watch the camera shake on its tripod as a large energy source rocks the ground nine seconds later the no i heard like an explosion and then a cracking type of noise and then it sounded like a freight train rumbling and picking up speed i looked up and i saw it coming down as i came out of the north tower everything started trembling under my feet like an earthquake the only thing i saw was a fire truck i ran towards the fire truck and slid right under when the building started to collapse right on top of the fire truck across the hudson river richard segal was filming an astonishing day the sound meter of richard's camera caught something fairly significant adjusted for the distance and fog as sound travels more slowly than what we see the camera registered multiple explosions in the towers  let's look carefully at the collapse itself noticed the puffs of concrete issuing from the side of the building well ahead of the collapse way called squibs in demolition language these are actually charges firing visibly through the exterior as gravity pulls the building down well ahead of the collapse way the twin towers each consisted of three multi story buildings set on top of one another to sustain the weight of so many floors the sky lobbies had to be extra heavily reinforced watch a big squid coming from the sky of the noise kept coming and coming and one second i was running and the next second i was flying just i had no control over my feet no choice as to what direction i was going i was in the air and it seemed like  first this is the shockwave blast as it knocks the tower next  is the term for low density debris clouds that sweep across land in even water in the wake of a volcanic eruption note the dust clouds pushing between the buildings and over the hudson river typical of plastics are both cane owes produce the same kind of fix cutting ashen debris following a massive release of energy a huge internal explosion th surge left a blanket of dust on the streets of manhattan like a winter blizzard fine dust particles hung grainy in the air the towers were literally pulverized rendered into ash in clouds of powder created in mid air with jet fuel fires and collapsing floors result in this otherworldly scene on the southern tip of manhattan surrounded by water huge retaining walls were built below the world trade center to hold back the ocean and hudson river the bath tub as it was called seven levels of parking garages maintenance rooms and the new jersey path train station after september eleventh the three foot thick slurry walls were found to have shifted up to eighteen inches inward one hundred ten floors but something happened in the subbasements to disrupt them all the collapse of going down the track level so we had sixty seventy feet of wall totally unsupported what kind of force could have just large so many stories deep underground physics professor steven jones of brigham young university published a twenty five page treatise on the collapse of the twin towers and building seven applying the laws of physics to the official story from an interview on c as we read in the femur report it says here and i put this in my paper of course the best hypothesis which is the only one they looked at the fire has only a low probability of occurrence direct evidence for the use of high temperature explosives such as thermite thermite produces molten iron as an end product ok we appreciate your coming on not if i don't understand your theories it try to explain thanks professor jones barely got in his mention of thermite and incendiary used by the military there might is a compound of iron oxide in aluminum which when ignited sustains an extreme heat reaction creating molten iron in just two seconds there might can reach temperatures over forty five hundred degrees fahrenheit quite enough to liquify steel this is thermite melting the engine of a car we know that open air fires can not burn hot enough to melt steel but metal had melted at the big of the watch this very bright substance pouring from the eighty first floor of the south tower and white smoke appeared at the base of the building would this be aluminum oxide the byproduct of a thermite reaction appendix c of the femur report describes sulfur re on the world trade center steel the new york times called this the deepest mystery of all cell first slightly lower as the melting point of iron and iron oxide and iron self i had formed on the surface of the let's look at what happens in the demolition industry taking down large structures requires preparation powerful explosives and heavy equipment are used in advance to weaken the foundation and bottom sections of a building before additional explosives and gravity bring the rest of it down the words of his senior blaster we blow the basement all the columns in the basement then we crack it up at the top to get it started we go every other floor all the way down every explosive has a timer on it that's why it's controlled when the columns go each floor goes down and impacts the one below and keeps going here's what demolition expert with the use of delays we can control pretty much where the debris lands controlled vibration we control noise levels timing delays are the key to just about everything in our business cut it all down to a science just because where the underground explosions intended to blow out the twin towers basements followed by blasts heard inside the buildings of shaped charges slicing demolition pre weakening usually takes place well in advance of the final blast but at the world trade center critical prep work might have had to occur in a very compressed timeframe in the panicked aftermath of the plane str these core columns were discovered after the collapse the angled cut occurs in exactly the manner that shaped charges slice through steel beams to control the way they fall which through a series of pins cut at the same angle will tend to make the building fifty over and walk let's look at the rubble to one hundred ten story buildings brought to the ground in a seven story crater lie over a million tons of debris had to basements not been blown out where would the rubble have gone heaped on the ground ready to slide and still the art of controlled demolition honest with you we arrived on late monday night and went into action on tuesday morning but not told today did we get a full opportunity to work the entire site other than a spot of church and day to which we would the boy and i really don't want to say right now peter i think it's going to be i saw people jumping out of the world trade center i saw some of the firefighters who i know going into the building so and we were in a building in which we were trapped for  about fifteen minutes and we set up headquarters at seventy five barclay street which is right there with the police commissioner the fire commissioner the head of emergency management and we were operating out of there when we were told that the world trade center was going to collapse the world trade center was going to collapse  similarly larry silverstein new leaseholder of the world trade center seems to have stated that a decision was made to pull building seven by the end of the day the last truck to the world trade center complex let's hear mr silverstein's actual words delivered for our benefit in the two thousand and two p b s documentary america rebuilds their member getting a call from the fire department commander telling me that they were not sure they're going to be able to contain it drop straight down then watch demolition dynamics attempt a big blast and from ground zero stone post disaster wrecking crew by mid december the department of design and construction had level world trade center buildings four and five commercial real estate tycoon with international political connections acquired in one thousand nine year lease on the world trade center complex in the spring of two thousand and one throughout the summer he reworked the insurance policies on his new property making sure that it was covered acts of terrorism explicit in the lease agreement was silverstein's right to rebuild the complex if it were destroyed after nine eleven mr silverstein fought his insurers in court to obtain double his policy limits for the destruction of his property maintaining that the double hijacking constituted two disasters caused by terrorists not just one he collected over eight billion dollars it's a magnificent return on his original fourteen million dollar investment my first reaction is to think about the families of those people the tragedy the magnitude of it  however i firmly believe that we should rebuild just in the last year stack of the number building building number seven one of the building support of the world trade center towers collapsed world trade seven functioning as the command center for the complex housed giant diesel backup an oxygen system in the mayor's protected emergency bunker and office for the cia secret service department of defense and securities and exchange commission its other tenants were insurance companies broke ages and banks no plane hit building seven but at five twenty p m on september eleventh it collapsed in a heap on the ground some damage to building seven is said to have been caused by debris from tower one though this new york times article tells us building seven burned like a giant torch the only visuals that exist are of unidentified smoke and a few small fire compared this to the wallop sustained by world trade center three four five and six positioned right below the towers damage to the surrounding world trade center buildings they said hey you know but you got to stay behind this line because they're thinking about taking this building down they're not sure if it's a stable or not so they will hold the line up because they had knowledge that something was going to  of just a terror completely closed off as the rescue workers try to do their job but this isn't the first building that time has suffered as a result we know that part of the marriott hotel next to the world trade center also collapsed as a result of this huge amount of falling debt free from one hundred ten floors of two the two twin towers of the world trade center as you can see behind me the trade center appears to be still burning we see these huge clouds of smoke and we know that behind that there's an empty piece of what was a very familiar new york skyline a symbol of the financial prospect at this city but so comple ok disappeared now and new york is still unable to take on board what has happened to them today presumably there were very few people in the solomon building when it collapsed i mean a forty seven story skyscraper building seven folded neatly in six and a half second textbook to stand right into its footprint silverstein properties now tells us that its owner was referring to the team of firefighters inside the building when he spoke of the decision to pull pulling the firemen out of harm's way however there were no firefighters building seven according to fema and i  this is a photo taken one second in the building seven collapsed noticed the crown if we look at other controlled demolitions we see that they first blow one of the central columns so the building falls in on itself if you don't do this the building falls outward and can damage surrounding structures building seven had a classic cramp or wedge its central column was blown out first so it didn't structurally damaged buildings just a few feet away from remember the mayor's emergency bunker ensconced on the twenty third floor of building seven it was retrofitted with super glass water oxygen and its own generator but mayor giuliani chose to find emergency shelter elsewhere on september eleventh wide building seven its structure was heavily reinforced as the w t c command center was at the hub for the nine eleven  also in six and a half seconds last forever where thousands of f c c case files on corporate fraud including those relating to the notorious activities of giants world com and enron a few indictments for stock fraud but what of the seventy billion dollar california electricity swindle disappear one died in the collapse of building seven it was j k did well in advance of its implosion but not the twin towers why weren't police firemen and civilians in these buildings told what to expect tragically employees in the towers were advised to return to their offices the announcement came on that everything was fine tower one they were evacuating but tower two was fine and we could go back to our offices not return to the eighty first floor then i just have the race my head looking straight towards us tried to liberty and what i saw was the south tower was hit between a seventy eight and eighty fourth floors were trapped on the eighty first floor by crushing debris stanley was rescued by brian clark were slowly and painfully they made their way down  a stairwell to freedom outside stanley had a feeling of uncanny pression super what was to come and we peered through the railing up through the trees at the tower and stanley said you know i think that could come down and i don't know why i'm telling this man this building is gone but i knew it was not over so there's no way that's a steel structure that's just draperies and carpets and furniture burn and you know there's no way i didn't finish my sentence when the tower started to slide and i can still remember him right first of all this bull explosion all we're blessed with intuition or foresight joseph malana which reached his son greg by cell phone greg at that time i could tell by his voice was scared i he said to me dad can you get in touch with someone and tell them that this about twenty of us on the northeast corner of the ninety third floor greg had been about to leave the south tower after the north tower was attacked was told it was safer to return to his desk couple of times he said why did i listen why did i listen the director in the company that provided electronic security for the world trade center and washington's dulles airport both involved in september eleventh none other than the president's younger brother hundred ninety six to two thousand and secure com installed what was referred to as a new security system at the world trade center where it d walker the third a cousin of the bush brothers was c e o of secure c hundred ninety nine until two thousand and two interesting the these facts have not been made public was it only a security system that was added during those years or was it also the wiring for a long awaited plan scott ford's and i t specialist in a firm that had leased space in the south tower since its erection reported an unprecedented power down in his fielding for almost the whole weekend prior to nine eleven we were no really doing all the power was charged out if there was a power down that main got everything was gone in terms of security in terms of access to the building so anybody could have gone there doing any kind of set  having worked overtime to get his company's servers back up scott took the day ah us on september eleventh as he watched the towers collapse from new jersey that morning he was sure this had been the purpose of the mysterious weekend w got notified many off thora team including the nine eleven commission about the unusual and lengthy power outage but was ignored then fountain a fireman's fund spoke of unusual evacuations ordered at the twin towers during the weeks before september eleventh others reported that a security alert was inexplicably lifted five days prior and bomb sniffing dogs were removed what would the dogs have discovered and they remained not long after the disaster lower manhattan saw banners like this one although they were idolized as cathedral like symbols of power and triumph that pierced the new york skyline the twin towers were big money losers for the port authority of new york they cost millions a year to equip with the basics electricity water heat air conditioning sewage and even oxygen being air tight as modern communications connected traders from all corners of the globe tendency in the twin towers continue to drop the towers presented  decades ago their steel beams had been sprayed with fireproof asbestos a cancer causing material banned from use in building in the mid one nine hundred eighty s although the world trade center complex was given several waivers it was expected to clean up its act but to remove the asbestos from every supporting beam in the twin towers would have been almost undoable quotes for this cleanup ran over a billion and no insurance company was willing to bear the c and urban renewal project of unfathomable proportions given the towers issues and problems september eleventh proved an unexpected bonanza the trade center was built in the one nine hundred sixty s to revive a the suffocating dust that engulfed manhattan was much more than dust it was pulverized concrete glass metals containing lead mercury dioxins benzene and of course asbestos none of that was healthy for any living thing today thousands of rescue workers have developed lung cancer and serious permanent health conditions and the rescue dogs continue to die what you had was a ground level municipal incinerator that smoldered for months burning up the most heavily computerized building in the world patients have had black paste coming out of their pores they have reported doll movements that are blue or green and have smelled like smoke despite the fact that they have not been in a fire same for months only three days after september eleventh washington instructed the e p a to declare manhattan safe and reopen wall street though the air remained talks like a federal judge is blocking the former head of the environmental protection agency for telling new yorkers  we're safe to return to their homes and offer good near ground zero to one after the nine eleven attacks the judge called christine todd whitman to action quote conscious shocking and refused to grant her and it was documented that the white house order as best just plays a part in the myth of why the twin towers fell on september eleventh the steel had been sprayed with a lightweight fireproof foam which while cheaper was much less had he seen the new york  times has reported that the foam fell off easily and the port authority had been fixing and replacing missing the sections in the months before september eleventh but even if the fireproofing had been perfectly applied the impact of the plane crashing into the north tower was so powerful it simply blew most of it off allowing the fire to attack the steel bunny once the plane set whatever condition it was in before the fact made no difference because  here the history channel tells us how do you two poor fireproofing flames swept through the pockets between floors as much of the fireproofing had been dislodged on impact the flames were attacking unprotected steel when steel is not protected the strength reduces very fast when you get to about eleven hundred degrees fahrenheit you lose about half the strength of t the fire inside the towers may have reached temperatures of twenty five hundred degrees fahrenheit i don't go at times has reported what happened to those steel floor trusses then the steel did heat out and it became softer and softer almost years ago the steel used to build the world trade center was certified by underwriters laboratories a global product compliance and public safety guardian let's hear a lone voice that spoke out from this enormous research and found some very disturbing tracks including that if you had been destroyed precedented manner once i discover those facts i sent a written question to you will see asking him about these things and what he was doing to protect our reputation as a company he replied in writing to me that you did in fact test the steel you talked about the quality of the sample and how well it had performed on the test and he said the company had tested the steel in that it had done beautifully after that he asked me to be patient and wait for the end i have to report because you i was working closely with them i saw this report in october of two thousand and four and in november i sent my letter to  yesterday asking for clarification i felt it was an obligation on my part to ask the question since no one else seemed to care to have to nine hundred ninety three bombing the fireproofing in both buildings was upgraded considerably but when you look at the end i have to report you don't see any testing that show that a seven sixty seven was widely dislodging the fireproofing under any impact so far from the point of impact so now we've been left with a new theory that i really a theory at all but only a collection of vague statements and i asked to report represents what can really only be called anti science they started with their conclusions and work their way back to some leading hypotheses when the results of the physical test showed that the temperatures were far too low to soften steel and that the floors could not have collapsed and that the fireproofing could not have been widely dislodged ignore these results and don't a black box computer model that no one can argue with and that w out the right answers today anyone who is conscious enough to know what's happening in the world knows that most government policy is being driven by this false story known as the perpetrators of this attack this is being seen on capitol hill as another pearl harbor as another pearl harbor is another pearl harbor the steel in dragon like lengthen contortion and architects engineers people who work with steel welders have just never seen the level of destruction and the level of defamation of this material in our lives it is true that heat exp steel in a fire steel members may swell and bend slightly but this how could these huge tangles have been created the steel below the towers had melted at many thousands of degrees since metal conducts heat with these twisted remains formed by high temperatures wicking their way through a gr explosives also deform steel as they fire gas pushes outward the force of the gas can easily bend a large steel c you don't find a chair you don't and a telephone a computer the biggest piece of a telephone i found was half of the keypad and it was about this big in eight hundred eighty six for gold miners lost their lives in an underground explosion the bodies of these four men were brought to the surface and one barrel the biggest piece recovered was part of  september eleventh left over eleven hundred bodies unaccounted for at ground zero this was found inside a length of steel and before they seal the self the sheetrock and all the building materials for me here face the workers with the right put your hands in the newspaper that we found in new york times paper secrets cannot be kept for ever just as that newspaper from one thousand nine hundred sixty nine revealed itself to us decades later we will someday know the inside of september eleventh the reasons for the staging of such a production go far back into time insurance policies covered nearly everything in the world trade center that was destroyed but what if certain commodities could be moved in the nick of time gold and silver held by commercial banks and the comex exchange is said to have been stored beneath ground zero a single catch belonging to the bank of nova scotia was a night and made public was there and was it removed remains a question as last survivor william rodriguez climbed the stairwell to rescue people he remembers a very strange thing as i stood there on the thirty third floor i have very strange noises on the thirty four floor now the thirty fourth floor was an empty floor floored that the not half and kind of walls or it was a construction floor he was totally hollowed out there was nothing there and i heard very heavy equipment be around and it sounded like a dumpsters with the metal wheels be moved around and i got scared because i knew it was an empty floor nobody was supposed to be there as a matter of fact not even the elevators stopped there you have to have a special access ski to open the door on the thirty four floor so to find that there was strange noises there and i continue actually bypassing that floor because i didn't dare to open the door exoskeleton had something been placed around the edge of the building holes have been drilled to contain it was the dust in those final days a telltale sign as white elephants the buildings were full of fake and office space tenants could be temporarily moved around for upgrades as a on was and a plan arranged to perfection was a strange construction that could be heard but not seen going on all over the towers mary silverstein took possession six weeks before september eleventh when a strange construction began where the sounds that scared william rodriguez the last of the rats as they left this woman was not so fortunate she is nine eleven if engine i am calling soundlessly to people who could not help christopher hanley trapped with one hundred people on the hundred sixth floor of let's not forget these people whose fate on this day was decided for them as we know secrets cannot be kept for ever