Since it may be my last on kos, this diary is dedicated to
ALL who have lost their lives as a result of the events on September 11, 2001 and the First Responders who are now fighting for their lives as well as the people across the globe whose lives are at risk due to the repurcussions of that day.
There were two acts committed by what I call the bush/cheney crime syndicate that amount to crimes of historic proportions.
I call it that not because bush is the "mastermind" behind it but because bush is the frontman for it while cheney is both operational and a link to the rest of the structure.
These two acts that this crime syndicate have committed amount to mass murder and much more.
Volumes of objective facts after the jump --->
Two separate groups have formed to raise the consciousness of Americans and the world regarding these acts.
One group, from among this nation's First Responders, have produced evidence that they say warrants the calling of a Grand Jury to bring charges of murder against high ranking government officials for their roles in lying about air quality in NYC thus sending yet uncounted people to certain slow death.
Another group consisting of over 200 physicists, mechanical engineers, construction engineers, military experts, aviation experts, former members of the CIA and FBI, and scholars from a wide range of areas of expertise relating directly to specific 9/11 events have produced, from widely available public sources, indictable evidence of another kind.
This group is known as Scholars For 9/11 Truth. http://www.st911.org/
Below, some reading for any First Responders here on kos that shows facts, that everyone should be aware of, which directly relate to what brought about the criminal blight which impacted upon the thousands who became heros on 9/11 and after.
Since charges of murder are being sought by these officially disrecognized heros, this further information should also be included in any proceedings that arise from the effort to bring these charges forth.
Throw the book at them. Throw an entire freaking PHYSICAL SCIENCES LIBRARY at them.
No theories, no controversy, no references to opinion, no conspiricizing....just cold, hard science. Take your time...take a week to digest it all if need be.
The first of two very weighty tomes on Gravity
"...the explanations of the collapse that have been given by the 9/11 Commission Report and NIST are not physically possible."
Impossible must be taken in its most literal sense here:
From the rooftop of WTC1, drop one dark blue billiard ball over the edge. As it falls, it accelerates. If it were in a vacuum, it would hit the pavement, 1368 feet below, in 9.22 seconds, shown by the blue curve in the figure 1, below. It will take longer if air resistance is considered, but for simplicity, we'll neglect air resistance. This means that the calculated collapse times are more generous to the official story than they need to be.
Figure 1. Minimum Time for a Billiard Ball dropped from the roof of WTC1 to hit the pavement below, assuming no air resistance:
http://i18.photobucket.com/...
Notice that the billiard ball begins to drop very slowly, then accelerates with the pull of gravity. If in a vacuum, the blue ball will hit the pavement, 1368 ft. below, 9.22 seconds after it is dropped. That is, unless it is propelled by explosives, it will take at least 9.22 seconds to reach the ground (assuming no air resistance).
According to the pancake theory, one floor fails and falls onto the floor below, causing it to fail and fall on the floor below that one, and so forth. The "pancake theory" implies that this continues all the way to the ground floor. In the case of both WTC towers, we didn't see the floors piled up when the event was all over, but rather a pulverization of the floors throughout the event. (see pictures below) So, clearly we cannot assume that the floors stacked up like pancakes. Looking at the data, we take the conservative approach that a falling floor initiates the fall of the one below, while itself becoming pulverized. In other words, when one floor impacts another, the small amount of kinetic energy from the falling floor is consumed (a) by pulverizing the the floor and (b) by breaking free the next floor. In reality, there isn't enough kinetic energy to do either.
[Trumpman][Hoffman]
http://911research.wtc7.net/...
http://911research.wtc7.net/...
But, for the sake of evaluating the "collapse" time, we'll assume there was. After all, millions of people believe they saw the buildings "collapse."
Figure 2. Possibilities to consider for modeling the collapse.
Model A: The floors remain intact and pile up like a stack of pancakes.
http://i18.photobucket.com/...
Model B: The floors blow up like an erupting volcano from the top down.
http://i18.photobucket.com/...
Which of the two models, above, best matches the images below?
Figure 3. Images from the "collapse."
(a) WTC2, demonstrating there is little to no free-fall debris ahead of the "collapse wave," and (b) layer of uniform dust left by the "collapse."
a. http://i18.photobucket.com/...
b. http://i18.photobucket.com/...
If there was enough kinetic energy for pulverization, there will be pancaking or pulverization, but not both. For one thing, that energy can only be spent once. If the potential energy is used to pulverize a floor upward and outward, it can't also be used to accelerate the building downward. In order to have pancaking, a force is required to trigger the failure of the next floor. If the building above that floor has been pulverized, there can be no force pushing down. As observed in the pictures below, much of the material has been ejected upward and outward.
http://i18.photobucket.com/...
http://i18.photobucket.com/...
Any pulverized material remaining over the footprint of the building will be suspended in the air and can't contribute to a downward force slamming onto the next floor. With pulverization, the small particles have a much larger surface-area-to-mass ratio and air resistance becomes significant. As we can recall, the dust took many days to settle out of the air, not hours or minutes. So, even though the mechanism to trigger the "pancaking" of each floor seems to elude us, let's consider the time we would expect for such a collapse.
To illustrate the timing for this domino effect, we will use a sequence of falling billiard balls, where each billiard ball triggers the release of the next billiard ball in the sequence. This is analogous to assuming pulverization is instantaneous and does not slow down the process. In reality, this pulverization would slow down the "pancake" progression, so longer times would be expected. Thus, if anything, this means the calculated collapse times are more generous to the official story than they need to be.
`Progressive Collapse' in ten-floor intervals
To account for the damaged zone, let's simulate the floor beams collapsing every 10th floor, as if something has destroyed 9 out of every 10 floors for the entire height of the building. This assumes there is no resistance within each 10-floor interval. i.e. We use the conservative approach that there is no resistance between floor impacts. In reality there is, which would slow the collapse time further. Also, there was only damage in one 10-floor interval, not the entire height of the building. Thus, if anything, this means the calculated collapse times are more generous to the official story than they need to be. Refer to the figure below.
The clock starts when the blue ball is dropped from the roof (110th floor). Just as the blue ball passes the 100th floor, the red ball drops from the 100th floor. When the red ball passes the 90th floor, the orange ball drops from the 90th floor, ... etc. Notice that the red ball (at floor 100) cannot begin moving until the blue ball reaches that level, which is 2.8 seconds after the blue ball begins to drop.
This approximates the "pancaking" theory, assuming that each floor within the "pancaking" (collapsing) interval provides no resistance at all. With this theory, no floor below the "pancake" can begin to move until the progressive collapse has reached that level. For example, there is no reason for the 20th floor to suddenly collapse before it is damaged.
With this model, a minimum of 30.6 seconds is required for the roof to hit the ground. Of course it would take longer if accounting for air resistance. It would take longer if accounting for the structure's resistance that allows pulverization. The columns at each level would be expected to absorb a great deal of the energy of the falling floors. Thus, if anything, this means the calculated collapse times are more generous to the official story than they need to be.
http://i18.photobucket.com/...
`Progressive Collapse' in one-floor intervals
Similar to Case 2, above, let's consider a floor-by-floor progressive collapse.
Refer to the figure below:
http://i18.photobucket.com/...
Total time: 87.9 to 96.7 seconds.
Now, let's consider momentum.
Assume that the top floor stays intact as a solid block weight, Block-A. Start the collapse timer when the 109th floor fails. At that instant, assume floor 108 miraculously turns to dust and disappears. So, Block-A can drop at free-fall speed until it reaches the 108th floor. After Block-A travels one floor, it now has momentum. If all of the momentum is transferred from Block-A to Block-B, the next floor, Block-A will stop moving momentarily, even if there is no resistance for the next block to start moving. If Block-A stops moving, after triggering the next sequence, the mass of Block-A will not arrive in time to transfer momentum to the next "pancaking" between Block-B and Block-C. In other words, the momentum will not be increased as the "collapse" progresses.
Now, recall the physics demonstration shown below. (I believe everyone who has finished high school has seen one of these momentum demonstrations at some point in their life.)
http://i18.photobucket.com/...
Note, if some part must stop and then restart its descent every floor, the total collapse time must be more than 10 seconds. Given that the building disintegrated from the top down, it is difficult to believe there could be much momentum to transfer, anyway. Also, consider the energy required to pulverize the floor between each "pancake." After being pulverized, the surface-area/mass is greatly increased and the air resistance becomes significant. I don't believe this pulverized material can contribute any momentum as it "hangs" in the air and floats down at a much-much slower rate than the "collapsing" floors.
http://i18.photobucket.com/...
Now, let's consider reality.
QUESTIONS:
(1) How likely is it that all supporting structures on a given floor will fail at exactly the same time?
(2) If all supporting structures on a given floor did not fail at the same time, would that portion of the building tip over or fall straight down into its own footprint?
(3) What is the likelihood that supporting structures on every floor would fail at exactly the same time, and that these failures would progress through every floor with perfect symmetry?
Let's say that we want to bring down the entire building in the time it takes for free-fall of the top floor of WTC1. (Use 9.22 seconds as the time it would take the blue ball to drop from the roof to the street below, in a vacuum.) So, If the entire building is to be on the ground in 9.22 seconds, the floors below the "pancaking" must start moving before the "progressive collapse" reaches that floor, below. To illustrate this, use the concept of the billiard balls. If the red ball (dropped from the 100th floor) is to reach the ground at the same time as the blue ball (dropped from the 110th floor), the red ball must be dropped 0.429 seconds after the blue ball is dropped. But, the blue ball will take 2.8 seconds after it is dropped, just to reach the 100th floor in free fall. So, the red ball needs to begin moving 2.4 seconds before the blue ball arrives to "trigger" the red ball's motion. I.e., each of these floors will need a 2.4 second head start. But this creates yet another problem. How can the upper floor be destroyed by slamming into a lower floor if the lower floor has already moved out of the way?
Case 2, above, shows the red ball being dropped just as the blue ball passes that point.
Remember, I'm assuming the building was turning to dust as the collapse progressed, which is essentially what happened.
So, for the building to be collapsed in about 10 seconds, the lower floors would have to start moving before the upper floors could reach them by gravity alone.
Did we see this? I believe it's pretty clear in some of the videos. The "wave" of collapse, progressing down the building, is moving faster than free-fall speed. This would require something like a detonation sequence.
Realizing that, for example, the 40th floor needs to start moving before any of the upper floors have "free-fallen" to that point, why would it start moving? There was no fire there. And, if anything, there is less load on that floor as the upper floors turn to dust.
In the picture (at right), notice that WTC2 is less than half of its original height, yet has no debris that has fallen ahead of the demolition wave.
http://i18.photobucket.com/...
This part of the building surely took a lot longer to hit the ground as dust than it would have if it came down as larger pieces of material.
We know that sheets of paper have a very high surface-area-to-mass ratio and will stay aloft for long periods of time, which is why paper is an excellent material for making toy airplanes. The alert observer will notice that much of the paper is covered with dust, indicating that this dust reached the ground after the paper did.
http://i18.photobucket.com/...
In the above picture, there are a few tire tracks through the dust, but not many, so it was probably taken shortly after one (or both) of the towers were down. Also, the people in the picture look like they've just come out of hiding, curious to see what just happened and to take pictures. If there had been a strong wind blowing the dust around, it would blow the paper away before it would have blown the dust onto the paper. So, the fact that much of the randomly-oriented paper is covered with dust indicates the relative aerodynamic properties of this dust.
Also, notice the dark sky as well as the haze in the distance. This was a clear day with no clouds in the sky... except for the dust clouds. This overcast appearance as well as the distant haze can only be explained by dust from the "collapse" that is still suspended in the air.
So, how could the ground rumble for only 8 seconds while WTC1 "disappeared?"
I don't think this part of the building made a thud when it hit the ground.
In conclusion, the explanations of the collapse that have been given by the 9/11 Commission Report and NIST are not physically possible. A new investigation is needed to determine the true cause of what happened to these buildings on September 11, 2001. The "collapse" of all three WTC buildings may be considered the greatest engineering disaster in the history of the world and deserves a thorough investigation.
http://janedoe0911.tripod.com/...
Gravity; Book II
It is an absolute fact that WTC7 fell at the speed of freefall in a vaccuum.
There is NO "official" explanation as to WHY WTC7 fell. This particular book on gravity was the inspiration for an educational presentation that leaves no room for any alternatives:
Go here and click "play" and see for yourselves :::: WTC7 collapsing at the rate of freefall in a vaccuum:
http://www.v911t.org/...
Further video which gives an expert explanation.....since we have no "official" explanation:
Mr Jowenko is a controlled demolition expert with years of experience in this area. He didn't know WTC7 had also come down on 9/11. Here he sees it for the first time and is asked how it fell BEFORE he is told it was WTC7 on 9/11:
The opinion of an Expert Without an Agenda
http://www.supportthetruth.com/...
The clip is from a nationally televised program aired in the Netherlands. Jowenko is in no doubt even after being told the circumstances.
"This is professional work without any doubt."
This renders all the explanations offered by the administration's propaganda machine IMPOSSIBLE.
From the Structural Mechanics shelves
Physics is a funny thing...it contains immutable laws.
These laws are used all the time in definitive proofs. One of these laws is conservation of energy. In the case of the towers it can be applied to the known mass of a tower and its known average height. These two numbers, along with the force due to gravity at sea level yield the total potential energy available in a gravity driven collapse. The value is not debatable...it's fact.
Certain effects of the collapse are also facts. The physics has been done and the values show that just 2 of these known effects required over 12 times the energy available in a gravity-only collapse.
The amount of energy required to expand the North Tower's dust cloud (the observed pyroclastic flow after collapse) was many times the entire potential energy of the tower's elevated mass due to gravity. The over 10-fold disparity between the most conservative estimate and the gravitational energy is not easily dismissed as reflecting uncertainties in quantitative assessments.
The official explanation that the Twin Tower collapses were gravity-driven events appears insufficient to account for the documented energy flows.
http://911research.wtc7.net/...
So...just the expansion of all the material that was reduced to 30 micron-sized dust particals was more than can possibly be accounted for by the government fable.
On top of the expansion of the dust clouds there was the required energy to create the dust in the first place:
The energy required to convert a tower's 600,000 tons of concrete into dust of 60 micron particle diameter is about 900,000 KWH.
http://www.911-strike.com/...
http://911research.wtc7.net/...
Gravitational potential energy is the energy released in a structural collapse, which may typically be dissipated by concrete crushing in a "pile driver" effect.
This energy is calculated by the equation U=mgh, with mass in kg, gravitational force constant g=9.8m/s/s, and h in meters. The energy units in this equation are joules (watt-seconds) but large energies are more commonly expressed in kilowatt hours (1kwh=3.6e6 joules).
Because the WTC towers are both massive and tall, the gravitational potential energy of each tower is enormous.
Assuming a mass of 750,000 tons (6.8e8 kg) falling from an average height of 207 meters (half of the overall height of 1365 feet), the gravitational potential energy is about 1.4e12 joules or 400,000 kwh.
The energy required to crush rock is roughly proportional to 1/sqrt(powder diameter), so the exact amount of energy required is critically dependent on the fineness of the powder. The energy required to reduce solid rock to 60 micron powder is about 20 kwh/ton:
http://www.elorantaassoc.com/...
However, concrete is softer than rock, and a round number for the energy required to crush concrete is around 1.5 kwh/ton:
http://www.b-i-m.de/...
With roughly 600,000 tons of concrete in each WTC tower, the available energy from gravitational potential energy was only about 0.7 kwh per ton of concrete.
http://www.911-strike.com/...
"This was the South Tower. This was 104, 106 stories, all of it - this is what is left. Up there was the North Tower. And you look and you see - there's no concrete. There's very little concrete. All you see is aluminum and steel.
--George Pataki
http://www.youtube.com/...
The "official" story is impossible on so many levels. How many times does something have to be impossible to truly be impossible? ONCE.
An Earth shaking Seismology treatise
Before the planes struck
The times of the seismic spikes is undeniable proof that more than just airliners impacted the towers.
The particular seismic facts discussed here have added weight. It is independently corroborated by eyewitness accounts. Independent corroboration is significant because it makes the whole greater than the sum of its parts because both pieces of evidence corroborate each other...it's a two-way connection.
http://www.scholarsfor911truth.org/...
On 9/11 the seismic stations grouped around New York City recorded seismic events from the WTC site, two of which occurred immediately prior to the aircraft impacts upon the Twin Towers. Because these seismic events preceded the collisions, it is clear they were not associated with the impacts and must therefore be associated with some other occurrence. None of the authorities charged with the responsibility for the investigation of the events of 9/11 have proposed a source for these seismic events, nor have they given a valid reason for the difference in times between the seismic events and the aircraft impacts. Only by consideration of the evidence of basement explosions before the aircraft impacts, as experienced by William Rodriquez and 36 others, can an explanation be found for the fact that the seismic stations recorded seismic events originating from the WTC sites prior to the aircraft impacts. It seems unlikely that Middle Eastern terrorists could have overcome the WTC security and managed this kind of high level technological coordination. The facts presented here, simple and few, raise the possibility of inside help and involvement in 9/11/01, both before and after the attack.
OVERVIEW
This paper is concerned only with the factual data surrounding the exact impact times of the two aircraft that hit WTC1 and WTC2. Everything else about 9/11 is outside the scope of this paper.
This is not a theory or hypothesis, but a statement of publicized facts regarding the timing of the aircraft impacts. There exist two separate precision data time sets that address when the aircraft crashed into the Towers. Both data time sets are based on UTC (Coordinated Universal Time, the world's atomic clock system) and the sources that determined these times were prestigious, reliable and credible.
There is no question regarding the precision and accuracy of the instruments used to record both data time sets, since their entire function depends and relies upon temporal accuracy, and therefore there can be no doubt that both data time sets are correct. The time data sets represent objective scientific data recorded by two separate, independent entities.
The problem is the data sets have different impact times.
These times were given out years ago but at different times. Lamont-Doherty Earth Observatory at Columbia University (LDEO) gave its findings around the time of the actual event with what it thought were impact times based upon the seismic data recorded, while the 9/11 Commission published its impact times, based upon FAA radar data and air traffic control software logic, years later in its Final Report. The Commission no longer exists.
Here are the impact times for each source:
...............................AA Flt 11.....UA Flt 175
LDEO:......................8:46:26.....9:02:54
9/11 Commission: ....8:46:40.....9:03:11
Differentials: ...........14 secs.....17 secs
SEISMIC DATA AND TIMES
LDEO Published Findings
Link: http://www.ldeo.columbia.edu/...
(all times plus or minus 1 to 2 seconds)
http://www.scholarsfor911truth.org/...
LDEO confirmed its data as accurate:
http://www.mgs.md.gov/...
9/11 COMMISSION DATA AND TIMES
Commission Timeline
Link: http://www.gpoaccess.gov/...
The Commission's times are based upon: "We have determined that the impact time was 9:03:11 based on our analysis of FAA radar data and air traffic control software logic." [9/11 Commission Report, pg 460, Note 130]:
http://www.scholarsfor911truth.org/...
http://www.insightful.com/...
(Note 130 is the basis for WTC1 & WTC2 precision impact times to the second)
http://www.scholarsfor911truth.org/...
It is known that the FAA followed the aircraft using four different radar tracking stations utilizing primary radar return with all times to the second. Radar is based upon microwaves that travel at the speed of light, and therefore an error variance (which is in microseconds) need not be stated.
The Commission Report has the impact times.
Their data set is based upon actual flight data that ended when the Towers were struck.
There is no question: AA Flight 11 died exactly at 8:46:40 and UA Flight 175 at 9:03:11 [UTC - 4 hrs].
Since the planes crashed at those times, the question is: What caused the LDEO times 14 and 17 seconds earlier? What caused those seismic spikes?
On the face, it seems tenuous that the spikes were "impact times". How does an aircraft impacting the WTC near the 90th floor result in energy transference that travels all the way down to the earth, even through the massive multi-level, 6-story sub-basement structure, and be picked up by LDEO as a seismic spike? Energy from the crash should have mostly been absorbed by the building's immense structure and mass.
The following is an excerpt about an eyewitness at WTC1 by the name of William Rodriguez (he worked at the WTC complex for 20 years, was acknowledged a hero for the many lives he saved that day, and he was the last person out of the building before it came down):
http://www.newswithviews.com/...
Arriving at 8:30 on the morning of 9-11 he went to the maintenance office located on the first sublevel, one of six sub-basements beneath ground level. There were a total of fourteen people in the office at that same time. As he was discussing the day's tasks with others, there was a very loud massive explosion which seemed to emanate from between sub-basement B2 and B3. There were an additional twenty-two people on B2 sub-basement who also felt and heard that first explosion.
At first he thought it was a generator that had exploded. But the cement walls in the office cracked from the explosion. "When I heard the sound of the explosion, the floor beneath my feet vibrated, the walls started cracking and everything started shaking." said Rodriguez, who was crowded together with fourteen other people in the office including Anthony Saltamachia, his supervisor for the American Building Maintenance Company.
Just seconds later there was another explosion way above which made the building oscillate momentarily. This, he was later told, was a plane hitting the Tower at about the 90th floor. Upon hearing about the plane, he immediately thought of the people up in the restaurant. Then there were other explosions just above B1 and individuals started heading for the loading dock to escape the explosion's resulting rampant fire. When asked later about those first explosions he said: "I would know if an explosion was from the bottom or the top of the building." He heard explosions both before and after the plane hit the Tower.
The number of witnesses who presented evidence of explosion and explosion damage, and particularly the injuries that some witnesses received, again leaves no room for doubt that there were explosions in the basement of WTC1. The following video link of the powerful testimony of William Rodriguez is evidence that corroborates the facts of this paper; and these facts corroborate these 37 eyewitnesses:
http://video.google.com/...
CONCLUSION
Several seismic stations recorded seismic signals originating from two events which occurred at the WTC site, immediately prior to both aircraft impacts. Because these signals preceded the impacts there can be no doubt that the seismic signals recorded were not those associated with the aircraft impacts on the Towers.
These signals were, in fact, the seismic spikes associated with the huge basement explosions reported by witnesses.
From the Geometry section
The slope coming off the road at the Pentagon where the lamp poles were:
http://perso.orange.fr/...
The path taken by what struck the Pentagon as dictated by the first two Pentagon videos released:
http://perso.orange.fr/...
To strike the Pentagon the trajectory that MUST have been taken does not match up with what the Pentagon videos purportedly show:
http://perso.orange.fr/...
The "Pentagon videos" are frauds.
http://perso.orange.fr/...
Remember, by definition, the impossible cannot occur.
Bonus book as a reward for making it this far through this diary...Videography
http://perso.orange.fr/...
A Chemistry Text
If you haven't heard of Professor Steven jones yet...where have you been? His findings from tests conducted on 2 samples of WTC steel is said to show that an incendiary compound called thermate was at work on 9/11.
The chemical signature left by a thermate reaction is like a fingerprint. Specific ratios of specific compounds are what make up this fingerprint. This fingerprint cannot be caused by the random introduction of the ingredients necessary to produce a thermate reaction...it can only come specifically from thermate itself. His work has not yet been published as far as I know but it is said to have been verified by two other labs at other universities and a peer-reviewed paper of the study is forthcoming.
There's also some verification in the FEMA report which puzzles over the observed sulfidation of the steel. It puzzles over this because it has no explanation that can be taken from the narrow context within which it seeks to explain the phenomenon.
http://www.fema.gov/...
From http://www.wpi.edu/...
There is no indication that any of the fires in the World Trade Center buildings were hot enough to melt the steel framework. Jonathan Barnett, professor of fire protection engineering, has repeatedly reminded the public that steel--which has a melting point of 2,800 degrees Fahrenheit--may weaken and bend, but does not melt during an ordinary office fire. Yet metallurgical studies on WTC steel brought back to WPI (Worcester Polytechnic Institute) reveal that a novel phenomenon--called a eutectic reaction--occurred at the surface, causing intergranular melting capable of turning a solid steel girder into Swiss cheese.
Materials science professors Ronald R. Biederman and Richard D. Sisson Jr. confirmed the presence of eutectic formations by examining steel samples under optical and scanning electron microscopes. A preliminary report was published in JOM, the journal of the Minerals, Metals & Materials Society. A more detailed analysis comprises Appendix C of the FEMA report. The New York Times called these findings "perhaps the deepest mystery uncovered in the investigation." The significance of the work on a sample from Building 7 and a structural column from one of the twin towers becomes apparent only when one sees these heavy chunks of damaged metal.
A one-inch column has been reduced to half-inch thickness. Its edges--which are curled like a paper scroll--have been thinned to almost razor sharpness. Gaping holes--some larger than a silver dollar--let light shine through a formerly solid steel flange. This Swiss cheese appearance shocked all of the fire-wise professors, who expected to see distortion and bending--but not holes.
A eutectic compound is a mixture of two or more substances that melts at the lowest temperature of any mixture of its components. Blacksmiths took advantage of this property by welding over fires of sulfur-rich charcoal, which lowers the melting point of iron. In the World Trade Center fire, the presence of oxygen, sulfur and heat caused iron oxide and iron sulfide to form at the surface of structural steel members. This liquid slag corroded through intergranular channels into the body of the metal, causing severe erosion and a loss of structural integrity.
A piece of possible photographic evidence is an often pointed to pic:
http://www.lookingglassnews.org/...
There is substantial evidence that thermite was used to cut the central support columns, which caused the towers to fall.
Evidence can be seen on photographs of the columns from the rubble of the World Trade Center.
In this photo, for example, the column directly above the fireman's helmet shows that it was cut with thermite. There is a substantial amount of hardened molten iron which can be seen on both the inside and outside of the box column. This is precisely what one would expect to find on a column which had been cut with thermite.
Experts who have viewed this photograph say that this column was not cut with a torch.
And from the lips of dear leader himself
The recognition by the administration that these facts are getting through to more and more people has prompted an interesting statement by bush that amounts to a trial balloon for how they might spin the explosive implications.
"...Khalid Sheikh Mohammed described the design of planned attacks of buildings inside the U.S. and how operatives were directed to carry them out.... He told us the operatives had been instructed to ensure that the explosives went off at a high -- a point that was high enough to prevent people trapped above from escaping."
This was a scripted statement...not just one of his extemporaneous inanities.
http://www.whitehouse.gov/...