by Dr. David Ray Griffin
Authorized Version (with references / notes)
In The New Pearl Harbor:  	Disturbing Questions about the Bush Administration and 9/11 (2004), I  	summarized dozens of facts and reports that cast doubt on the official story  	about 9/11. Then in The 9/11 Commission Report: Omissions and Distortions  	(2005a), I discussed the way these various facts and reports were treated by  	the 9/11 Commission, namely, by distorting or simply omitting them. I have  	also taken this big-picture approach, with its cumulative argument, in my  	previous essays and lectures on 9/11 (Griffin, 2005b and 2005d).[1] This  	approach, which shows every aspect of the official story to be problematic,  	provides the most effective challenge to the official story.
But this way of presenting the  	evidence has one great limitation, especially when used in lectures and  	essays: It means that the treatment of every particular issue must be quite  	brief, hence superficial. People can thereby be led to suspect that a more  	thorough treatment of any particular issue might show the official story to  	be plausible after all.
In the present essay, I focus on one  	question: why the Twin Towers and building 7 of the World Trade Center  	collapsed. One advantage of this focus, besides the fact that it allows us  	to go into considerable detail, is that the destruction of the World Trade  	Center provides one of the best windows into the truth about 9/11. Another  	advantage of this focus is that it will allow us to look at revelations  	contained in the 9/11 oral histories, which were recorded by the New York  	Fire Department shortly after 9/11 but released to the public only in August  	of 2005.
I will begin with the question of  	why the Twin Towers collapsed, then raise the same question about building  	7.
1. The Collapse of the Twin  	Towers
Shortly after 9/11, President Bush  	advised people not to tolerate “outrageous conspiracy theories about the  	attacks of 11 September” (Bush, 2001).[2] Philip Zelikow, who directed the  	work of the 9/11 Commission, has likewise warned against “outrageous  	conspiracy theories” (Hansen, 2005). What do these men mean by this  	expression? They cannot mean that we should reject all conspiracy theories  	about 9/11, because the government’s own account is a conspiracy theory,  	with the conspirators all being members of al-Qaeda. They mean only that we  	should reject outrageous theories.
But what distinguishes an outrageous  	theory from a non-outrageous one? This is one of the central questions in  	the philosophy of science. When confronted by rival theories---let’s say  	Neo-Darwinian Evolution and Intelligent Design---scientists and philosophers  	of science ask which theory is better and why. The mark of a good theory is  	that it can explain, in a coherent way, all or at least most of the relevant  	facts and is not contradicted by any of them. A bad theory is one that is  	contradicted by some of the relevant facts. An outrageous theory would be  	one that is contradicted by virtually all the relevant facts.
With this definition in mind, let us  	look at the official theory about the Twin Towers, which says that they  	collapsed because of the combined effect of the impact of the airplanes and  	the resulting fires. The report put out by FEMA said: “The structural damage  	sustained by each tower from the impact, combined with the ensuing fires,  	resulted in the total collapse of each building” (FEMA, 2002).[3] This  	theory clearly belongs in the category of outrageous theories, because is it  	is contradicted by virtually all the relevant facts. Although this statement  	may seem extreme, I will explain why it is not.
No Prior Collapse Induced by  	Fire
The official theory is rendered  	implausible by two major problems. The first is the simple fact that fire  	has never---prior to or after 9/11---caused steel-frame high-rise buildings  	to collapse. Defenders of the official story seldom if ever mention this  	simple fact. Indeed, the supposedly definitive report put out by NIST---the  	National Institute for Standards and Technology (2005)---even implies that  	fire-induced collapses of large steel-frame buildings are normal events  	(Hoffman, 2005).[4] Far from being normal, however, such collapses have  	never occurred, except for the alleged cases of 9/11.
Defenders of the official theory, of  	course, say that the collapses were caused not simply by the fire but the  	fire combined with the damage caused by the airliners. The towers, however,  	were designed to withstand the impact of airliners about the same size as  	Boeing 767s.[5] Hyman Brown, the construction manager of the Twin Towers,  	said: “They were over-designed to withstand almost anything, including  	hurricanes, . . . bombings and an airplane hitting [them]” (Bollyn, 2001).  	And even Thomas Eagar, an MIT professor of materials engineering who  	supports the official theory, says that the impact of the airplanes would  	not have been significant, because “the number of columns lost on the  	initial impact was not large and the loads were shifted to remaining columns  	in this highly redundant structure” (Eagar and Musso, 2001, pp. 8-11).  	Likewise, the NIST Report, in discussing how the impact of the planes  	contributed to the collapse, focuses primarily on the claim that the planes  	dislodged a lot of the fire-proofing from the steel.[6]
The official theory of the collapse,  	therefore, is essentially a fire theory, so it cannot be emphasized too much  	that fire has never caused large steel-frame buildings to collapse---never,  	whether before 9/11, or after 9/11, or anywhere in the world on 9/11 except  	allegedly New York City---never.
One might say, of course, that there  	is a first time for everything, and that a truly extraordinary fire might  	induce a collapse. Let us examine this idea. What would count as an  	extraordinary fire? Given the properties of steel, a fire would need to be  	very hot, very big, and very long-lasting. But the fires in the towers did  	not have even one of these characteristics, let alone all three.
There have been claims, to be sure,  	that the fires were very hot. Some television specials claimed that the  	towers collapsed because the fire was hot enough to melt the steel. For  	example, an early BBC News special quoted Hyman Brown as saying: “steel  	melts, and 24,000 gallons of aviation fluid melted the steel.” Another man,  	presented as a structural engineer, said: “It was the fire that killed the  	buildings. There’s nothing on earth that could survive those temperatures  	with that amount of fuel burning. . . . The columns would have melted”  	(Barter, 2001).[7]
These claims, however, are absurd.  	Steel does not even begin to melt until it reaches almost 2800°  	Fahrenheit.[8] And yet open fires fueled by hydrocarbons, such as  	kerosene---which is what jet fuel is---can at most rise to 1700°F, which is  	almost 1100 degrees below the melting point of steel.[9] We can,  	accordingly, dismiss the claim that the towers collapsed because their steel  	columns melted.[10]
Most defenders of the official  	theory, in fact, do not make this absurd claim. They say merely that the  	fire heated the steel up to the point where it lost so much of its strength  	that it buckled.[11] For example, Thomas Eagar, saying that steel loses 80  	percent of its strength when it is heated to 1,300°F, argues that this is  	what happened. But for even this claim to plausible, the fires would have  	still had to be pretty hot.
But they were not. Claims have been  	made, as we have seen, about the jet fuel. But much of it burned up very  	quickly in the enormous fireballs produced when the planes hit the  	buildings, and rest was gone within 10 minutes,[12] after which the flames  	died down. Photographs of the towers 15 minutes after they were struck show  	few flames and lots of black smoke, a sign that the fires were  	oxygen-starved. Thomas Eagar, recognizing this fact, says that the fires  	were “probably only about 1,200 or 1,300°F” (Eagar, 2002).
There are reasons to believe,  	moreover, that the fires were not even that hot. As photographs show, the  	fires did not break windows or even spread much beyond their points of  	origin (Hufschmid, 2002, p. 40). This photographic evidence is supported by  	scientific studies carried out by NIST, which found that of the 16 perimeter  	columns examined, “only three columns had evidence that the steel reached  	temperatures above 250°C [482°F],” and no evidence that any of the core  	columns had reached even those temperatures (2005, p. 88).
NIST (2005) says that it “did not  	generalize these results, since the examined columns represented only 3  	percent of the perimeter columns and 1 percent of the core columns from the  	fire floors”. That only such a tiny percent of the columns was available was  	due, of course, to the fact that government officials had most of the steel  	immediately sold and shipped off. In any case, NIST’s findings on the basis  	of this tiny percent of the columns are not irrelevant: They mean that any  	speculations that some of the core columns reached much higher temperatures  	would be just that---pure speculation not backed up by any empirical  	evidence.
Moreover, even if the fire had  	reached 1,300°F, as Eagar supposes, that does not mean that any of the steel  	would have reached that temperature. Steel is an excellent conductor of  	heat. Put a fire to one part of a long bar of steel and the heat will  	quickly diffuse to the other parts and to any other pieces of steel to which  	that bar is connected.[13]
For fires to have heated up some of  	the steel columns to anywhere close to their own temperature, they would  	have needed to be very big, relative to the size of the buildings and the  	amount of steel in them. The towers, of course, were huge and had an  	enormous amount of steel. A small, localized fire of 1,300°F would never  	have heated any of the steel columns even close to that temperature, because  	the heat would have been quickly dispersed throughout the building.
Some defenders of the official story  	have claimed that the fires were indeed very big, turning the buildings into  	“towering infernos.” But all the evidence counts against this claim,  	especially with regard to the south tower, which collapsed first. This tower  	was struck between floors 78 and 84, so that region is where the fire would  	have been the biggest. And yet Brian Clark, a survivor, said that when he  	got down to the 80th floor: "You could see through the wall and the cracks  	and see flames . . . just licking up, not a roaring inferno, just quiet  	flames licking up and smoke sort of eking through the wall."[14] Likewise,  	one of the fire chiefs who had reached the 78th floor found only “two  	isolated pockets of fire.”[15]
The north tower, to be sure, did  	have fires that were big enough and hot enough to cause many people to jump  	to their deaths. But as anyone with a fireplace grate or a pot-belly stove  	knows, fire that will not harm steel or even iron will burn human flesh.  	Also in many cases it may have been more the smoke than the heat that led  	people to jump.
In any case, the fires, to weaken  	the steel columns, would have needed to be not only very big and very hot  	but also very long-lasting.[16] The public was told that the towers had such  	fires, with CNN saying that “very intense” fires “burned for a long  	time.”[17] But they did not. The north tower collapsed an hour and 42  	minutes after it was struck; the south tower collapsed after only 56  	minutes.
To see how ludicrous is the claim  	that the short-lived fires in the towers could have induced structural  	collapse, we can compare them with some other fires. In 1988, a fire in the  	First Interstate Bank Building in Los Angeles raged for 3.5 hours and gutted  	5 of this building’s 62 floors, but there was no significant structural  	damage (FEMA, 1988). In 1991, a huge fire in Philadelphia’s One Meridian  	Plaza lasted for 18 hours and gutted 8 of the building’s 38 floors, but,  	said the FEMA report, although “[b]eams and girders sagged and twisted . . .  	under severe fire exposures. . . , the columns continued to support their  	loads without obvious damage” (FEMA, 1991). In Caracas in 2004, a fire in a  	50-story building raged for 17 hours, completely gutting the building’s top  	20 floors, and yet it did not collapse (Nieto, 2004). And yet we are  	supposed to believe that a 56-minute fire caused the south tower to  	collapse.
Unlike the fires in the towers,  	moreover, the fires in Los Angeles, Philadelphia, and Caracas were hot  	enough to break windows.
Another important comparison is  	afforded by a series of experiments run in Great Britain in the mid-1990s to  	see what kind of damage could be done to steel-frame buildings by subjecting  	them to extremely hot, all-consuming fires that lasted for many hours. FEMA,  	having reviewed those experiments, said: “Despite the temperature of the  	steel beams reaching 800-900°C (1,500-1,700°F) in three of the tests. . . ,  	no collapse was observed in any of the six experiments” (1988, Appendix A).
These comparisons bring out the  	absurdity of NIST’s claim that the towers collapsed because the planes  	knocked the fireproofing off the steel columns. Fireproofing provides  	protection for only a few hours, so the steel in the buildings in  	Philadelphia and Caracas would have been directly exposed to raging fires  	for 14 or more hours, and yet this steel did not buckle. NIST claims,  	nevertheless, that the steel in the south tower buckled because it was  	directly exposed to flames for 56 minutes.[18]
A claim made by some defenders of  	the official theory is to speculate that there was something about the Twin  	Towers that made them uniquely vulnerable to fire. But these speculations  	are not backed up by any evidence. And, as Norman Glover, has pointed out:  	“[A]lmost all large buildings will be the location for a major fire in their  	useful life. No major high-rise building has ever collapsed from fire. The  	WTC was the location for such a fire in 1975; however, the building survived  	with minor damage and was repaired and returned to service” (Glover, 2002).
Multiple Evidence of  	Controlled Demolition
There is a reverse truth to the fact  	that, aside from the alleged cases of 9/11, fire has never caused large  	steel-frame buildings to collapse. This reverse truth is that every previous  	total collapse has been caused by the procedure known as “controlled  	demolition,” in which explosives capable of cutting steel have been placed  	in crucial places throughout the building and then set off in a particular  	order. Just from knowing that the towers collapsed, therefore, the natural  	assumption would be that they were brought down by explosives.
This a priori assumption is,  	moreover, supported by an empirical examination of the particular nature of  	the collapses. Here we come to the second major problem with the official  	theory, namely, that the collapses had at least eleven features that would  	be expected if, and only if, explosives were used. I will briefly describe  	these eleven features.
Sudden Onset: In controlled  	demolition, the onset of the collapse is sudden. One moment, the building is  	perfectly motionless; the next moment, it suddenly begins to collapse. But  	steel, when heated, does not suddenly buckle or break. So in fire-induced  	collapses---if we had any examples of such---the onset would be gradual.  	Horizontal beams and trusses would begin to sag; vertical columns, if  	subjected to strong forces, would begin to bend. But as videos of the towers  	show,[19] there were no signs of bending or sagging, even on the floors just  	above the damage caused by the impact of the planes. The buildings were  	perfectly motionless up to the moment they began their collapse.
Straight Down: The most important  	thing in a controlled demolition of a tall building close to other buildings  	is that it come straight down, into, or at least close to, its own  	footprint, so that it does not harm the other buildings. The whole art or  	science of controlled demolition is oriented primarily around this goal. As  	Mark Loizeaux, the president of Controlled Demolition, Inc., has explained,  	“to bring [a building] down as we want, so . . . no other structure is  	harmed,” the demolition must be “completely planned,” using “the right  	explosive [and] the right pattern of laying the charges” (Else, 2004).[20]  	If the 110-story Twin Towers had fallen over, they would have caused an  	enormous amount of damage to buildings covering many city blocks. But the  	towers came straight down. Accordingly, the official theory, by implying  	that fire produced collapses that perfectly mimicked the collapses that have  	otherwise been produced only by precisely placed explosives, requires a  	miracle.[21]
Almost Free-Fall Speed: Buildings  	brought down by controlled demolition collapse at almost free-fall speed.  	This can occur because the supports for the lower floors are destroyed, so  	that when the upper floors come down, they encounter no resistance. The fact  	that the collapses of the towers mimicked this feature of controlled  	demolition was mentioned indirectly by The 9/11 Commission Report, which  	said that the “South Tower collapsed in 10 seconds” (Kean and Hamilton,  	2004, p. 305).[22] The authors of the report evidently thought that the  	rapidity of this collapse did not conflict with the official theory, known  	as the “pancake” theory. According to this theory, the floors above the  	floors that were weakened by the impact of the airliner fell on the floor  	below, which started a chain reaction, so that the floors “pancaked” all the  	way down.
But if that is what happened, the  	lower floors, with all their steel and concrete, would have provided  	resistance. The upper floors could not have fallen through them at the same  	speed as they would fall through air. However, the videos of the collapses  	show that the rubble falling inside the building’s profile falls at the same  	speed as the rubble outside[23] (Jones, 2006). As architect and physicist  	Dave Heller (2005) explains:
the floors could not have been  	pancaking. The buildings fell too quickly. The floors must all have been  	falling simultaneously to reach the ground in such a short amount of time.  	But how?. . . In [the method known as controlled demolition], each floor of  	a building is destroyed at just the moment the floor above is about to  	strike it. Thus, the floors fall simultaneously, and in virtual freefall.  	(Garlic and Glass 6)
Total Collapse: The official theory  	is even more decisively ruled out by the fact that the collapses were total:  	These 110-story buildings collapsed into piles of rubble only a few stories  	high. How was that possible? The core of each tower contained 47 massive  	steel box columns.[24] According to the pancake theory, the horizontal steel  	supports broke free from the vertical columns. But if that is what had  	happened, the 47 core columns would have still been standing. The 9/11  	Commission came up with a bold solution to this problem. It simply denied  	the existence of the 47 core columns, saying: “The interior core of the  	buildings was a hollow steel shaft, in which elevators and stairwells were  	grouped” (Kean and Hamilton, 2004, 541 note 1). Voila! With no 47 core  	columns, the main problem is removed.
The NIST Report handled this most  	difficult problem by claiming that when the floors collapsed, they pulled on  	the columns, causing the perimeter columns to become unstable. This  	instability then increased the gravity load on the core columns, which had  	been weakened by tremendously hot fires in the core, which, NIST claims,  	reached 1832°F, and this combination of factors somehow produced “global  	collapse” (NIST, 2005, pp. 28, 143).
This theory faces two problems.  	First, NIST’s claim about tremendously hot fires in the core is completely  	unsupported by evidence. As we saw earlier, its own studies found no  	evidence that any of the core columns had reached temperatures of even 482°F  	(250°C), so its theory involves a purely speculative addition of over  	1350°F.[25] Second, even if this sequence of events had occurred, NIST  	provides no explanation as to why it would have produced global—-that is,  	total--collapse. The NIST Report asserts that “column failure” occurred in  	the core as well as the perimeter columns. But this remains a bare  	assertion. There is no plausible explanation of why the columns would have  	broken or even buckled, so as to produce global collapse at virtually  	free-fall speed, even if they had reached such temperatures.[26]
Sliced Steel: In controlled  	demolitions of steel-frame buildings, explosives are used to slice the steel  	columns and beams into pieces. A representative from Controlled Demolition,  	Inc., has said of RDX, one of the commonly used high explosives, that it  	slices steel like a "razor blade through a tomato." The steel is, moreover,  	not merely sliced; it is sliced into manageable lengths. As Controlled  	Demolition, Inc., says in its publicity: “Our DREXSTM systems . . . segment  	steel components into pieces matching the lifting capacity of the available  	equipment.”[27]
The collapses of the Twin Towers, it  	seems, somehow managed to mimic this feature of controlled demolitions as  	well. Jim Hoffman (2004), after studying various photos of the collapse  	site, said that much of the steel seemed to be “chopped up into . . .  	sections that could be easily loaded onto the equipment that was cleaning up  	Ground Zero.”[28]
Pulverization of Concrete and Other  	Materials: Another feature of controlled demolition is the production of a  	lot of dust, because explosives powerful enough to slice steel will  	pulverize concrete and most other non-metallic substances into tiny  	particles. And, Hoffman (2003) reports, “nearly all of the non-metallic  	constituents of the towers were pulverized into fine power.”[29] That  	observation was also made by Colonel John O’Dowd of the U.S. Army Corps of  	Engineers. “At the World Trade Center sites,” he told the History Channel,  	“it seemed like everything was pulverized” (History Channel, 2002).
This fact creates a problem for the  	official theory, according to which the only energy available was the  	gravitational energy. This energy would have been sufficient to break most  	of the concrete into fairly small pieces. But it would not have been  	anywhere close to the amount of energy needed to turn the concrete and  	virtually all the non-metallic contents of the buildings into tiny particles  	of dust.
Dust Clouds: Yet another common  	feature of controlled demolitions is the production of dust clouds, which  	result when explosions eject the dust from the building with great energy.  	And, as one can see by comparing videos on the Web, the collapses of the  	towers produced clouds that are very similar to those produced by controlled  	demolitions of other structures, such as Seattle’s Kingdome. The only  	difference is that the clouds produced during the collapses of the towers  	were proportionally much bigger.[30]
The question of the source of the  	needed energy again arises. Hoffman (2003), focusing on the expansion of the  	North Tower’s dust cloud, calculates that the energy required simply for  	this expansion---ignoring the energy needed to slice the steel and pulverize  	the concrete and other materials---exceeded by at least 10 times the  	gravitational energy available.
The official account, therefore,  	involves a huge violation of the laws of physics---a violation that becomes  	even more enormous once we factor in the energy required to pulverize the  	concrete (let alone the energy required to break the steel).
Besides the sheer quantity of energy  	needed, another problem with the official theory is that gravitational  	energy is wholly unsuited to explain the production of these dust clouds.  	This is most obviously the case in the first few seconds. In Hoffman’s  	words: “You can see thick clouds of pulverized concrete being ejected within  	the first two seconds. That’s when the relative motion of the top of the  	tower to the intact portion was only a few feet per second.”[31] Jeff King  	(2003), in the same vein, says: “[A great amount of] very fine concrete dust  	is ejected from the top of the building very early in the collapse. . .  	[when] concrete slabs [would have been] bumping into each other at [only] 20  	or 30 mph.”
The importance of King’s point can  	be appreciated by juxtaposing it with the claim by Shyam Sunder, NIST’s lead  	investigator, that although the clouds of dust created during the collapses  	of the Twin Towers may create the impression of a controlled demolition, “it  	is the floor pancaking that leads to that perception" (Popular Mechanics,  	2005). The pancaking, according to the official theory being defended by  	Sunder, began at the floor beneath the holes created by the impact of the  	airliners. As King points out, this theory cannot handle the fact, as  	revealed by the photographs and videos, that dust clouds were created far  	above the impact zones.
Horizontal Ejections: Another common  	feature of controlled demolition is the horizontal ejection of other  	materials, besides dust, from those areas of the building in which  	explosives are set off. In the case of the Twin Towers, photos and videos  	reveal that “[h]eavy pieces of steel were ejected in all directions for  	distances up to 500 feet, while aluminum cladding was blown up to 700 feet  	away from the towers” (Paul and Hoffman, 2004, p. 7). But gravitational  	energy is, of course, vertical, so it cannot even begin to explain these  	horizontal ejections.
Demolition Rings: Still another  	common feature of collapses induced by explosions are demolition rings, in  	which series of small explosions run rapidly around a building. This feature  	was also manifested by the collapses of the towers.[32]
Sounds Produced by Explosions: The  	use of explosives to induce collapses produces, of course, sounds caused by  	the explosions. Like all the previous features except the slicing of the  	steel columns inside the building, this one could be observed by witnesses.  	And, as we will see below, there is abundant testimony to the existence of  	such sounds before and during the collapses of the towers.
Molten Steel: An eleventh feature  	that would be expected only if explosives were used to slice the steel  	columns would be molten steel, and its existence at the WTC site was indeed  	reported by several witnesses, including the two main figures involved in  	the clean up, Peter Tully, president of Tully Construction, and Mark  	Loizeaux, president of Controlled Demolition, Incorporated. Tully said that  	he saw pools of “literally molten steel” at the site. Loizeaux said that  	several weeks after 9/11, when the rubble was being removed, “hot spots of  	molten steel” were found “at the bottoms of the elevator shafts of the main  	towers, down seven [basement] levels” (both statements quoted in Bollyn,  	2004).[33]
Also, Leslie Robertson, the chief  	structural engineer for the Twin Towers, said: “As of 21 days after the  	attack, the fires were still burning and molten steel was still running”  	(Williams, 2001). Knight-Ridder journalist Jennifer Lin, discussing Joe  	"Toolie" O'Toole, a Bronx firefighter who worked for many months on the  	rescue and clean-up efforts, wrote: "Underground fires raged for months.  	O'Toole remembers in February seeing a crane lift a steel beam vertically  	from deep within the catacombs of Ground Zero. 'It was dripping from the  	molten steel," he said'" (Lin, 2002). Greg Fuchek, vice president of sales  	for LinksPoint, Inc., which supplied some of the computer equipment used to  	identify human remains at the site, described the working conditions as  	"hellish," partly because for six months, the ground temperature varied  	between 600 degrees Fahrenheit and 1,500 degrees or higher. Fuchek added  	that "sometimes when a worker would pull a steel beam from the wreckage, the  	end of the beam would be dripping molten steel" (Walsh, 2002). And still  	more witnesses spoke of molten steel.[34]
This testimony is of great  	significance, since it would be hard to imagine what, other than high  	explosives, could have caused some of the steel to melt.
The importance of the nature of the  	collapses, as summarized in these 11 features, is shown by the fact that  	attempts to defend the official theory typically ignore most of them. For  	example, an article in Popular Mechanics (2005), seeking to debunk what it  	calls some of the most prevalent myths about 9/11 fabricated by “conspiracy  	theorists,” completely ignores the suddenness, verticality, rapidity, and  	totality of the collapses and also fails to mention the testimonies about  	molten steel, demolition rings, and the sounds of explosions.[35]
2. Testimonies about Explosions  	and Related Phenomena in the 9/11 Oral Histories
Most of these 11 features---all but  	the slicing of the core columns and the molten steel in the basements---are  	features that, if they occurred before or during the collapses of the  	towers, could have been observed by people in the area. And, in fact,  	testimonies about some of these phenomena have been available, since shortly  	after 9/11, from reporters,[36] fire fighters,[37] police officers,[38]  	people who worked in the towers,[39] and one prominent explosives expert,  	Van Romero, [40] who said on that very day after viewing the videotapes,  	that the collapses not only resembled those produced by controlled  	implosions but must, in fact, have been caused by “some explosive devices  	inside the buildings” because they were “too methodical” to have been chance  	results of the airplane strikes (Uyttebrouck, 2001).[41] Some of these  	testimonies were very impressive. There were, however, only a few of them  	and they were scattered here and there. No big body of testimony was readily  	accessible.
But this situation has dramatically  	changed. Shortly after 9/11, the New York Fire Department recorded over 500  	oral histories, in which firefighters and emergency medical workers  	recounted their experiences of that day. [Emergency Medical Services had  	become a division within the Fire Department(Dwyer, 2005a).] Mayor  	Bloomberg’s administration, however, refused to release them. But then the  	New York Times, joined by several families of 9/11 victims, filed suit and,  	after a long process, the New York Court of Appeals ordered the city to  	release the bulk of these oral histories, which it did in August 2005[42]  	(Dwyer, 2005b). The Times then made them publicly available (NYT, 2005).[43]
These oral histories contain many  	dozens of testimonies that speak of explosions and related phenomena  	characteristic of controlled demolition. I will give some examples.
Explosions
Several individuals reported that  	they witnessed an explosion just before one of the towers collapsed.  	Battalion Chief John Sudnik said: “we heard . . . what sounded like a loud  	explosion and looked up and I saw tower two start coming down” (NYT,  	Sudnick, p. 4).
Several people reported multiple  	explosions. Paramedic Kevin Darnowski said: "I heard three explosions, and  	then . . . tower two started to come down” (NYT, Darnowski, p. 8).
Firefighter Thomas Turilli said, “it  	almost sounded like bombs going off, like boom, boom, boom, like seven or  	eight" (NYT, Turilli, p. 4).
Craig Carlsen said that he and other  	firefighters “heard explosions coming from . . . the south tower. . . .  	There were about ten explosions. . . . We then realized the building started  	to come down” (NYT, Carlsen, pp. 5-6).
Firefighter Joseph Meola said, “it  	looked like the building was blowing out on all four sides. We actually  	heard the pops" (NYT, Meola, p. 5).
Paramedic Daniel Rivera also  	mentioned “pops.” Asked how he knew that the south tower was coming down, he  	said:
It was a frigging noise. At first I  	thought it was---do you ever see professional demolition where they set the  	charges on certain floors and then you hear 'Pop, pop, pop, pop, pop'? . . .  	I thought it was that. (NYT, Rivera, p. 9)
Collapse Beginning below the Strike  	Zone and Fire According to the official account, the “pancaking” began when  	the floors above the hole caused by the airplane fell on the floors below.  	Some witnesses reported, however, that the collapse of the south tower began  	somewhat lower.
Timothy Burke said that “the  	building popped, lower than the fire. . . . I was going oh, my god, there is  	a secondary device because the way the building popped. I thought it was an  	explosion” (NYT, Burke, pp. 8-9).
Firefighter Edward Cachia said: “It  	actually gave at a lower floor, not the floor where the plane hit. . . .  	[W]e originally had thought there was like an internal detonation,  	explosives, because it went in succession, boom, boom, boom, boom, and then  	the tower came down” (NYT, Cachia, p. 5).
The importance of these observations  	is reinforced by the fact that the authors of the NIST Report, after having  	released a draft to the public, felt the need to add the following statement  	to the Executive Summary:
NIST found no corroborating evidence  	for alternative hypotheses suggesting that the WTC towers were brought down  	by controlled demolition using explosives planted prior to September 11,  	2001. . . . Instead, photos and videos from several angles clearly showed  	that the collapse initiated at the fire and impact floors and that the  	collapse progressed from the initiating floors downward.
Firefighters Burke and Cachia  	presumably now need to ask themselves: What are you going to believe, your  	own eyes or an official government report?
Flashes and Demolition Rings
Some of the witnesses spoke of  	flashes and of phenomena suggestive of demolition rings. Assistant  	Commissioner Stephen Gregory said: “I thought . . . before . . . No. 2 came  	down, that I saw low-level flashes. . . . I . . . saw a flash flash flash .  	. . [at] the lower level of the building. You know like when they demolish a  	building?” (NYT, Gregory, pp. 14-16).
Captain Karin Deshore said:  	“Somewhere around the middle . . . there was this orange and red flash  	coming out. Initially it was just one flash. Then this flash just kept  	popping all the way around the building and that building had started to  	explode. . . . [W]ith each popping sound it was initially an orange and then  	a red flash came out of the building and then it would just go all around  	the building on both sides as far as I could see. These popping sounds and  	the explosions were getting bigger, going both up and down and then all  	around the building" (NYT, Deshore, p. 15).
Firefighter Richard Banaciski said:  	“[T]here was just an explosion. It seemed like on television [when] they  	blow up these buildings. It seemed like it was going all the way around like  	a belt, all these explosions” (NYT, Banaciski, pp. 3-4).
Deputy Commissioner Thomas  	Fitzpatrick said: “It looked like sparkling around one specific layer of the  	building. . . . My initial reaction was that this was exactly the way it  	looks when they show you those implosions on TV" (NYT, Fitzpatrick, pp.  	13-14).
Horizontal Ejections
A few witnesses spoke of horizontal  	ejections. Chief Frank Cruthers said: “There was what appeared to be . . .  	an explosion. It appeared at the very top, simultaneously from all four  	sides, materials shot out horizontally. And then there seemed to be a  	momentary delay before you could see the beginning of the collapse” (NYT,  	Cruthers, p. 4).
This testimony is important, because  	the official theory holds that the ejections were produced by the floors  	collapsing. So listen to firefighter James Curran, who said: “I looked back  	and . . . I heard like every floor went chu-chu-chu. I looked back and from  	the pressure everything was getting blown out of the floors before it  	actually collapsed" (NYT, Curran, pp. 10-11).
Battalion Chief Brian Dixon said,  	“the lowest floor of fire in the south tower actually looked like someone  	had planted explosives around it because . . . everything blew out on the  	one floor" (NYT, Dixon, p. 15).[44]
Synchronized Explosions
Some witnesses said that the  	explosions seemed to be synchronized. For example, firefighter Kenneth  	Rogers said, “there was an explosion in the south tower. . . . I kept  	watching. Floor after floor after floor. One floor under another after  	another . . . [I]t looked like a synchronized deliberate kind of thing"  	(NYT, Rogers, pp. 3-4).[45]
Why Does the Public Not Know of  	These Reports? If all these firefighters and medical workers witnessed all  	these phenomena suggestive of controlled demolition, it might be wondered  	why the public does not know this. Part of the answer is provided by  	Auxiliary Lieutenant Fireman Paul Isaac. Having said that “there were  	definitely bombs in those buildings,” Isaac added that “many other firemen  	know there were bombs in the buildings, but they’re afraid for their jobs to  	admit it because the ‘higher-ups’ forbid discussion of this fact” (Lavello,  	n.d.). Another part of the answer is that when a few people, like Isaac and  	William Rodriguez, have spoken out, the mainstream press has failed to  	report their statements.
3. Implications
The official theory about the  	collapse of the towers, I have suggested, is rendered extremely implausible  	by two main facts. First, aside from the alleged exception of 9/11,  	steel-frame high-rise buildings have never been caused to collapse by fire;  	all such collapses have all been produced by carefully placed explosives.  	Second, the collapses of the Twin Towers manifested at least 11  	characteristic features of controlled demolitions. The probability that any  	of these features would occur in the absence of explosives is extremely low.  	The probability that all 11 of them would occur is essentially zero.[46]
We can say, therefore, that the  	official theory about the towers is disproved about as thoroughly as such a  	theory possibly could be, whereas all the evidence can be explained by the  	alternative theory, according to which the towers were brought down by  	explosives. The official theory is, accordingly, an outrageous theory,  	whereas the alternative theory is, from a scientific point of view, the only  	reasonable theory available.[47]
4. Other Suspicious Facts
Moreover, although we have already  	considered sufficient evidence for the theory that the towers were brought  	down by explosives, there is still more.
Removal of the Steel: For one thing,  	the steel from the buildings was quickly removed before it could be properly  	examined,[48] with virtually all of it being sold to scrap dealers, who put  	most of it on ships to Asia.[49] Generally, removing any evidence from the  	scene of a crime is a federal offense. But in this case, federal officials  	facilitated the removal.[50]
This removal evoked protest. On  	Christmas day, 2001, the New York Times said: “The decision to rapidly  	recycle the steel columns, beams and trusses from the WTC in the days  	immediately after 9/11 means definitive answers may never be known.”[51] The  	next week, Fire Engineering magazine said: “We are literally treating the  	steel removed from the site like garbage, not like crucial fire scene  	evidence (Brannigan, Corbett, and Dunn, 2002). . . . The destruction and  	removal of evidence must stop immediately” (Manning, 2002).
However, Mayor Bloomberg, defending  	the decision to dispose of the steel, said: "If you want to take a look at  	the construction methods and the design, that's in this day and age what  	computers do.[52] Just looking at a piece of metal generally doesn't tell  	you anything."[53] But that is not true. An examination of the steel could  	have revealed whether it had been cut by explosives.
This removal of an unprecedented  	amount of material from a crime scene suggests that an unprecedented crime  	was being covered up.[54]
Evidence that this cover-up was  	continued by NIST is provided by its treatment of a provocative finding  	reported by FEMA, which was that some of the specimens of steel were  	“rapidly corroded by sulfidation” (FEMA 2002, Appendix C). This report is  	significant, because sulfidation is an effect of explosives. FEMA  	appropriately called for further investigation of this finding, which the  	New York Times called “perhaps the deepest mystery uncovered in the  	investigation” (Killough-Miller, 2002). A closely related problem, expressed  	shortly after 9/11 by Dr. Jonathan Barnett, Professor of Fire Protection  	Engineering at Worcester Polytechnic Institute, is that “[f]ire and the  	structural damage . . . would not explain steel members in the debris pile  	that appear to have been partly evaporated” (Glanz, 2001). But the NIST  	report, in its section headed “Learning from the Recovered Steel,” fails  	even to mention either evaporation or sulfidation.[55] Why would the NIST  	scientists apparently share Mayor Bloomberg’s disdain for empirical studies  	of recovered steel?
North Tower Antenna Drop: Another  	problem noted by FEMA is that videos show that, in the words of the FEMA  	Report, “the transmission tower on top of the [north tower] began to move  	downward and laterally slightly before movement was evident at the exterior  	wall. This suggests that collapse began with one or more failures in the  	central core area of the building” (FEMA 2002, ch. 2).[56] This drop was  	also mentioned in a New York Times story by James Glanz and Eric Lipton,  	which said: “Videos of the north tower's collapse appear to show that its  	television antenna began to drop a fraction of a second before the rest of  	the building. The observations suggest that the building's steel core  	somehow gave way first” (Glanz and Lipton, 2002). In the supposedly  	definitive NIST Report, however, we find no mention of this fact. This is  	another convenient omission, since the most plausible, and perhaps only  	possible, explanation would be that the core columns were cut by  	explosives---an explanation that would fit with the testimony of several  	witnesses.
South Tower Tipping and  	Disintegration: If the north tower’s antenna drop was anomalous (from the  	perspective of the official theory), the south tower’s collapse contained an  	even stranger anomaly. The uppermost floors---above the level struck by the  	airplane---began tipping toward the corner most damaged by the impact.  	According to conservation-of-momentum laws, this block of approximately 34  	floors should have fallen to the ground far outside the building’s  	footprint. “However,” observe Paul and Hoffman, “as the top then began to  	fall, the rotation decelerated. Then it reversed direction [even though the]  	law of conservation of angular momentum states that a solid object in  	rotation will continue to rotate at the same speed unless acted on by a  	torque” (Paul and Hoffman, 2004, p. 34).
And then, in the words of Steven  	Jones, a physics professor at BYU, “this block turned mostly to powder in  	mid-air!” This disintegration stopped the tipping and allowed the uppermost  	floors to fall straight down into, or at least close to, the building’s  	footprint. As Jones notes, this extremely strange behavior was one of many  	things that NIST was able to ignore by virtue of the fact that its analysis,  	in its own words, “does not actually include the structural behavior of the  	tower after the conditions for collapse initiation were reached” (NIST 2005,  	p. 80, n. 12). This is convenient because it means that NIST did not have to  	answer Jones’s question: “How can we understand this strange behavior,  	without explosives?” (Jones, 2006).
This behavior is, however, not  	strange to experts in controlled demolition. Mark Loizeaux, the head of  	Controlled Demolition, Inc., has said:
[B]y differentially controlling the  	velocity of failure in different parts of the structure, you can make it  	walk, you can make it spin, you can make it dance . . . . We'll have  	structures start facing north and end up going to the north-west. (Else,  	2004)
Once again, something that is  	inexplicable in terms of the official theory becomes a matter of course if  	the theory of controlled demolition is adopted.
WTC Security: The suggestion that  	explosives might have been used raises the question of how anyone wanting to  	place explosives in the towers could have gotten through the security  	checks. This question brings us to a possibly relevant fact about a  	company---now called Stratesec but then called Securacom---that was in  	charge of security for the World Trade Center. From 1993 to 2000, during  	which Securacom installed a new security system, Marvin Bush, the  	president’s brother, was one of the company’s directors. And from 1999 until  	January of 2002, their cousin Wirt Walker III was the CEO (Burns, 2003).[57]  	One would think these facts should have made the evening news---or at least  	The 9/11 Commission Report.
These facts, in any case, may be  	relevant to some reports given by people who had worked in the World Trade  	Center. Some of them reportedly said that although in the weeks before 9/11  	there had been a security alert that mandated the use of bomb-sniffing dogs,  	that alert was lifted five days before 9/11 (Taylor and Gardiner, 2001).
Also, a man named Scott Forbes, who  	worked for Fiduciary Trust---the company for which Kristen Breitweiser’s  	husband worked---has written:
On the weekend of [September 8-9,  	2001], there was a “power down” condition in . . . the south tower. This  	power down condition meant there was no electrical supply for approximately  	36 hours from floor 50 up. . . . The reason given by the WTC for the power  	down was that cabling in the tower was being upgraded . . . . Of course  	without power there were no security cameras, no security locks on doors  	[while] many, many “engineers” [were] coming in and out of the tower.[58]
Also, a man named Ben Fountain, who  	was a financial analyst with Fireman’s Fund in the south tower, was quoted  	in People Magazine as saying that during the weeks before 9/11, the towers  	were evacuated “a number of times” (People Magazine, 2001).
Foreknowledge of the Collapse: One  	more possibly relevant fact is that then Mayor Rudy Giuliani, talking on ABC  	News about his temporary emergency command center at 75 Barkley Street,  	said:
We were operating out of there when  	we were told that the World Trade Center was gonna collapse, and it did  	collapse before we could get out of the building.[59]
This is an amazing statement. Prior  	to 9/11, fire had never brought down a steel-frame high-rise. The firemen  	who reached the 78th floor of the south tower certainly did not believe it  	was going to collapse. Even the 9/11 Commission reported that to its  	knowledge, “none of the [fire] chiefs present believed that a total collapse  	of either tower was possible” (Kean and Hamilton, 2004, p. 302). So why  	would anyone have told Giuliani that at least one of the towers was about to  	collapse?
The most reasonable answer,  	especially in light of the new evidence, is that someone knew that  	explosives had been set in the south tower and were about to be discharged.  	It is even possible that the explosives were going to be discharged earlier  	than originally planned because the fires in the south tower were dying down  	more quickly than expected, because so much of the plane’s jet fuel had  	burned up in the fireball outside the building.[60] This could explain why  	although the south tower was struck second, suffered less structural damage,  	and had smaller fires, it collapsed first---after only 56 minutes. That is,  	if the official story was going to be that the fire caused the collapse, the  	building had to be brought down before the fire went completely out.[61]
We now learn from the oral  	histories, moreover, that Giuliani is not the only one who was told that a  	collapse was coming. At least four of the testimonies indicate that shortly  	before the collapse of the south tower, the Office of Emergency Management  	(OEM) had predicted the collapse of at least one tower.[62] The director of  	OEM reported directly to Giuliani.[63] So although Giuliani said that he and  	others “were told” that the towers were going to collapse, it was his own  	people who were doing the telling.
As New York Times reporter Jim Dwyer  	has pointed out, the 9/11 Commission had access to the oral histories.[64]  	It should have discussed these facts, but it did not.
The neglect of most of the relevant  	facts about the collapses, manifested by The 9/11 Commission Report, was  	continued by the NIST Report, which said, amazingly:
The focus of the Investigation was  	on the sequence of events from the instant of aircraft impact to the  	initiation of collapse for each tower. For brevity in this report, this  	sequence is referred to as the "probable collapse sequence," although it  	does not actually include the structural behavior of the tower after the  	conditions for collapse initiation were reached. . . . [Our simulation  	treats only] the structural deterioration of each tower from the time of  	aircraft impact to the time at which the building . . . was poised for  	collapse (80n, 140).
Steven Jones comments,  	appropriately:
What about the subsequent complete,  	rapid and symmetrical collapse of the buildings? . . . What about the  	antenna dropping first in the North Tower? What about the molten metal  	observed in the basement areas . . . ? Never mind all that: NIST did not  	discuss at all any data after the buildings were “poised for collapse.”  	Well, some of us want to look at all the data, without computer simulations  	that are “adjusted” to make them fit the desired outcome. (Jones, 2006)
Summary: When we add these five  	additional suspicious facts to the eleven features that that the collapses  	of the Twin Towers had in common with controlled demolitions, we have a  	total of sixteen facts about the collapses of these buildings that, while  	being inexplicable in terms of the official theory, are fully understandable  	on the theory that the destruction of the towers was an inside job.
5. The Collapse of Building 7
As we have seen, the 9/11 Commission  	simply ignored the facts discussed above. Still another matter not discussed  	by the Commission was the collapse of building 7. And yet the official story  	about it is, if anything, even more problematic than the official story  	about the towers—as suggested by the title of a New York Times story,  	“Engineers Are Baffled over the Collapse of 7 WTC” (Glanz, 2001).[65]
Even More Difficult to Explain
The collapse of building 7 is even  	more difficult to explain than the collapse of the towers in part because it  	was not struck by an airliner, so none of the theories about how the impacts  	of the airliners contributed to the collapses of the towers can be employed  	in relation to it.
Also, all the photographic evidence  	suggests that the fires in this building were small, not very hot, and  	limited to a few floors. Photographs of the north side of the building show  	fires only on the 7th and 12th floors of this 47-floor building. So if the  	south side, which faced the towers, had fires on many other floors, as  	defenders of the official account claim, they were not big enough to be seen  	from the other side of the building.[66]
It would not be surprising, of  	course, if the fires in this building were even smaller than those in the  	towers, because there was no jet fuel to get a big fire started. Some  	defenders of the official story have claimed, to be sure, that the diesel  	fuel stored in this building somehow caught fire and created a towering  	inferno. But if building 7 had become engulfed in flames, why did none of  	the many photographers and TV camera crews on the scene capture this sight?
The extreme difficulty of explaining  	the collapse of building 7—-assuming that it is not permissible to mention  	controlled demolition---has been recognized by the official bodies. The  	report prepared under FEMA’s supervision came up with a scenario employing  	the diesel fuel, then admitted that this scenario had “only a low  	probability of occurrence.”[67] Even that statement is generous, because the  	probability that some version of the official story of building 7 is true is  	the same as it is for the towers, essentially zero, because it would violate  	several laws of physics. In any case, the 9/11 Commission, perhaps because  	of this admission by FEMA, avoided the problem by simply not even mentioning  	the fact that this building collapsed.
This was one of the Commission’s  	most amazing omissions. According to the official theory, building 7  	demonstrated, contrary to the universal conviction prior to 9/11, that large  	steel-frame buildings could collapse from fire alone, even without having  	been hit by an airplane. This demonstration should have meant that building  	codes and insurance premiums for all steel-frame buildings in the world  	needed to be changed. And yet the 9/11 Commission, in preparing its 571-page  	report, did not devote a single sentence to this historic event.
Even More Similar to Controlled  	Implosions
Yet another reason why the collapse  	of building 7 is especially problematic is that it was even more like the  	best-known type of conventional demolition—-namely, an implosion, which  	begins at the bottom (whereas the collapse of each tower originated high up,  	near the region struck by the plane). As Eric Hufschmid has written:
Building 7 collapsed at its bottom.  	. . . [T]he interior fell first. . . . The result was a very tiny pile of  	rubble, with the outside of the building collapsing on top of the pile.[68]
Implosion World.com, a website about  	the demolition industry, states that an implosion is “by far the trickiest  	type of explosive project, and there are only a handful of blasting  	companies in the world that possess enough experience . . . to perform these  	true building implosions."[69] Can anyone really believe that fire would  	have just happened to produce the kind of collapse that can be reliably  	produced by only a few demolition companies in the world? The building had  	24 core columns and 57 perimeter columns. To hold that fire caused this  	building to collapse straight down would mean believing that the fire caused  	all 81 columns to fail at exactly the same time. To accept the official  	story is, in other words, to accept a miracle. Physicist Steven Jones  	agrees, saying:
The likelihood of near-symmetrical  	collapse of WTC7 due to random fires (the "official" theory)---requiring as  	it does near-simultaneous failure of many support columns---is  	infinitesimal. I conclude that the evidence for the 9/11 use of  	pre-positioned explosives in WTC 7 (also in Towers 1 and 2) is truly  	compelling.[70]
Much More Extensive Foreknowledge
Another reason why the collapse of  	building 7 creates special problems involves foreknowledge of its collapse.  	We know of only a few people with advance knowledge that the Twin Towers  	were going to collapse, and the information we have would be consistent with  	the supposition that this knowledge was acquired only a few minutes before  	the south tower collapsed. People can imagine, therefore, that someone saw  	something suggesting that the building was going to collapse. But the  	foreknowledge of building 7’s collapse was more widespread and of longer  	duration. This has been known for a long time, at least by people who read  	firefighters’ magazines.[71] But now the oral histories have provided a  	fuller picture.
Widespread Notification: At least 25  	of the firefighters and medical workers reported that, at some time that  	day, they learned that building 7 was going to collapse. Firefighters who  	had been fighting the fires in the building said they were ordered to leave  	the building, after which a collapse zone was established. As medical worker  	Decosta Wright put it: “they measured out how far the building was going to  	come, so we knew exactly where we could stand,” which was “5 blocks away”  	(NYT, Wright, pp. 11-12).
Early Warning: As to exactly when  	the expectation of the collapse began circulating, the testimonies differ.  	But most of the evidence suggests that the expectation of collapse was  	communicated 4 or 5 hours in advance.[72]
The Alleged Reason for the  	Expectation: But why would this expectation have arisen? The fires in  	building 7 were, according to all the photographic evidence, few and small.  	So why would the decision-makers in the department have decided to pull  	firefighters out of building 7 and have them simply stand around waiting for  	it to collapse?
The chiefs gave a twofold  	explanation: damage plus fire. Chief Frank Fellini said: “When [the north  	tower] fell, it ripped steel out from between the third and sixth floors  	across the facade on Vesey Street. We were concerned that the fires on  	several floors and the missing steel would result in the building  	collapsing” (NYT, Fellini, p. 3).
There are at least two problems with  	each part of this explanation. One problem with the accounts of the  	structural damage is that they vary greatly. According to Fellini’s  	testimony, there was a four-floor hole between the third and sixth floors.  	In the telling of Captain Chris Boyle, however, the hole was “20 stories  	tall” (2002). It would appear that Shyam Sunder, the lead investigator for  	NIST, settled on somewhat of a compromise between these two views, telling  	Popular Mechanics that, “On about a third of the face to the center and to  	the bottom--approximately 10 stories--about 25 percent of the depth of the  	building was scooped out” (Popular Mechanics, March 2005).
The different accounts of the  	problem on the building’s south side are not, moreover, limited to the issue  	of the size of the hole. According to Deputy Chief Peter Hayden, the problem  	was not a hole at all but a “bulge,” and it was “between floors 10 and 13"  	(Hayden, 2002).
The second problem with these  	accounts of the damage is if there was a hole that was 10 or 20 floors high,  	or even a hole (or a budge) that was 4 floors high, why was this fact not  	captured on film by any of the photographers or videographers in the area  	that day?
With regard to the claims about the  	fire, the accounts again vary greatly. Chief Daniel Nigro spoke of “very  	heavy fire on many floors” (NYT, Nigro, p. 10). According to Harry Meyers,  	an assistant chief, "When the building came down it was completely involved  	in fire, all forty-seven stories" (quoted in Smith, 2002, p. 160). That  	obvious exaggeration was also stated by a firefighter who said: “[Building  	7] was fully engulfed. . . . [Y]ou could see the flames going straight  	through from one side of the building to the other” (NYT, Cassidy, p. 22).
Several of the testimonies, however,  	did not support the official line. For example, medical technician Decosta  	Wright said: “I think the fourth floor was on fire. . . . [W]e were like,  	are you guys going to put that fire out?” (NYT, Wright, p. 11). Chief Thomas  	McCarthy said: “[T]hey were waiting for 7 World Trade to come down. . . .  	They had . . . fire on three separate floors . . . , just burning merrily.  	It was pretty amazing, you know, it's the afternoon in lower Manhattan, a  	major high-rise is burning, and they said ‘we know’” (NYT, McCarthy, pp.  	10-11).
The second problem with the official  	account here is that if there was “very heavy fire on many floors,” why is  	this fact not captured on any film? The photograph that we have of the north  	side of the building supports Chief McCarthy’s view that there was fire on  	three floors. Even if there were fires on additional floors on the south  	side of the building, there is no photographic support for the claim that  	“the flames [on these additional floors went] straight through from one side  	of the building to the other.”
Moreover, even if the department’s  	official story about the collapse of building 7 were not contradicted by  	physical evidence and some of the oral histories, it would not explain why  	the building collapsed, because no amount of fire and structural damage,  	unless caused by explosives, had ever caused the total collapse of a large  	steel-frame building.[73] And it certainly would not explain the particular  	nature of the collapse---that the building imploded and fell straight down  	rather than falling over in some direction, as purportedly expected by those  	who gave the order to create a large collapse zone. Battalion Chief John  	Norman, for example, said: “We expected it to fall to the south” (Norman  	2002). Nor would the damage-plus-fire theory explain this building’s  	collapse at virtually free-fall speed or the creation of an enormous amount  	of dust—additional features of the collapses that are typically ignored by  	defenders of the official account.
The great difficulty presented to  	the official theory about the WTC by the collapse of building 7 is  	illustrated by a recent book, 102 Minutes: The Untold Story of the Fight to  	Survive Inside the Twin Towers, one of the authors of which is New York  	Times reporter Jim Dwyer, who wrote the stories in the Times about the  	release of the 9/11 oral histories. With regard to the Twin Towers, Dwyer  	and his co-author, Kevin Flynn, support the theory put out by NIST,  	according to which the towers collapsed because the airplanes knocked the  	fire-proofing off the steel columns, making them vulnerable to the “intense  	heat” of the ensuing fires.[74] When they come to building 7, however, Dwyer  	and Flynn do not ask why it collapsed, given the fact that it was not hit by  	a plane. They simply say: “The firefighters had decided to let the fire  	there burn itself out” (Dwyer and Flynn, 2005, p. 258). But that, of course,  	is not what happened. Rather, shortly after 5:20 that day, building 7  	suddenly collapsed, in essentially the same way as did the Twin Towers.
Should this fact not have led Dryer  	and Flynn to question NIST’s theory that the Twin Towers collapsed because  	their fireproofing had been knocked loose? I would especially think that  	Dwyer, who reported on the release of the 9/11 oral histories, should  	re-assess NIST’s theory in light of the abundant evidence of explosions in  	the towers provided in those testimonies.[75]
Another Explanation: There is, in  	any case, only one theory that explains both the nature and the expectation  	of the collapse of building 7: Explosives had been set, and someone who knew  	this spread the word to the fire chiefs.
Amazingly enough, a version of this  	theory was publicly stated by an insider, Larry Silverstein, who owned  	building 7. In a PBS documentary aired in September of 2002, Silverstein,  	discussing building 7, said:
I remember getting a call from the,  	er, fire department commander, telling me that they were not sure they were  	gonna be able to contain the fire, and I said, “We've had such terrible loss  	of life, maybe the smartest thing to do is pull it.”[76] And they made that  	decision to pull and we watched the building collapse. (PBS, 2002) [77]
It is very puzzling, to be sure,  	that Silverstein, who was ready to receive billions of dollars in insurance  	payments for building 7 and the rest of the World Trade Center complex, on  	the assumption that they had been destroyed by acts of terrorism, would have  	made such a statement in public, especially with TV cameras running. But his  	assertion that building 7 was brought down by explosives, whatever the  	motive behind it, explains why and how it collapsed.
We still, however, have the question  	of why the fire department came to expect the building to collapse. It would  	be interesting, of course, if that information came from the same agency,  	the Office of Emergency Management, that had earlier informed the department  	that one of the towers was going to collapse. And we have it on good  	authority that it did. Captain Michael Currid, the president of the  	Uniformed Fire Officers Association, said that some time after the collapse  	of the Twin Towers, “Someone from the city's Office of Emergency Management”  	told him that building 7 was “basically a lost cause and we should not lose  	anyone else trying to save it," after which the firefighters in the building  	were told to get out (Murphy, 2002, pp. 175-76).[78]
But that answer, assuming it to be  	correct, leaves us with more questions, beginning with: Who in the Office of  	Emergency Management knew in advance that the towers and building 7 were  	going to collapse? How did they know this? And so on. These questions could  	be answered only by a real investigation, which has yet to begin.
6. Conclusion
It is, in any case, already possible  	to know, beyond a reasonable doubt, one very important thing: the  	destruction of the World Trade Center was an inside job, orchestrated by  	domestic terrorists. Foreign terrorists could not have gotten access to the  	buildings to plant the explosives. They probably would not have had the  	courtesy to make sure that the buildings collapsed straight down, rather  	than falling over onto surrounding buildings. And they could not have  	orchestrated a cover-up, from the quick disposal of the steel to the FEMA  	Report to The 9/11 Commission Report to the NIST Report. All of these things  	could have been orchestrated only by forces within our own government.
The evidence for this conclusion has  	thus far been largely ignored by the mainstream press, perhaps under the  	guise of obeying President Bush’s advice not to tolerate “outrageous  	conspiracy theories.” We have seen, however, that it is the Bush  	administration’s conspiracy theory that is the outrageous one, because it is  	violently contradicted by numerous facts, including some basic laws of  	physics.
There is, of course, another reason  	why the mainstream press has not pointed out these contradictions. As a  	recent letter to the Los Angeles Times said:
The number of contradictions in the  	official version of . . . 9/11 is so overwhelming that . . . it simply  	cannot be believed. Yet . . . the official version cannot be abandoned  	because the implication of rejecting it is far too disturbing: that we are  	subject to a government conspiracy of ‘X-Files’ proportions and  	insidiousness.[79]
The implications are indeed  	disturbing. Many people who know or at least suspect the truth about 9/11  	probably believe that revealing it would be so disturbing to the American  	psyche, the American form of government, and global stability that it is  	better to pretend to believe the official version. I would suggest, however,  	that any merit this argument may have had earlier has been overcome by more  	recent events and realizations. Far more devastating to the American psyche,  	the American form of government, and the world as a whole will be the  	continued rule of those who brought us 9/11, because the values reflected in  	that horrendous event have been reflected in the Bush administration’s lies  	to justify the attack on Iraq, its disregard for environmental science and  	the Bill of Rights, its criminal negligence both before and after Katrina,  	and now its apparent plan not only to weaponize space but also to authorize  	the use of nuclear weapons in a preemptive strike.
In light of this situation and the  	facts discussed in this essay---as well as dozens of more problems in the  	official account of 9/11 discussed in my books---I call on the New York  	Times to take the lead in finally exposing to the American people and the  	world the truth about 9/11. Taking the lead on such a story will, of course,  	involve enormous risks. But if there is any news organization with the  	power, the prestige, and the credibility to break this story, it is the  	Times. It performed yeoman service in getting the 9/11 oral histories  	released. But now the welfare of our republic and perhaps even the survival  	of our civilization depend on getting the truth about 9/11 exposed. I am  	calling on the Times to rise to the occasion.  	
ENDNOTES 
[1] Both lectures are also available on  	DVDs edited by Ken Jenkins (kenjenkins@aol.com). See also Griffin, 2005c.
[2] Bush’s more complete statement was:  	“We must speak the truth about terror. Let us never tolerate outrageous  	conspiracy theories concerning the attacks of 11 September---malicious lies  	that attempt to shift the blame away from the terrorists themselves, away  	from the guilty.” Excellent advice.
[3] This report was carried out by the  	American Society of Civil Engineers (ASCE) on behalf of the Federal  	Emergency Management Agency (FEMA). The public was exposed to this theory  	early on, with CNN saying shortly after 9/11: “The collapse, when it came,  	was caused by fire. . . . The fire weakened that portion of the structure  	which remained after the impact. . . to the point where it could no longer  	sustain the load” (CNN, September 24, 2001).
[4] NIST describes the collapses of the  	towers as instances of “progressive collapse,” which happens when "a  	building or portion of a building collapses due to disproportionate spread  	of an initial local failure" (NIST Report, p. 200). NIST thereby falsely  	implies that the total collapses of the three WTC buildings were specific  	instances of a general category with other instances. NIST even claims that  	the collapses were “inevitable.”
[5] The chief structural engineer,  	Leslie Robertson, said that the Twin Towers were designed to withstand the  	impact of a Boeing 707, at that time (1966) the largest airliner. See “The  	Fall of the World Trade Center,” BBC 2, March 7, 2002 (http://www.bbc.co.uk/science/horizon/2001/worldtradecentertrans.shtml  	). For a comparison of the 707 and the 767, see “Boeing 707-767 Comparison,”  	What Really Happened  	(http://www.whatreallyhappened.com/boeing_707_767.html). Also relevant is  	the fact that in 1945, a B-25 bomber struck the Empire State Building at the  	79th floor, creating a hole 20 feet high. But there was never the slightest  	indication that this accident would cause the building to collapse (see  	Glover, 2002).
[6] The NIST Report (2005, pp. xliii  	and 171) says: “the towers withstood the impacts and would have remained  	standing were it not for the dislodged insulation (fireproofing) and the  	subsequent multifloor fires.”
[7] Supported by these authorities, the  	show went on to claim that “as fires raged in the towers, driven by aviation  	fuel, the steel cores in each building would have eventually reached 800°C  	[1472°F]---hot enough to start buckling and collapsing.”
[8]In Griffin, 2004, pp. 12-13, I cite  	Professor Thomas Eagar’s acknowledgment of this fact.
[9] Given the fact that the claim that  	the fires in the towers melted its steel is about as absurd, from a  	scientific point of view, as a claim could be, it is amazing to see that  	some scientific journals seemed eager to rush into print with this claim. On  	the day after 9/11, for example, New Scientist published an article that  	said: “Each tower [after it was struck] remained upright for nearly an hour.  	Eventually raging fires melted the supporting steel struts” (Samuel and  	Carrington, 2001). The article’s title, “Design Choice for Towers Saved  	Lives”, reflects the equally absurd claim---attributed to “John Hooper,  	principal engineer in the company that provided engineering advice when the  	World Trade Center was designed”---that “[m]ost buildings would have come  	down immediately.”
[10] Stating this obvious point could,  	however, be costly to employees of companies with close ties to the  	government. On November 11, 2004, Kevin Ryan, the Site Manager of the  	Environmental Health Laboratories, which is a division of Underwriters  	Laboratories, wrote an e-mail letter to Dr. Frank Gayle, Deputy Chief of the  	Metallurgy Division, Material Science and Engineering Laboratory, at the  	National Institute of Standards and Technology (NIST). In this letter, Ryan  	stated: “We know that the steel components were certified to ASTM E119. The  	time temperature curves for this standard require the samples to be exposed  	to temperatures around 2000°F for several hours. And as we all agree, the  	steel applied met those specifications. Additionally, I think we can all  	agree that even un-fireproofed steel will not melt until reaching red-hot  	temperatures of nearly 3000°F. Why Dr. Brown would imply that 2000°F would  	melt the high-grade steel used in those buildings makes no sense at all.”  	After Ryan allowed his letter to become public, he was fired. His letter is  	available at 	 	http://www.septembereleventh.org/newsarchive/2004-11-11-ryan.php .
[11] One well-known attempt to defend  	the official account has tried to use the absurdity of the steel-melting  	claim against those who reject the official account. In its March issue of  	2005, Popular Mechanics magazine published a piece entitled “9/11: Debunking  	the Myths”  	(http://www.popularmechanics.com/science/defense/1227842.html?page=1&c=y).  	This article sets out to debunk what it alleges to be “16 of the most  	prevalent claims made by conspiracy theorists.” One of these “poisonous  	claims,” according to Popular Mechanics, results from the fact that that  	these “conspiracy theorists” have created a straw-man argument---pretending  	that the official theory claims that the buildings came down because their  	steel melted---which the conspiracy theorists could then knock down. Popular  	Mechanics “refutes” this straw-man argument by instructing us that “[j]et  	fuel burns at 800° to 1500°F, not hot enough to melt steel (2750°F).  	However, experts agree that for the towers to collapse, their steel frames  	didn't need to melt, they just had to lose some of their structural  	strength.” As we have seen, however, the idea that the towers collapsed  	because their steel melted was put into the public consciousness by some  	early defenders of the official theory. For critics of this theory to show  	the absurdity of this claim is not, therefore, to attack a straw man. The  	idea that the official theory is based on this absurd claim is, in any case,  	not one of “the most prevalent claims” of those who reject the official  	theory.
[12] Even Shyam Sunder, the lead  	investigator for the NIST study, said: “The jet fuel probably burned out in  	less than 10 minutes” (Field, 2004). The NIST Report itself says (p. 179):  	“The initial jet fuel fires themselves lasted at most a few minutes.”
[13] The NIST Report (2005, p. 68),  	trying to argue that steel is very vulnerable unless it is protected by  	insulation, says: “Bare structural steel components can heat quickly when  	exposed to a fire of even moderate intensity. Therefore, some sort of  	thermal protection, or insulation, is necessary”. As Hoffman (2005) points  	out, however: “These statements are meaningless, because they ignore the  	effect of steel’s thermal conductivity, which draws away heat, and the  	considerable thermal mass of the 90,000 tons of steel in each Tower.” Also,  	I can only wonder if the authors of the NIST Report reflected on the  	implications of their theory for the iron or steel grating in their  	fireplaces. Do they spray on new fireproofing after enjoying a blazing hot  	fire for a few hours?
[14]Quoted in “WTC 2: There Was No  	Inferno,” What Really Happened  	(http://www.whatreallyhappened.com/wtc2_fire.html).
[15] Quoted in “Tape Sheds Light on WTC  	Rescuers,” CNN, August 4, 2002 (http://archives.cnn.com/2002/US/08/04/wtc.firefighters/  	). The voices of the firefighters reportedly “showed no panic, no sense that  	events were racing beyond their control.” (Dwyer and Fessenden, 2002)
[16] As Eric Hufschmid (2002, p. 33)  	says: “A fire will not affect steel unless the steel is exposed to it for a  	long . . . period of time”.
[17] CNN, September 24, 2001.
[18] Kevin Ryan, in his letter to Frank  	Gayle (see note 10, above), wrote in criticism of NIST’s preliminary report:  	“This story just does not add up. If steel from those buildings did soften  	or melt, I’m sure we can all agree that this was certainly not due to jet  	fuel fires of any kind, let alone the briefly burning fires in those towers.  	. . . Please do what you can to quickly eliminate the confusion regarding  	the ability of jet fuel fires to soften or melt structural steel.”
[19] See, for example, Eric Hufschmid’s  	“Painful Deceptions” (available at www.EricHufschmid.Net); Jim Hoffman’s  	website (http://911research.wtc7.net/index.html); and Jeff King’s website (http://home.comcast.net/~jeffrey.king2/wsb/html/view.cgi-home.html-.html  	), especially “The World Trade Center Collapse: How Strong is the Evidence  	for a Controlled Demolition?”
[20] Incredibly, after explaining how  	precisely explosives must be set to ensure that a building comes straight  	down, Loizeaux said that upon seeing the fires in the Twin Towers, he knew  	that the towers were “going to pancake down, almost vertically. It was the  	only way they could fail. It was inevitable.” Given the fact that fire had  	never before caused steel-frame buildings to collapse, let alone in a way  	that perfectly mimicked controlled demolition, Loizeaux’s statement is a  	cause for wonder. His company, incidentally, was hired to remove the steel  	from the WTC site after 9/11.
[21] The fire theory is rendered even  	more unlikely if the first two characteristics are taken together. For fire  	to have induced a collapse that began suddenly and was entirely symmetrical,  	so that it went straight down, the fires would have needed to cause all the  	crucial parts of the building to fail simultaneously, even though the fires  	were not spread evenly throughout the buildings. As Jim Hoffman has written:  	“All 287 columns would have to have weakened to the point of collapse at the  	same instant” (“The Twin Towers Demolition,” 9-11 Research.wtc7.net, n.d., 	 	http://911research.wtc7.net/talks/towers/slides.html ).
[22] That statement is probably a  	slight exaggeration, as the videos, according to most students, seem to  	suggest that the collapses took somewhere between 11 and 16 seconds. But  	this would still be close to free-fall speed through the air.
[23] As physicist Steven Jones puts it,  	“the Towers fall very rapidly to the ground, with the upper part falling  	nearly as rapidly as ejected debris which provide free-fall references . . .  	. Where is the delay that must be expected due to conservation of  	momentum---one of the foundational Laws of Physics? That is, as  	upper-falling floors strike lower floors---and intact steel support  	columns---the fall must be significantly impeded by the impacted mass. . . .  	[B]ut this is not the case. . . . How do the upper floors fall so quickly,  	then, and still conserve momentum in the collapsing buildings? The  	contradiction is ignored by FEMA, NIST and 9/11 Commission reports where  	conservation of momentum and the fall times were not analyzed” (Jones, 2006;  	until then available at  	http://www.physics.byu.edu/research/energy/htm7.html).
[24] Each box column, besides being at  	least 36 by 16 inches, had walls that were at least 4 inches thick at the  	base, then tapered off in the upper floors, which had less weight to  	support. Pictures of columns can be seen on page 23 of Hufschmid, 2002. The  	reason for the qualification “at least” in these statements is that Jim  	Hoffman has recently concluded that some of them were even bigger. With  	reference to his article “The Core Structures: The Structural System of the  	Twin Towers,” 9-11 Research.wtc7.net, n.d.  	[http://911research.wtc7.net/wtc/arch/core.html], he has written (e-mail  	letter of October 26, 2005): “Previously I've been saying that the core  	columns had outside dimensions of 36" X 16", but I now think that at least  	1/3 of them had dimensions of 54" X 22", based on early articles in the  	Engineering News Record and photographs I took of close-up construction  	photos on display at the Skyscraper Museum in Manhattan. . . . Also,  	according to the illustration in the Engineering News Record, the thickness  	of the steel at the bases was 5", not 4".”
[25] And, as Hoffman (2005) says,  	NIST’s claim about these tremendously hot fires in the core is especially  	absurd given the fact that the core “had very little fuel; was far from any  	source of fresh air; had huge steel columns to wick away the heat; [and]  	does not show evidence of fires in any of the photographs or videos.” All  	the evidence, in other words, suggests that none of the core columns would  	have (from the fire) reached the highest temperatures reached by some of the  	perimeter columns.
[26] NIST rests its theory largely on  	the idea that collapse began with the failure of the trusses. Being much  	smaller and also less interconnected, trusses would have been much easier to  	heat up, so it is not surprising that the NIST Report focuses on them. To  	try to make its theory work, however, NIST claims that the trusses became  	hotter than their own evidence supports. That is, although NIST found no  	evidence that any of the steel had gotten hotter than 1112°F (600°C), it  	claims that some of the steel trusses were heated up to 1,292°F (700°C)  	(2005, pp. 96, 176-77). A supposedly scientific argument cannot arbitrarily  	add 180°F just because it happens to need it. In any case, besides the fact  	that this figure is entirely unsupported by any evidence, NIST’s theory  	finally depends on the claim that the core columns failed as “a result of  	both splice connection failures and fracture of the columns themselves,”  	because they were “weakened significantly by . . . thermal effects” (2005,  	pp. 88, 180). But there is no explanation of how these massive columns would  	have been caused to “fracture,” even if the temperatures had gotten to those  	heights. As a study issued in the UK put it: “Thermal expansion and the  	response of the whole frame to this effect has not been described [by NIST]  	as yet” (Lane and Lamont, 2005).
[27] The RDX quotation is in Tom Held,  	'Hoan Bridge Blast Set Back to Friday,' www.jsonline.com (Milwaukee Journal  	Sentinel), Updated Dec. 19, 2000 (http://www.jsonline.com/news/metro/dec00/hoan20121900a.asp  	). The DREXS quotation is in Hufschmid’s video, “Painful Deceptions”  	(www.EricHufschmid.Net).
[28] In that statement, Hoffman said  	that most of the sections seemed to be no more than 30-feet long. He later  	revised this, saying that, judging from an aerial image taken 12 days after  	the attacks, most of the pieces seemed to be between 24 and 48 feet long,  	with only a few over 50 feet. He also noted that “the lengths of the pieces  	bears little resemblance to the lengths of the steel parts known to have  	gone into the construction,” which means that one could not reasonably infer  	that the pieces simply broke at their joints (e-mail letter, September 27,  	2005).
[29] The available evidence, says  	Hoffman (2003), suggests that the dust particles were very small indeed---on  	the order of 10 microns.
[30] Hoffman (“The Twin Towers  	Demolition”) says that the clouds expanded to five times the diameter of the  	towers in the first ten seconds. The Demolition of the Kingdome can be  	viewed at the website of Controlled Demolition, Inc.  	(http://www.controlled-demolition.com/default.asp?reqLocId=7&reqItemId=20030317140323).  	The demolition of the Reading Grain Facility can be seen at  	ImplosionWorld.com (http://implosionworld.com/reading.html).
[31]Jim Hoffman, “The Twin Towers  	Demolition.”
[32]For visual evidence of this and the  	preceding characteristics (except sliced steel), see Hufschmid’s Painful  	Questions; Hufschmid’s video “Painful Deceptions” (available at  	www.EricHufschmid.Net); Jim Hoffman’s website  	(http://911research.wtc7.net/index.html); and Jeff King’s website  	(http://home.comcast.net/~jeffrey.king2/wsb/html/view.cgi-home.html-.html),  	especially “The World Trade Center Collapse: How Strong is the Evidence for  	a Controlled Demolition?”
[33] Bollyn says (e-mail letter of  	October 27, 2005) that these statements were made to him personally during  	telephone interviews with Tully and Loizeaux, probably in the summer of  	2002. Bollyn added that although he is not positive about the date of the  	telephone interviews, he is always “very precise about quotes”  	(http://www.americanfreepress.net/09_03_02/NEW_SEISMIC_/new_seismic_.html).
[34]Professor Allison Geyh (2001) of  	Johns Hopkins, who was part of a team of public health investigators who  	visited the site shortly after 9/11, wrote: "In some pockets now being  	uncovered they are finding molten steel”. Dr. Keith Eaton, who somewhat  	later toured the site with an engineer, said that he was shown slides of  	“molten metal, which was still red hot weeks after the event” (Structural  	Engineer, 2002, p. 6). Herb Trimpe (2002), an Episcopalian deacon who served  	as a chaplain at Ground Zero, said: "[I]t was actually warmer on site. The  	fires burned, up to 2,000 degrees, underground for quite a while. . . . I  	talked to many contractors and they said . . . beams had just totally had  	been melted because of the heat."
[35] This article in Popular Mechanics  	is, to be blunt, spectacularly bad. Besides the problems pointed out here  	and in note 11, above, and note 39, below, the article makes this amazing  	claim: “In the decade before 9/11, NORAD intercepted only one civilian plane  	over North America: golfer Payne Stewart's Learjet, in October 1999.” In  	reality, as genuine 9/11 researchers know, the FAA reported in a news  	release on Aug. 9, 2002, that it had scrambled fighters 67 times between  	September 2000 and June 2001, and the Calgary Herald (Oct. 13, 2001)  	reported that NORAD scrambled fighters 129 times in 2000. By extrapolation,  	we can infer that NORAD had scrambled fighters over 1000 times in the decade  	prior to 9/11. The claim by Popular Mechanics could be true only if in all  	of these cases, except for the Payne Stewart incident, the fighters were  	called back to base before they actually intercepted the aircraft in  	question. This is a most unlikely possibility, especially in light of the  	fact that Major Mike Snyder, a NORAD spokesperson, reportedly told the  	Boston Globe a few days after 9/11 that “[NORAD’S] fighters routinely  	intercept aircraft” (Johnson, 2001).
As to why Popular Mechanics would have  	published such a bad article, one clue is perhaps provided by the fact that  	the article’s “senior researcher” was 25-year old Benjamin Chertoff, cousin  	of Michael Chertoff, the new head of the Department of Homeland Security  	(see Bollyn, 2005a). Another relevant fact is that this article was  	published shortly after a coup at this Hearst-owned magazine, in which the  	editor-in-chief was replaced (see Bollyn, 2005b). Young Chertoff’s debunking  	article has itself been effectively debunked by many genuine 9/11  	researchers, such as Jim Hoffman, “Popular Mechanics' Assault on 9/11  	Truth,” Global Outlook 10 (Spring-Summer 2005), 21-42 (which was based on  	Hoffman, “Popular Mechanics’ Deceptive Smear Against 9/11 Truth,”  	911Review.com, February 15, 2005  	[http://911review.com/pm/markup/index.html]), and Peter Meyer, “Reply to  	Popular Mechanics re 9/11,”  	http://www.serendipity.li/wot/pop_mech/reply_to_popular_mechanics.htm. To be  	sure, these articles by Hoffman and Meyer, while agreeing on many points,  	take different approaches in response to some of the issues raised. But both  	articles demonstrate that Popular Mechanics owes its readers an apology for  	publishing such a massively flawed article on such an important subject.
[36] NBC’s Pat Dawson reported from the  	WTC on the morning of 9/11 that he had been told by Albert Turi, the Fire  	Department’s Deputy Assistant Chief of Safety, that “another explosion . . .  	took place . . . an hour after the first crash . . . in one of the towers  	here. So obviously . . . he thinks that there were actually devices that  	were planted in the building” (Watson and Perez, 2004). A Wall Street  	Journal reporter said: “I heard this metallic roar, looked up and saw what I  	thought was just a peculiar site of individual floors, one after the other  	exploding outward. I thought to myself, “My God, they’re going to bring the  	building down.” And they, whoever they are, HAD SET CHARGES . . . . I saw  	the explosions” (Shepard and Trost, 2002). BBC reporter Steve Evans said: “I  	was at the base of the second tower . . . that was hit. . . . There was an  	explosion. . . . [T]he base of the building shook. . . . [T]hen when we were  	outside, the second explosion happened and then there was a series of  	explosions” (BBC, Sept. 11, 2001; quoted in Bollyn, 2002).
[37] In June of 2002, NBC television  	played a segment from tapes recorded on 9/11 that contained the following  	exchange involving firefighters in the south tower:
Official: Battalion 3 to dispatch,  	we've just had another explosion.
Official: Battalion 3 to dispatch,  	we've had additional explosion.
Dispatcher: Received battalion command.  	Additional explosion (“911 Tapes Tell Horror Of 9/11,” Part 2, "Tapes  	Released For First Time", NBC, June 17, 2002  	[www.wnbc.com/news/1315651/detail.html ]).
Firefighter Louie Cacchioli reported  	that upon entering the north tower’s lobby, he saw elevator doors completely  	blown out and people being hit with debris. “I remember thinking . . . how  	could this be happening so quickly if a plane hit way above?” When he  	reached the 24th floor, he encountered heavy dust and smoke, which he found  	puzzling in light of the fact that the plane had struck the building over 50  	stories higher. Shortly thereafter, he and another fireman “heard this huge  	explosion that sounded like a bomb. It was such a loud noise, it knocked off  	the lights and stalled the elevator.” After they pried themselves out of the  	elevator, he reported, “another huge explosion like the first one hits. This  	one hits about two minutes later . . . [and] I’m thinking, ‘Oh. My God,  	these bastards put bombs in here like they did in 1993!’ . . . Then as soon  	as we get in the stairwell, I hear another huge explosion like the other  	two. Then I heard bang, bang, bang---huge bangs” (Szymanski, 2005a). A  	briefer account of Cacchioli’s testimony was made available in the Sept. 24,  	2001, issue of People magazine, some of which is quoted in Griffin, 2004,  	Ch. 1, note 74.
[38] Terri Tobin, a lieutenant with the  	NYPD public information office, said that during or just after the collapse  	of the south tower, "all I heard were extremely loud explosions. I thought  	we were being bombed” (Fink and Mathias, 2002, p. 82). A story in the  	Guardian said: “In New York, police and fire officials were carrying out the  	first wave of evacuations when the first of the World Trade Centre towers  	collapsed. Some eyewitnesses reported hearing another explosion just before  	the structure crumbled. Police said that it looked almost like a ‘planned  	implosion’” (Borger, Campbell, Porter, and Millar, 2001).
[39] Teresa Veliz, who worked for a  	software development company, was on the 47th floor of the north tower when  	suddenly “the whole building shook. . . . [Shortly thereafter] the building  	shook again, this time even more violently." Veliz then made it downstairs  	and outside. During this period, she says: “There were explosions going off  	everywhere. I was convinced that there were bombs planted all over the place  	and someone was sitting at a control panel pushing detonator buttons”  	(Murphy, 2002).
William Rodriguez worked as a janitor  	in the north tower. While he was checking in for work in the office on  	sub-level 1 at 9:00 AM, he reports, he and the other 14 people in the office  	heard and felt a massive explosion below them. "When I heard the sound of  	the explosion,” he says, “the floor beneath my feet vibrated, the walls  	started cracking and everything started shaking. . . . Seconds [later], I  	hear another explosion from way above. . . . Although I was unaware at the  	time, this was the airplane hitting the tower.” Then co-worker Felipe David,  	who had been in front of a nearby freight elevator, came into the office  	with severe burns on his face and arms yelling "explosion! explosion!  	explosion!" According to Rodriguez: “He was burned terribly. The skin was  	hanging off his hands and arms. His injuries couldn’t have come from the  	airplane above, but only from a massive explosion below” (Szymanski, 2005b).
Stationary engineer Mike Pecoraro, who  	was working in the north tower’s sixth sub-basement, stated that after his  	co-worker reported seeing lights flicker, they called upstairs to find out  	what happened. They were told that there had been a loud explosion and the  	whole building seemed to shake. Pecoraro and Chino then went up to the C  	level, where there was a small machine shop, but it was gone. "There was  	nothing there but rubble,” said Pecoraro. "We're talking about a 50 ton  	hydraulic press--gone!” They then went to the parking garage, but found that  	it, too, was gone. "There were no walls.” Then on the B Level, they found  	that a steel-and-concrete fire door, which weighed about 300 pounds, was  	wrinkled up "like a piece of aluminum foil." Finally, when they went up to  	the ground floor: “The whole lobby was soot and black, elevator doors were  	missing. The marble was missing off some of the walls” (Chief Engineer,  	2002).
One of the “prevalent claims” of 9/11  	skeptics that Popular Mechanics tries to debunk (see note 11, above) is the  	claim that explosives were detonated in the lower levels of the tower. The  	magazine, however, conveniently ignores the testimonies of Veliz, Rodriguez,  	and Pecoraro.
[40] This expert is Van Romero, vice  	president for research at the New Mexico Institute of Mining and Technology.  	Romero had previously been the director of this institute’s Energetic  	Materials Research and Testing Center, which studies the effects of  	explosions on buildings.
[41] Romero, it is true, changed his  	public stance 10 days later, as announced in Fleck, 2001. But this is not a  	convincing retraction. “Subsequent conversations with structural engineers  	and more detailed looks at the tape,” according to this article, led Romero  	to conclude that “the intense heat of the jet fuel fires weakened the  	skyscrapers' steel structural beams to the point that they gave way under  	the weight of the floors above.” But there is no indication as to what any  	structural engineer said, or what Romero saw in his “more detailed looks at  	the tape,” that led him to change his earlier view that the collapses were  	“too methodical” to have been produced by anything except explosives. There  	is no suggestion as to how weakened beams would have led to a total collapse  	that began suddenly and occurred at virtually free-fall speed. Romero has  	subsequently claimed that he did not change his stance. Rather, he claimed  	that he had been misquoted in the first story. “I was misquoted in saying  	that I thought it was explosives that brought down the building. I only said  	that that's what it looked like” (Popular Mechanics, 2005). But if that is  	the truth, it is strange that the second story, written by Fleck, did not  	say this but instead said that Romero had changed his mind. Romero clearly  	did change his mind---or, to be more precise, his public stance.
A clue to the reason for this change  	may be provided by another statement in the original article, which said  	that when the Pentagon was struck, “[Romero] and Denny Peterson, vice  	president for administration and finance [at New Mexico Tech], were en route  	to an office building near the Pentagon to discuss defense-funded research  	programs at Tech” (Uyttebrouck, 2001). Indeed, as pointed out in a later  	story on the New Mexico Tech website (“Tech Receives $15 M for  	Anti-Terrorism Program”  	[http://infohost.nmt.edu/mainpage/news/2002/25sept03.html ]), the December  	2003 issue of Influence magazine named Romero one of “six lobbyists who made  	an impact in 2003,” adding that “[a] major chunk of [Romero’s] job involves  	lobbying for federal government funding, and if the 2003 fiscal year was any  	indication, Romero was a superstar,” having obtained about $56 million for  	New Mexico Tech in that year alone. In light of the fact that Romero gave no  	scientific reasons for his change of stance, it does not seem unwarranted to  	infer that the real reason was his realization, perhaps forced upon him by  	government officials, that unless he publicly retracted his initial  	statements, his effectiveness in lobbying the federal government for funds  	would be greatly reduced. Romero, to be sure, denies this, saying:  	“Conspiracy theorists came out saying that the government got to me. That is  	the farthest thing from the truth” (Popular Mechanics, 2005). But that, of  	course, is what we would expect Romero to say in either case. He could have  	avoided the charge only by giving a persuasive account of how the buildings  	could have come down, in the manner they did, without explosives.
[42] As Dwyer explained, the oral  	histories “were originally gathered on the order of Thomas Von Essen, who  	was the city fire commissioner on Sept. 11, who said he wanted to preserve  	those accounts before they became reshaped by a collective memory.”
[43] The 9/11 oral histories are  	available at a New York Times website  	(http://graphics8.nytimes.com/packages/html/nyregion/20050812_WTC_GRAPHIC/  	met_WTC_histories_full_01.html). I am heavily indebted to Matthew Everett,  	who located and passed on to me virtually all the statements I have quoted  	from these oral histories.
[44] Like many others, Dixon indicated  	that he later came to accept the official interpretation, adding: “Then I  	guess in some sense of time we looked at it and realized, no, actually it  	just collapsed. That's what blew out the windows, not that there was an  	explosion there but that windows blew out.” I have here, however, focused on  	what the witnesses said they first experienced and thought, as distinct from  	any interpretation they may have later accepted.
[45] Some of the testimonies also  	mentioned the creation of a dust cloud after the explosions. One firefighter  	said: “You heard like loud booms . . . and then we got covered with rubble  	and dust” (NYT, Viola, p. 3). Another said: “That's when hell came down. It  	was like a huge, enormous explosion. . . . The wind rushed. . . , all the  	dust. . . and everything went dark” (NYT, Rivera, p. 7). Lieutenant William  	Wall said: “[W]e heard an explosion. We looked up and the building was  	coming down . . . . We ran a little bit and then we were overtaken by the  	cloud” (NYT, Wall, p. 9). Paramedic Louis Cook, having said that there was  	“an incredible amount of dust and smoke,” added that there was, “without  	exaggerating, a foot and a half of dust on my car” (NYT, Cook, pp. 8, 35).
[46] Even if we were generous to a  	fault and allowed that there might be as high as a 1-in-10 chance (a chance  	much higher than 1-in-100, or 1-in-500) that any one of the 11 features  	could occur without explosives, the chance that all 11 of them would occur  	together would be one in 100 billion. (This calculation with its very  	generous assumption of 1-in-10 does assume the 11 are independent of each  	other. For more completeness, if only 6 were independent while 5 were  	correlated to others, we would still have one chance in a million. Yet, if  	the chance were 1-in-100 and each is independent, we would have one chance  	in ten-to-the-22nd-power.)
Were we to also add in the probability  	that all these features would occur in three buildings on the same day, the  	probability would become so vanishingly small that it would be hardly  	distinguishable from zero.
On the other hand, if explosives were  	used in the buildings, there would be a high probability that all 11  	features would have occurred in all three buildings. For this argument, I am  	indebted to James Fetzer, who---through his essay "'Conspiracy Theories':  	The Case of 9/11"---inspired it, and to Paul Zarembka, who helped with the  	final formulation.
[47] A nice summary of the argument for  	this conclusion has been provided by Nila Sagadevan (e-mail communication of  	November 8, 2005) in response to a person who asked: “Are you saying all the  	floors simply fell down as though there were nothing supporting them?”  	Stating that this is precisely what he was saying, he then suggested the  	following thought-experiment:
Imagine a massive steel cable, lowered  	from a tall crane, firmly secured to the middle of the uppermost (110th)  	floor of one of the towers.
Now, imagine that this floor were  	somehow decoupled from the rest of the structure beneath it.
Summon your personal genie and have him  	make all 109 floors and supporting structures beneath this now-supported  	slab magically disappear.
What we now have is our concrete floor  	slab dangling 1,350 feet up in the sky, suspended by a cable from our  	imaginary crane.
Now, have your genie cut the cable.
Your 110th floor would now freefall  	through the air and impact the ground in about 9 seconds (which is about how  	long it took for the top floors of both towers to reach the ground).
Now, imagine a variation of this  	scenario: We will not decouple the top floor nor dabble with a crane.
Instead, we shall ask our genial genie  	to magically “soften” all the supporting columns of the lower 109 floors.
Wouldn’t every one of these floors and  	their now-softened supporting structures immediately begin to buckle under  	the weight of the 110th floor?
Wouldn’t this buckling significantly  	slow down the descent of the top floor by continuing to offer a degree of  	resistance to its descent?
Wouldn’t these progressive viscous  	“arrests”—-the sagging steel aided by ripping rivets, shearing bolts and  	tearing welds—-slow down the top floor’s fall significantly?
Wouldn’t this cause the top floor to  	take a lot longer than 9 seconds to eventually reach the end of its descent  	and come to rest atop the crushed pile of floors beneath it?
But on September 11, 2001, every floor,  	of every tower, fell as though nothing existed below it but air.
For that to happen, every supporting  	(i.e., resisting) column beneath every collapsing floor would have had to  	have been taken out of the way.
Only well-placed explosives can do  	that.
This is what happens in a controlled  	demolition.
Sagadevan’s point is not significantly  	affected if we say that the collapse time was closer to 15 seconds, since  	that is still very close to free-fall speed through the air.
[48]The official investigators found  	that they had less authority than the clean-up crews, a fact that led the  	Science Committee of the House of Representatives to report that “the lack  	of authority of investigators to impound pieces of steel for examination  	before they were recycled led to the loss of important pieces of evidence”  	(http://www.house.gov/science/hot/wtc/wtc-report/WTC_ch5.pdf).
[49] “Baosteel Will Recycle World Trade  	Center Debris,” Eastday.com, January 24, 2002 (http://www.china.org.cn/english/2002/Jan/25776.htm  	).
[50] This removal was, moreover,  	carried out with the utmost care, because “the loads consisted of highly  	sensitive material.” Each truck was equipped with a Vehicle Location Device,  	connected to GPS. “The software recorded every trip and location, sending  	out alerts if the vehicle traveled off course, arrived late at its  	destination, or deviated from expectations in any other way. . . . One  	driver . . . took an extended lunch break of an hour and a half. . . . [H]e  	was dismissed” (Emigh, 2002).
[51] New York Times, December 25, 2001.  	This protest was echoed by Professor Abolhassan Astaneh-Asl, Professor of  	Civil Engineering at the University of California at Berkeley, who said:  	“Where there is a car accident and two people are killed, you keep the car  	until the trial is over. If a plane crashes, not only do you keep the plane,  	but you assemble all the pieces, take it to a hangar, and put it together.  	That’s only for 200, 300 people, when they die. In this case, you had 3,000  	people dead. You had a major . . . manmade structure. My wish was that we  	had spent whatever it takes. . . . Get all this steel, carry it to a lot.  	Instead of recycling it. . . . After all, this is a crime scene and you have  	to figure out exactly what happened“ (CBS News, March 12, 2002).
[52] Bloomberg was thereby recommending  	precisely what Bill Manning, the editor of Fire Engineering, had warned  	against when he wrote: "As things now stand . . . , the investigation into  	the World Trade Center fire and collapse will amount to paper-and  	computer-generated hypotheticals” (Manning, 2002). What Bloomberg desired  	and Manning feared is exactly what we got with the NIST Report. It is, in  	fact, even worse. Physicist Steven Jones, after pointing out that there are  	“zero examples of fire-caused high-rise collapses” and that even NIST’s  	“actual [computer] models fail to collapse,” asks: “So how does the NIST  	team justify the WTC collapses?” He answers: “Easy, NIST concocted  	computer-generated hypotheticals for very ‘severe’ cases,” and then these  	cases were further modified to get the desired result. The NIST Report,  	Jones adds, admits this, saying on page 142: “The more severe case . . . was  	used for the global analysis of each tower. Complete sets of simulations  	were then performed for [these cases]. To the extent that the simulations  	deviated from the photographic evidence or eyewitness reports [e.g.,  	complete collapse occurred], the investigators adjusted the input” (Jones,  	2006).
[53] “Baosteel Will Recycle World Trade  	Center Debris.”
[54] Bill Manning wrote: “The  	structural damage from the planes and the explosive ignition of jet fuel in  	themselves were not enough to bring down the towers. Fire Engineering has  	good reason to believe that the ‘official investigation’ blessed by FEMA . .  	. is a half-baked farce that may already have been commandeered by political  	forces whose primary interests, to put it mildly, lie far afield of full  	disclosure. Except for the marginal benefit obtained from a three-day,  	visual walk-through of evidence sites conducted by ASCE investigation  	committee members---described by one close source as a ‘tourist trip’---no  	one's checking the evidence for anything” (Manning, 2002).
[55] See the section headed “The ASCE’s  	Disclosures of Steel Sulfidation” in Hoffman, 2005.
[56] For visual evidence, see Hoffman,  	“North Tower Collapse Video Frames: Video Evidence of the North Tower  	Collapse,” 9-11 Research.wtc7.net, n.d. (http://911research.wtc7.net/wtc/evidence/videos/wtc1_close_frames.html  	).
[57] Marvin Bush’s role in the company  	is mentioned in Craig Unger, 2004, p. 249.
[58]Forbes’ statement is posted at 	 	www.apfn.org/apfn/patriotic.htm.
[59] For Giuliani’s complete statement,  	see “Who told Giuliani the WTC Was Going to Collapse on 9/11?”, What Really  	Happened, n.d. (http://www.whatreallyhappened.com/wtc_giuliani.html); it can  	be heard at  	www.wireonfire.com/donpaul .
[60] As Hufschmid points out, “photos  	show the spectacular flames vanished quickly, and then the fire . . . slowly  	diminished” (2002, p. 38).
[61] “If the . . . intention was to  	blame the collapse on the fires,” Peter Meyer has written, “then the latest  	time at which the towers could be collapsed would be just as the fires were  	dying down. Since the fire in the South Tower resulted from the combustion  	of less fuel. . . , the fire in the South Tower began to go out earlier. . .  	. Those controlling the demolition thus had to collapse the South Tower  	before they collapsed the North Tower” (Peter Meyer, n.d.).
[62] Emergency Medical Services (EMS)  	Division Chief John Peruggia said that he was told that the “north tower was  	in danger of a near imminent collapse.” Medical technician Richard Zarrillo,  	evidently a liaison between the OEM and EMS, said that he was told that “the  	buildings are going to collapse.” Fire Marshal Stephen Mosiello and Deputy  	Assistant Chief of Safety Albert Turi also used the plural (“buildings”) in  	reporting what they heard from Zarrillo. Turi reported that when Zarrillo  	was asked “where are we getting these reports?”, his reply was: “you know,  	we’re not sure, OEM is just reporting this” (NYT, Oral Histories of  	Peruggia, Zarrillo, Mosiello, and Turi).
[63] In “A Brief History of New York  	City’s Office of Emergency Management,” we read: “1996: By executive order,  	the Mayor's Office of Emergency Management is created. The Director reports  	directly to the Mayor, and serves as the local Director of Civil Defense” (  	 	http://www.nyc.gov/html/oem/html/other/oem_history.html  ).
[64] “The city . . . initially refused  	access to the records to investigators from . . . the 9/11 Commission” but  	“relented when legal action was threatened” (Dwyer, 2005b).
[65] Glanz (2001) wrote that “[e]xperts  	said no building like it, a modern, steel-reinforced high-rise, had ever  	collapsed because of an uncontrolled fire.”
[66]For photographs and discussion, see  	Hufschmid, 2002, pp. 62-65, and the section entitled “The ‘Raging’ Fires at  	WTC Tower Seven” in “The World Trade Center Fires (Not So Hot Eh?),” Global  	Research, September 27, 2004 (http://globalresearch.ca.myforums.net/viewtopic.php?t=523  	).
[67]FEMA, 2002, Ch. 5, Sect. 6.2,  	“Probable Collapse Sequence,” discussed in Griffin, 2004, p. 22.
[68] Hufschmid, 2002, p. 64. The  	collapse of building 7 also had all the other features of conventional  	demolitions, such as beginning suddenly and then going down at virtually  	free-fall speed---which in this case meant under 7 seconds. This similarity  	to conventional implosions was commented on by Dan Rather. Showing a video  	of the collapse of building 7 on CBS that very evening, Rather said that it  	was “reminiscent of those pictures we've all seen too much on television  	before when a building was deliberately destroyed by well-placed dynamite to  	knock it down” (CBS News, September 11, 2001). Videos of the collapse of  	building 7, which have seldom appeared on mainstream television, can be  	viewed at various websites, including  	 	www.geocities.com/killtown/wtc7.html
and www.whatreallyhappened.com/wtc7.html. Particularly good for this purpose is Eric Hufschmid’s DVD, “Painful Deceptions” (available at www.EricHufschmid.Net).
and www.whatreallyhappened.com/wtc7.html. Particularly good for this purpose is Eric Hufschmid’s DVD, “Painful Deceptions” (available at www.EricHufschmid.Net).
[69] Implosion World.com ( 	 	http://www.implosionworld.com/dyk2.html  ).
[70] Steven Jones, e-mail letter,  	October 10, 2005.
[71] See Norman, 2002, and Firehouse  	Magazine, 2002a and 2002b.
[72] Chief Frank Fellini said that the  	collapse zone was established “five or six hours” before the building came  	down, which would have been around noon (NYT, Fellini, p. 3). This time fits  	with the testimony of a firefighter who said he “heard reports all day long  	of 7 World Trade possibly coming down” and of another who said: “We hung out  	for hours waiting for seven to come down” (NYT, Murray, p. 12, and Massa,  	pp. 17-18).
[73] Even earthquakes, which have  	produced some partial collapses, have never produced total collapses.
[74] “[F]ederal investigators concluded  	that it had been primarily the impact of the planes and, more specifically,  	the extreme fires that spread in their wake, that had caused the buildings  	to fall. . . . After the planes hit, . . . [m]uch of the spray-on  	fireproofing in the impact zone was dislodged, leaving the structural steel  	exposed and mortally vulnerable to the intense heat” (Dwyer and Flynn, 2005,  	p. 252). These co-authors (p. 253) even endorse NIST’s claim—-which is  	totally unsupported (Hoffman, 2005)--that the collapses became “inevitable.”
[75] Dwyer, in fact, wrote an article  	entitled “Vast Archive Yields New View of 9/11,” New York Times, August 13,  	2005 ( 	 	http://www.nytimes.com/2005/08/13/nyregion/nyregionspecial3/13records.html?ex=1131339600&en=e619ef623287178f&ei=5070
). But he did not mention the “new view” that would be suggested by the testimonies about explosions.
). But he did not mention the “new view” that would be suggested by the testimonies about explosions.
[76] Silverstein’s statement has been  	quoted in many places, including Morgan and Henshall (2005). A critique of  	this book entitled “9/11 Revealed? New Book Repeats False Conspiracy  	Theories,” put out by the U.S. State Department (http://usinfo.state.gov/media/Archive/2005/Sep/16-241966.html  	), claims that “[t]he property owner was referring to pulling a contingent  	of firefighters out of the building in order to save lives because it  	appeared unstable.” But that is hardly a plausible interpretation,  	especially given the following sentence and the fact that elsewhere during  	the documentary (PBS, 2002), we hear the expression clearly used to mean  	“bring the building down.”
[77] Silverstein’s statement can be  	viewed (http://www.infowars.com/Video/911/wtc7_pbs.WMV) or heard on audio  	file (http://VestigialConscience.com/PullIt.mp3). For a discussion, see  	Baker, n.d.
[78] Currid, incidentally, was  	re-elected president in 2002 (http://www.uniondemocracy.com/UDR/34-NYC%20Public%20Employees.htm  	).
[79] Letter to the LA Times Magazine,  	September 18, 2005, by William Yarchin of Huntington Beach, California, in  	response to an interview with me in that magazine, conducted by Mark Ehrman,  	entitled “Getting Agnostic about 9/11,” published August 28, 2005.
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