everybody seen the building collapses on line eleven and it was shocking how fast the buildings collapsed the way the buildings fell was not indicative of the way of a building that's in distress collapses this doesn't happen with structural steel buildings and never has and never will again we assume that fires could destroy a building why people slick steel buildings and because they would destroy slowly it would gradually twist and bend and give people plenty of time and safety in getting out of the building and the basic philosophy of the building code so i seventy five to eighty ears has been to sure dr failure of the members to provide to the public safety under this philosophy  are visible and apparent to the occupants of the structure this gives them time to evacuate the structure i would not have expected the whole building to just give in once and i thought it rather that they  i was surprised to see the upper floors of the north tower the upper fifteen floors of the north tower implode prior to any destruction of the tower below because it would be logical that as a result of the plane crash that the upper fifteen floors would start to damage the floors below the floors above and it certainly would stay in the damage or it would not drop down through eighty thousand ton of insulated and damian structural steel and do it in twelve seconds i discussed this claim that the upper section of each of the towers across the lower section however when you watch video closely in the case of world trade center one you'll see that the upper section disintegrates itself its lower stories are breaking up before it even impacts the lower section it appears to be a controlled demolition of its own of the upper section the tops of the buildings were basically disintegrated the top section pushing on the bottom section to meet equal forces as it goes both sections are going to be demolished at the same rate so by the time you crush fifteen stories below the top fifteen stories are also to be crushed and so there's nothing left now to crush the rest of the building so there are so many paradoxes here a little tiny chunk of the building can't possibly fall and crush the entire structure below it others  demolitions done in france would choose what we call the bernard stack technique where they take out a couple floors where the cars were hydraulics they take the columns out they let the building the upper section during drop to full force and when it impacts lower section there's a very definitive observable joel deceleration and the loss of the loss you're looking for a jolt that this thing if it actually comes down and hits you should be able to see the point at which they actually impact because it would actually slow down the motion of the falling one and you can see that with it is not there in the case of the north south it never slows down get excel or it's the entire time and that was what was extremely significant so i published a paper about doubts in the journal of nine eleven studies and so if you had the top section acting like a pile driver if in fact it actually hit and made an impact was affectively crushing anything pushing hard on this core structure below the core structure is going to push back equally hard and that's what's going to cause the top section of the building to slow down but the fact that it's consulate celebrating downwards is evidence that it didn't slow down it's not actually hitting and engaging with the structure following in any way that could demolish it the top section is not crushing the bottom section of the building or it would meet resistance i am a kid you may be tired professional electrical engineer i went through brooklyn over conceptual maintenance and improvement of the elevated systems after the project which completed and very familiar with the inferior truc i had a friend that asked me if it was possible for the twin towers to achieve near free fall speed when they collapsed the twin towers couldn't could not of come straight down through the thousands of tons of structural steel through the greatest resistance resistance of eighty thousand tons of structural steel at this speed of a practically free fall that just would not happen there are columns of steel around the exterior of the building and within the core all of which are there to prevent the thing from falling down in so if even if something falls on it it's not going to mediately just go pop pop pop pop  that floor by floor it's going to if it's going to collapse it's going to tough to take some time to weekend the structure below it this structure was capable of holding three to five times the weight and here it is falling through it with the resistance  only one third of its weight roughly ninety percent of the resistance has been removed and what's happening is the top section is crushing down the lower section like a pile driver which is the picture that miss basically for the fundamental laws of nature conservation of energy there was no time for this elastic defamation and plastic definition which would have to have absorbed energy and decrease that this sent to less than freefall speed as energy is drained away from the system to deformed those members it would slow down the descending mass and chorus a descent that last entry for speed this is high school physics and our whole society is being led to believe that these fundamental laws of physics hard science don't apply anymore i think that she really frightening all of us over four hundred connections per second had t fail in order for the minute for the member to be released and for the structures to descend at almost freefall rate structural connections not only have to fail nearly simultaneously but in what you are the building fall at a speed which can only occur if the structure has been removed the vertical structure this block accelerates straight down it's picking up speed downward continually it doesn't slow down it just continues to gain speed a from what i what i understand the buildings actually exonerated as i came down meaning they were not getting resistance from these massive columns in the center of the core of this building core this building was very heavy for huge columns huge i cannot see how those massive very sick columns could just snap like that i would have expected and most of them to stay intact with the floors collapsing around them i'm outside lopez i'm a registered professional structural engineer in the state of michigan and have been in private practice for forty years lopez engineering i've worked on several high rise projects where office buildings parking decks and high rise apartment buildings here in the the buildings collapsed but expected that they would have come down much slower that that it would have tipped over the whole thing did not make sense and ever since and hard time believing that the fires did drop the buildings i thought that given the way the planes hit the building one site would have given away first and just would have fallen off fallen over in a steep angle but the way the whole thing just gave way it once and started to plummet down without slowing down as it went down again just like the controlled demolition i witnessed personally the area below the damage where the planes flew in and where the fire lies that area below that eighty or ninety stories eighty thousand tons of structur steel was not damaged in any way yet you stood there and watched it destroy itself wiping out floor by floor all two hundred eighty seven structural columns as if they didn't exist in the melted metal and the dust particles and with the chemical explosive chemicals found in the in the debris that there's just a lot of questions about what's been going on and that these questions of not been and he videos of witnesses from that day that report explosions there's radio transmissions from the afghan why we have the transcripts that were recorded you know back in two thousand and one all these firefighters and first responders reporting explosions there's no doubt they were h very plausible for any other type of cause for such an event to doesn't look like a cloud it's like a huge mushroom in billowing kind of an event collapse of the towers and the fact that controlled demolition is consistent with all the available technical evidence and the response that i request for a correction is not simply saying they're unable to provide a for total collapse even though that was their past given to them by congress the core structure of the building had to have been destroyed by other  out of the towers at sixty miles an hour for a distance of six hundred feet they also show clouds of debris in mid air and isolated explosive ejections as many as sixty stories below the so called videos also show the near total destruction of both towers what does all this tell us about the forces and energies involved and the destruction the spread of debris and a large radius around each tower what we see is an outward explosion of material beyond the parameters of each footprint and this is not expected and it's not can grow and with the reports of our government debris that was shooting out for hundreds of feet in all directions seventy miles an hour leaving the eightieth floor of the north tower and making a fairly level trajectory that to me is fairly alarming large multiplan beams were hurled hundreds of yards laterally gravity works vertically not laterally the number got was seventy eight miles an hour so something is happening to throw these things horizontally at those kinds of speeds and here it is trailing white smoke the whole time it really is indicative of some kind of explosion the individual explosions they noticed twenty and thirty and forty stories below the collapsing structure those are what we demolitions guys call squids and that's another characteristic that seems to be evident well in the case of the south tower you can see these jets of black smoke being ejected from many locations on many different floors above the level of the impact there's a whole bunch of these squibs or puffs that are coming out the side of the building and naysayers tend to say well that's just area being blown out the windows because they feel like an accordion effect can be compressed well it's going on on a lot of different levels at the same time there's one coming and if you're compressing it out here if you're blown out the windows down here how are you getting side but not the kind of explosive force that we saw i beams across the street into the windows of other buildings the exaction of the materials out of the building and the manner in which it fell the speed at which it fell exhibit all the signs of demolitions and the completeness of destruction down to their individual elements when the south tower was destroyed at first it looked like it was going to land in the street or take a building next to it and then all of a sudden it disappears in this huge cloud of smoke which didn't seem to make sense of the time how can those steel columns the massive steel columns supporting that building virtually disappear why aren't they picking up great out of out of that rubble at the bottom of the building as an architect i would expect to  see larger portions of the building floors the decking the steel decking the concrete topping much larger remnants of what the structural components of this building was there were just small fragments strewn steel components there should have been much larger pieces for examination on the ground after all there was one hundred ten floors in each building and each floor plate was over an acre in size the fact that it was all reduced to rubble counter just did not make sense of all we have no explanation of how the concrete was pulverized it takes an enormous amount of energy those eight locations there were four trains forming in each station that weighed over thirty thousand pounds in the substations on the mechanical floors and the tower transformers would not explode on their own they were air cooled dry type transformers and yet after the collapse there were from what was reported there was no evidence of them being found at the bottom of the towers i wonder why it was rich shame that after the collapse that a forensic unit friendship engineering  given a better indication that the crime that there was something else wrong in its report on the world trade center seven which came out in may of two thousand and two to my documents in appendix c steel that has been melted and even partially evaporated resembling swiss cheese what are we to make of this my name is jeff air i have a ph d in materials science and engineering from the university of minnesota i have a b a in physics from brigham young university i've worked with so jonathan barnett study which i thought was very well done and quite extensive is all documented by fema in penn dixie and their in their be pat report that was may of two thousand and two unfortunately it was never used in the nist report my name is jason cheshire and i'm a licensed professional engineer in the province something terrio in canada and i have been working in the field of hydro metallurgy for the past ten years i'm a chemical engineer i have a bachelor of science in chemical engineering from worcester polytechnic institute i've worked for about twenty five years in industry and the majority of what i do is analytical work a figuring out what materials are composed of why they are what they are why they do what they do there were sections of them that clearly showed melting they had sections that within the way and there were actually holes through them and some of the ends were just melted away or even possibly evaporated away i'm kathy my grade i have a bachelor's in metallurgical engineering from new mexico institute of mining and technology which i got in one nine hundred seventy nine i then spent the next thirty years  with three start up companies in an office fire you cannot generate enough heat to melt steel and yet we have evidence of i in the rubble pile and the the metal pouring out of the side of the tower filled up the twin towers with jet fuel and burned it all up and it does not cause a fire hot enough to melt structural steel my name is gary warner i'm a mechanical engineer i hold professional certification from or from the association of british columbia i worked as the in a project oxide into aluminum no more than aluminum meant aluminum silver is not yellow it's silver it looks like mercury yellow molten metal that i saw pouring out of the south tower is indicative of molten irony i was a bit incredulous when i learned that nist claimed that the more metal was a years casting i david gregory i was masters and p h d in chemical engineering from the university of illinois afterwards i went to work for lawrence liberal laboratory where i worked there for more than thirty can cause steel or iron oxide to be turned into a mold metal is that a blast furnace yeah that's very different than what we had and incendiary used by the military thermite is a compound of iron oxide in aluminum which when ignited sustains an extreme heat reaction creating molten iron in just two seconds thermite can reach temperatures over forty five hundred degrees how do you get how do you get the sulfur in these pieces of steel or or in the debris and and that question is is unanswered there's a version of thermite called  on the world trade center steel the new york times called this the deepest mystery of oh so first slightly lower is the melting point of iron and iron oxide and iron southside and it just basically makes the steel melt at a lower temperature so instead of having to bring the steel up to fifteen hundred santa's grade you can slice through the material that's at nine hundred or a thousand degrees centigrade and if you do a search on google for thermite and building demolition you can find all sorts of wonderful devices that have been fabricated and invented that used their mate for building demolitions thermite is in the old fashioned thermo is a mixture of pulverized aluminum and is something which can be used to destroy something by the me or heat while an explosive is something which reacts with it know things apart  the only fashion incendiary is not an explosive it is still used for military purposes for melting iowa structures practical applications of thermite involve things such as equipment decommissioning in the military when they have a piece of artillery or a tank or something like that that they don't want to leave behind to the enemy they throw what are called grenades thermite grenades down the barrel let's say but thermite does not explode it simply reacts produces large amounts of heat and molten material in the case of thermite cutting charges you would have heard far less noise since they are work by thermal heating melting of the steel rather than explosive cutting as engineers where among other things i had training and explosive such as c four i was involved in the industrial chemical industry for twenty years with major companies there were reports of molten steel having been seen in the in the rubble pile of all three buildings and i knew that jet fuel which is essentially kerosene is not  capable of melting steel nor iron kerosene or jet fuel burns at less than sixteen hundred degrees fahrenheit and molten steel needs at least  twenty seven hundred degrees fahrenheit in order to melt thing that most struck me about you know eleven incident was following the incident how overflights had detected do with infrared camera fourteen hundred degree fahrenheit hot spots on the surface of ground zero and that being there for a week you know indicates that there was something very hot going on below the surface  another question that may haunt the new freedom tower according to u s g s they found as much as six percent of the world trade center dust consisted of tiny previously molten iron does this tell us about the temperatures generated in the towers destruction my name is adam perry and i have a bachelor's degree in chemical engineering from queens university i've been working for an environmental consultant for a number of years when the u s g s collected samples of the world trade center dust they found the iron microspheres and so far the u s g s does not have a valid explanation in chemical engineering from texas tech and i have extensive coursework in mathematics and physics from the university of texas at austin i have had broad experience in analysis and applied research thirty year professional history spanning physics chemical engineering statistical analysis and modeling and operations research so what do the microspheres contain iron is the all the dust blown out of the buildings during collapse no matter where in manhattan the that dust is picked up you must have had a much hotter heat source for you to get twenty seven hundred degrees fahrenheit in order to melt th e steel melt the iron to get these are these fears these mountains fears your heat source must be something like a chemical reaction and exit from a chemical reaction that reacts in the case of thermite reacts at forty five hundred degrees fahrenheit my contention based on finding thermite residue in the dust is that it happened before and it didn't happen after in there in the fires that ensued in the rubble pile afterwards it's all the characteristics of the microspheres along with what i see in the attack of the the beams that were actually found tell me that thermite was involved in melting that those steel  an international team of scientists find an advanced form of highly energetic nano thermites composites what is it and where does it come from my name is  master and a ph d in chemistry and i'm associate professor at the university of copenhagen and i have been so for almost forty years i have published close to sixty peer reviewed papers in the best journals and currently i'm involved with the research x ray time resolved spectroscopy on time scales of one millionth of one million in the dust we found what we characterize as on reacted thematically material and in the shape of some very tiny rate ok great the prime indication of the media reaction and such a reaction can be used to destroy steel structures what we have found thin plate let's about forty nanometers thick it is the small size of the particles involved in this material that care allow us to characterize it as nano  in ordinary thermite the particle size is much larger and hence ordinary thermite is an incendiary whereas as the particle size becomes smaller and smaller it can become explosive super thermite is sometimes called this red material contains also a significant amount of carbon and the formulation of nano thermite is described by national laboratory publications also implies the presence of carbon and very typically the organic is used with nano thermite in order to produce gas that is a very high pressure gas that makes the  and explosive we do have descriptions from the the livermore national laboratory in particular of how they fabricated this material is that to fabricate it is not so easy this is discussed in our paper in the open chemical physics journal published in april of two thousand and nine so far none of these papers have been refuted in the literature in the scientific literature so that means they are  challenged in the scientific sense they stand as an indictment really of the official story of nine eleven one of the things i'd like to stress about these chips is that they really shouldn't be there they're not a natural form agglomeration of aluminum from the aircraft or materials that were in the building and iron oxide that got knocked off it isn't just a haphazard bringing together of iron oxide and aluminum which is the basic components of thermite this is a material that is made up of nano sized particles that are all very uniform very symmetrical the formulation of the great ch and our whole society is being led to believe that these fundamental laws of physics hard science don't apply anymore i think that she really frightened all of us just all the other evidence of seeing flashes and explosions and the melted metal and the dust particles and with the chemical explosive chemicals found in the in the debris just a lot of questions about what's been going on and that these questions have not been answered we're even addressed in any sort of full way my name is rick folks i'm a structural engineer with over forty years experience in engineering i'm a president of my own engineering business here in arizona since  that i was a vice president was prominent engineering firms in the phoenix area i have experience designing large structures including power plant structures shopping center structures schools commercial buildings you name it i know structural design and i know that on september eleventh when i saw those twin towers coming down i knew there had to be more to the story than just a fire because in those failures that had to be controlled demolition that we were witnessing the government has lied to us and we need to get to the truth those victims deserve the truth they deserve justice what we have right now is a travesty of justice the freedom of information act requests and this registered structural engineer accusations and analysis  substantiating the walk all failures of the horizontal girders from their seats a column seventy nine eighty one was denied by this but the claim that releasing this data might jeopardize public safety how could that possibly jeopardize public safety to tell people in the industry engineers who were responsible for the design of these buildings how this failure occurred that implies that anybody who requests or demands these calculations is a threat to public safety science is never secret when it's done right science is a way of finding out that is self correcting and vols many people science isn't science unless it's published unless it's openly published and made available for criticism the thing that's most important about science is that it's a way of knowing it's a way of knowing that anyone can participate in at the end of any kind of science activity people will agree that they have collected evidence that illustrates a hypothesis and if the evidence is contradictory to the hypothesis you have to have one has to abandon that hypothesis and look for another one the explanations from fema and from nist don't add up but there is enormous circumstantial evidence circumstantial and actually physical evidence as well that would lead us to a different conclusion and the conclusion is controlled demolition reframed that after the collapse that a forensic unit for and forget engineering you didn't go into the debris and cry to find that trying when the towers had collapsed i'm sure that we have other evidence that they could have given a better indication i think crowing that they were from thing wrong any honest investigators would be looking at this and looking for explosives and so forth and just investigation didn't go there they just would not look for explosives that have been explosives found in the dust and the debris but this has been the work of independent research was not noticed and that the physical chemistry of everything that i wrote about is consistent with no other hypothesis and all the testimony of eyewitnesses all of the video evidence supports only controlled that demolition has the cause of all three world trade center buildings  understructure you don't have to be a chemical engineer to question that official story is very very obvious both building seven and the towers were brought down by demolition could have been any other possible conclusion i come to based upon first of all my training and my education particularly my experience in blowing up major those events is extremely disturbing and is a violation of my pain and professional code of ethics the only thing that you can say about their participation in this is that it must have been an orchestrated cover so the preconceived notion of miss is that there is no evidence for explosives and so there's no point in looking that is the most unscientific thing you can possibly think of not to look because you don't expect to find evidence and in fact the evidence is overwhelming they state these conclusions for which there's virtually no evidence and then they you know are conclusions that can be drawn from the evidence is my opinion as a former twelve combat engineer well trained in the use of explosives that this building all three buildings were brought down as controlled as a result of controlled demolitions elevator company personnel had twenty four seven access to the shaft which is normal time and even in early morning hours when they perform their maintenance and of course their access to the look at the possibilities and really you need to go where the evidence leads we know we've been lied to about nine eleven we don't know for sure who did it we don't know exactly how they did everything and that's why we need a new investigation to find out but in the meantime there are things we do know we do know that there was a massive cover up that there was evidence hidden and destroyed and given his conclusion what remedy do these professionals recommend the faction i live in truth that's what we're asking for is we're asking for investigation that follows national standards i'm told to gibbs i was licensed for a general building and heavy construction as well as architecture over thirty five years ago i was educated at yale university the harvard graduate school of design the yale graduate school of art in architecture and i taught at mit as an adjunct faculty for a number of years in the graduate school of architecture my reasons for looking and demanding and urging people to see that we get a judicial investigation are really very simple no highrise steel structure has ever been destroyed by a fire in the history of construction we have eyewitness testimony of firemen policemen news reporters and occupants of the building two explosions and enormous number of eyewitness testimonies fourth the buildings fall at a speed which can only occur if the structure has been removed the vertical structure large multitude on beams were hurled hundreds of yards laterally gravity works vertically not laterally we also now have the evidence of thermite in thermite explosives most of these things were not even mentioned in the nine eleven commission report it's for this reason i urge all architects and engineers to look into the matter look at the evidence that is available and sign on to the demands of architects and engineers for nine eleven truth in demanding that we get a judicial petition for architects and engineers for nine eleven truth because i felt it was an organization trying to get it at the truth of what in fact actually happened what brought those buildings down so what i'm looking for is is a new investigation where all of the original information and hypotheses are reexamined as well as the ones that have surface since the new ones including the allegations of control demolition i don't think any of us are pointing fingers at this time we're just saying let's reopen it let's look at objectively let's look at the evidence not these fabricated computer models and hearsay and all these pre determined conclusions let's really open it up again and investigate this thing properly and then come to conclusions in my thirty seven years of experience as a structural engineer i've never seen modes of failure such as are been exhibited in the case of these buildings and that's why i feel that we need a new independent investigation to explain the destruction of these three buildings i strongly support a an independent investigation into what actually occurred there are many problems and in fact as a forensic engineer i can tell you that unfortunately the government has destroyed much of the evidence so we could do an appropriate investigation and i'm asked an investigation could be done that would be independent of the government independent of all of the influences that obviously were in effect during the nest investigation based on that didn't surveil will i feel that we must demand a new investigation into the destruction of the world trade center towers and nist itself we need to have an investigation in this themselves i believe that the reports that came out are not true i believe there's a lot of and a lot of information i was emitted blatantly or or otherwise i strongly feel that  community we have a professional responsibility and i reach every engineer and architect and demolitions expert and anybody that has any knowledge in this field to examine the evidence and stand up and become because the rest of the world is depending on us i would like to see a real investigation i'd like to see i'd like to see people on the inside who really know what they're what happened i'd like to see some of those come out there are some very good scientists i'm sure yes and their life's work is getting distorted and used for political purposes what happened on nine eleven is not something that is just going to go away this is very pertinent to us today i wish to further the investigation and i want to make a difference because i want this to be a safe and better place for my children i signed the petition on the architect and engineers nine eleven truth website mainly because i wanted to stand behind the families that lost people on nine eleven the nine eleven truth movement was started by the families that lost loved ones on that day and they were all out there alone screaming for help and our own country was ignoring them and nor in their needs and taking care of them the way we should have to that happened  we have not been told the truth we deserve the truth and sort of the victims we need to come together again as a country and believe that this one a vet split our country in half and the only way we're going to come back together is to reopen