of large pieces of the top section in the debris pile. There's just a wider distribution of deconstructed debris on that side of the building's footprint (see Figure 3).

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Notes:

• This back-to-back card, passed out with this presentation, shows the ten observed characteristics of the "collapses" of the three buildings, and how all of these are consistent with explosive destruction, and none are consistent with a fire-induced gravity-driven collapse.