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Thermite

Academic Papers on 9/11

Compiled by University of Waterloo 9/11 Research Group

The following articles are peer-reviewed journal papers that address issues surrounding the day of 9/11/2001 from a critical perspective. Academics are encouraged to take an interest in 9/11 research.

March 2012 | Launching the U.S. Terror War: the CIA, 9/11, Afghanistan, and Central Asia
Journal: The Asia-Pacific Journal
Author: Dr. Peter Dale Scott (University of California, Berkeley)
Link: http://japanfocus.org/-Peter_Dale-Scott/3723

February 2012 | Temporal Considerations in Collapse of WTC Towers
Journal: Int. J. Structural Engineering, Vol. 3, No. 3, pp.189-207
Author: Dr. Gregory Szuladzinski (PhD, Structural Mechanics; FEIA & Member of ASCE)
Link: http://www.inderscience.com/offer.php?id=47711

September 2011 | Conspiracy Theories and Stylized Facts
Journal: Journal for Peace and Justice Studies 21.2 (Fall 2011)
Author: Dr. Kurtis Hagen (SUNY)
Link: http://911blogger.com/news/2012-01-19/another-peer-reviewed-publication-conspiracy-theories-and-stylized-facts

June 2011 | Was There Abnormal Trading in the S&P 500 Index Options Prior to the September 11 Attacks?
Journal: Multinational Finance Journal, 2011, vol. 15, no. 1/2, pp. 1-46
Authors: Wing-Keung Wong (Hong Kong Baptist University) and Dr. Howard E. Thompson (University of Wisconsin) et al
Link: http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1588523

May 2011 | Review of David Ray Griffin’s Cognitive Infiltration:
An Obama Appointee’s Plan to Undermine the 9/11 Conspiracy Theory

Journal: Florida Philosophical Review (Volume XI, Issue 1, Summer 2011)
Author: Dr. Kurtis Hagen (SUNY Plattsburgh)
Link: http://philosophy.cah.ucf.edu/fpr/files/11_1/hagen.pdf

April 2011 | Collapse Time Analysis of Multi-Story Structural Steel Buildings
Journal: The Open Civil Engineering Journal (Bentham Open)
Authors: Dr. Robert Korol (McMaster University) et al
Link: http://www.benthamscience.com/open/tociej/articles/V005/25TOCIEJ.pdf

January 2011 | The Response of Cultural Studies… Continue reading

The explosive nature of nanothermite

by Kevin Ryan
Digwithin.net

In the last few years, a series of peer-reviewed scientific articles has been published that establish the presence of thermitic materials at the World Trade Center (WTC). [A-D]

Although we know that nanothermite has been found in the WTC dust, we do not know what purpose it served in the deceptive demolition of the WTC buildings. It could be that the nanothermite was used simply to drive fires in the impact zones and elevator areas — fires which would otherwise have gone out too early or not been present at all — and thereby create the deception that jet fuel-induced fires could wreak the havoc seen. Nanothermite might also have been used to produce the explosions necessary to destroy the structural integrity of the buildings.

Nanothermite, also called superthermite, is the common name for a subset of metastable intermolecular composites (MICs) characterized by a highly exothermic reaction after ignition. Nanothermites contain an oxidizer and a reducing agent that are intimately mixed on the nanometer scale. Such nano-energetics are produced for various applications including propellants, explosives, and pyrotechnics.

There are various ways to make nanothermites. They can be made as solid mixtures of aluminum and metal oxides which are typically produced using techniques like dynamic vapor phase condensation and arrested reactive milling. These mixtures are much like typical thermite mixtures, but with the components introduced on a much smaller scale. Alternatively, nanothermites can be made in a liquid solution that later gels, capturing the reactive components in… Continue reading

Responses to questions re thermite, nanothermite, conventional explosives used in the WTC destruction

May 10, 2011
Dr. Steven Jones
Blog at 911blogger.com

Here I field questions that come to me fairly often, to help get the facts out and to counter misrepresentations and misunderstandings. I expect to make edits for a while and welcome comments.

1. Can nanothermites (also called superthermites) be explosive?

The definition of “explosive” can lead to endless debates. Is a flash of light required? Is a loud sound required? How loud? What rate of energy generation is required for a material to be called an explosive? Where is the line between low explosives and high explosives? Rather than getting mired into ad nauseum debates, I will use the term  “explosive” in conjunction with superthermites/nanothermites IF the national defense laboratories which developed these materials use the term. Here we go.

“Researchers can greatly increase the power of weapons by adding materials known as superthermites that combine nanometals such as nanoaluminum with metal oxides such as iron oxide, according to Steven Son, a project leader in the Explosives Science and Technology group at Los Alamos. “The advantage (of using nanometals) is in how fast you can get their energy out,” Son says. Son says that the chemical reactions of superthermites are faster and therefore release greater amounts of energy more rapidly… Son, who has been working on nanoenergetics for more than three years, says that scientists can engineer nanoaluminum powders with different particle sizes to vary the energy release rates. This enables the material to be used in many applications, including underwater explosive devices… However, researchers aren’t permitted to discuss what practical military applications may come from this research.” (Gartner, John (2005).…

Continue reading

Interview with Dr. Niels Harrit on Discovery of Nano-Thermite in WTC Dust

by Jeremy R. Hammond
March 7, 2011
Foreignpolicyjournal.com

 

Face to Face with Dr. Niels Harrit: “There is no doubt that this building was taken down in a controlled demolition…” from I.C.T.V. Victoria on Vimeo.

Dr. Niels Harrit is a retired associate professor of chemistry at the University of Copenhagen and one among an international team of scientists who published a paper in The Open Chemical Physics Journal on the discovery of nano-thermite
in the dust from the World Trade Center collapses on September 11, 2001. He has recently finished a lecture tour of Canadian universities, where he spoke on the subject.

In this interview on the cable program Face to Face with Jack Etkin, Dr. Harrit discusses this finding and its implications. Dr. Harrit notes that World Trade Center building 7 (WTC 7), a 47-story steel-framed skyscraper that was not hit by one of the planes on 9/11, collapsed symmetrically into its own footprint, and that the official explanation for this is that it was due to fire. However, the finding of nano-thermite in the dust, along with other available evidence, leads inescapably to another conclusion. “There is no doubt that this building was taken down in a controlled demolition,” says Dr. Harrit. “I consider this to be [a] mainstream scientific conclusion. There’s no way around this conclusion. There are so many observations that are only compatible with a controlled demolition.”

“Science is based on observation and experience,” says Dr. Harrit in the interview. Point out that it… Continue reading

AE911Truth Delivers the Evidence to the Media: Press Conference – National Press Club

Richard Gage, AIA, and Gregg Roberts
Monday, 04 October 2010
AE911truth.org

This is the actual 10-minute statement read by Richard Gage, AIA, to the media at the AE911Truth press conference at the National Press Club in Washington DC on September 9, 2010.

Good afternoon, my name is Richard Gage, AIA. I’m a member of the American Institute of Architects; I’ve been a licensed architect for 22 years; And I’m the founder of the non-profit organization, Architects & Engineers for 9/11 Truth (AE911Truth).

As a group, we now have more than 1,270 architect and engineer petition signers. Collectively, we have more than 25,000 years of building and technical experience. This press conference is being given by our petition signers and supporters today in 65 [it turned out to be 67] locations around the world, including 30 states and 4 countries.

Today, we’re here to inform you that we have uncovered evidence that the official investigations into what happened to the World Trade Center skyscrapers on 9/11 were deeply flawed, or worse. The scientific forensic facts we have discovered have very troubling implications.

For example, a technologically advanced, highly energetic material has been discovered in World Trade Center dust from the 9/11 catastrophe.

This follows the discovery, by the United States Geological Survey and others, of high concentrations of unusual previously molten iron-rich microspheres in the WTC dust. These microspheres can only have been formed during the destruction of the World Trade Center at temperatures far higher than can… Continue reading

New Research on State Crimes Against Democracy

By Peter Phillips and Mickey Huff
DailyCensored.com

New research in the journal American Behavioral Scientist (Sage publications, February 2010) addresses the concept of “State Crimes Against Democracy” (SCAD). Professor Lance deHaven-Smith from Florida State University writes that SCADs involve highlevel government officials, often in combination with private interests, that engage in covert activities for political advantages and power. Proven SCADs since World War II include McCarthyism (fabrication of evidence of a communist infiltration), Gulf of Tonkin Resolution (President Johnson and Robert McNamara falsely claimed North Vietnam attacked a US ship), burglary of the office of Daniel Ellsberg’s psychiatrist in effort to discredit Ellsberg, the Watergate break-in, Iran-Contra, Florida’s 2000 Election (felon disenfranchisement program), and fixed intelligence on WMDs to justify the Iraq War. 1

Other suspected SCADs include the assassination of Lee Harvey Oswald, the shooting of George Wallace, the October Surprise near the end of the Carter presidency, military grade anthrax mailed to Senators Tom Daschle and Patrick Leahy, Martin Luther King’s assassination, and the collapse of World Trade Center Building 7 on September 11, 2001. The proven SCADs have a long trail of congressional hearings, public records, and academic research establishing the truth of the activities. The suspected SCADs listed above have substantial evidence of covert actions with countervailing deniability that tend to leave the facts in dispute. 2

The term “conspiracy theory” is often used to denigrate and discredit inquiry into the veracity of suspected SCADs. Labeling SCAD research as “conspiracy theory” is an effective method of… Continue reading

National Geographic special on 9/11, exchange of emails with Robert Erickson, producer (3/2009)

Posted by Steven Jones at 911blogger.com

A special on 9/11 has just been shown on the National Geographic Channel, produced by Robert Erickson. Robert also conducted interviews with me and others. In March 2009, Prof. David Ray Griffin and I and Gregg Roberts exchanged emails with Robert Erickson which demonstrate our efforts to get Mr. Erickson and his team to be accurate and fair in their treatment of our scientific work regarding 9/11 — particularly the evidence for the use of explosives in the World Trade Center destruction. For the record, then, I have pulled together our exchanges of emails.

Robert Erickson, emailed David Ray Griffin on 3/27/09:
“if Jones is surprised that we just placed bags of thermite around the column…what else would Jones have suggested? ”

I was informed of the question above and I responded on 3/28/09 as follows:

Robert,

Bags of commercial thermite set against a steel column — what a pathetic “experiment.” Not anywhere close to representing my views, as you must know, from our discussion about the red/gray chips and the crucial distinction between ordinary thermite and super-thermite! What a terrible and unfair straw-man joke you are evidently trying to pull.

Why can’t you get a sample of super-thermite? I think you can, if you will actually try. Or are you like NIST which refuses to look?

1. http://awards.lanl.gov/PDFfiles/Super-Thermite_Electric_Matches_2003.pdf
[quoting]
Super-Thermite Electric Matches
Applications

The principal application is in the entertainment industry, which uses fireworks displays for a variety of venues, such as sporting… Continue reading

What in the World is High-Tech Explosive Material Doing in the Dust from 9/11?

by John-Michael P. Talboo
911debunkers.blogspot.com/

Big thanks to YouTube user SmallButLethal for this compilation. SmallButLethal YouTube.com July 02, 2009

A lecture given by Dr. Steven E. Jones in Sacramento, California on April 30, 2009. This talk reveals the discovery of Nano-thermite in the dust from the 9/11 catastrophe. Standard thermite is an incendiary compound invented in 1893 and is made by mixing powders of iron oxide (rust) and aluminum. Once ignited, the aluminum grabs and bonds to the oxygen from the iron oxide. This reaction releases clouds of aluminum oxide and generates very high temperatures in the elemental iron. This high temperature iron easily melts steel. Tiny spheres of iron were also discovered in the World Trade Center dust and are evidence that a thermite reaction took place on 9/11. Nano-thermite, a highly engineered energetic composite was conceived around 1990 and by 2000 it had been weaponized and was manufactured in large quantities in top secret military laboratories. This nano form of thermite does not just burn extremely hot, it is explosive. In this video, Dr. Steven Jones announces the publication of the recent paper ‘Active Thermitic Material Discovered in the Dust from the 9/11 Catastrophe’ published April, 2009. The implications of this peer reviewed paper are profound. Steven Jones also updates us on various facets of the quest to repudiate the ‘official conspiracy theory’ i.e. the Government/Mainstream media version of what happened on 9/11, and describes current efforts the create a legitimate investigation with real subpoena power.

The peer… Continue reading

Nanothermite Demolishes 9/11 Conspiracy Theories

by John-Michael Talboo

Debunking the Debunkers

See story source, 911debunkers.blogspot.com, for factual back-up, sources, and further research materials.

A Basic Chemistry Lesson with Dr. Niels Harrit

Transcript from Visibility 9-11
As recorded on Visibility 9-11 with Michael Wolsey, April 8, 2009
Full interview with notes found here.

Photo of Niels Harritt

Transcript:
Niels H. Harrit on Visibility 9-11
April 10, 2009

 

Niels Harrit on Visibility911

Beginning at 17:10 -

Michael Wolsey: Now, I took many classes in college and one of my science requirements that I had to take was indeed an introductory chemistry class, so I am not a complete idiot when it comes to chemistry, but I know that many of the listeners out there may never have taken a college class in chemistry so I thought it might be helpful to…maybe you could give folks a little bit of basic chemistry lesson and lets maybe take a well known chemical reaction that folks can relate to and maybe explain that.

Dr. Niels H. Harrit: The key word is nano thermite. I would split that in two and take the thermite first. Combustion; the campfire burning…because what is happening in the thermite is basically the same thing as when the campfire is burning. Heat is developed and the carbon in the wood is reacting with the oxygen of the atmosphere, and it is basically the same reaction going on in thermite. Wood burning is something that everyone is related to. Ya know wood is basically is carbon, it’s like coal burning. And when coal or gasoline or wood is burning it is reacting… Continue reading

What you need to know about “Peer-review”

Steven Jones
911blogger.com

Since the days of Sir Isaac Newton, Science has proceeded through the publication of peer-reviewed papers. Peer-review means a thorough reading, commentary and even challenge before publication by “peers”, that is, other PhD’s and professors. This paper was thoroughly peer-reviewed with several pages of tough comments that required of our team MONTHS of additional experiments and studies. It was the toughest peer-review I’ve ever had, including THREE papers for which I was first author in NATURE. (Please note that Prof. Harrit is first author on this paper.) We sought an established journal that would allow us a LONG paper (this paper is 25 pages long) with MANY COLOR IMAGES AND GRAPHS. Such a scientific journal is not easy to find. Page charges are common for scientific journals these days, and are typically paid by the University of the first or second author (as is the case with this paper) or by an external grant.

Show Editor’s Note: »

A peer-reviewed journal is also called a “refereed” journal. Peer-reviewers are almost always anonymous for scientific publications like this — that is standard in the scientific world. While authors commonly… Continue reading

Danish scientist: nano explosive material found in the dust from the World Trade Center

3. April 2009
By Thomas Hoffman
videnskab.dk
English (rough) translation via google translate

World Trade Center crashed perhaps gravel because someone had placed combustible nano materials in the buildings, and not because the two aircraft were throbbing in them. Analysis of the dust after the WTC has just published a scientific article, including Neils Harrit, a Danish chemist.

Editor’s Note:
Following is an April 3 article by Thomas Hoffman published in Danish (reprinted here in English via google translate) at Videnskab.dk regarding the “Active Thermitic Material Discovered” paper published last week. One of the article’s nine authors is Niels Harrit, Associate Professor of Chemistry Institute of the University of Copenhagen. After the initial article is an interview with Professor Harrit.

 

Photo of WTC collapse

Photo: Asbestos and glass flew around New York streets when the Twin Towers collapsed after the attack on the World Trade Center 11 September 2001. Now it appears that these materials had company in the dust of højenergetisk material which might have melted the supporting structure of the Twin Towers. (Photo: Federal Emergency Management Agency)

It was apparently not only office equipment, walls and ceilings, which were pulverized and spread over large parts of Manhattan as the World Trade Center in 2001 was hit by two aircraft during a violent terrorist attacks against the United States.

The dust contained, according to a scientific article also traces of well-nanothermit – a custom-made material with so much energy that it can develop tremendous heat and be decidedly explosive (see box at… Continue reading

Study: Scientists Discover Active Thermitic Material in WTC Dust

FOR IMMEDIATE RELEASE
Contact: Victoria Ashley, STJ911 committee member
Phone: 510-769-5109
Site: www.STJ911.org

Email: stj911@gmail.com

Editor’s Note:
Scholars for 9/11 Truth and Justice have issued the following press release re. the paper published last week in the Open Civil Engineering Journal. Please pass this along quickly and thoroughly.

Study: Scientists Discover Active Thermitic Material in WTC Dust

Berkeley, CA, April 3, 2009 — A new study by independent scientists and researchers suggests the cause behind the catastrophic destruction of World Trade Center Towers on September 11th can be seen in the dust itself: active thermitic material, a highly engineered explosive.

The study, published today in The Open Chemical Physics Journal , describes a finding of “red/gray bi-layered chips” in samples of dust taken from vicinity of the World Trade Center following its destruction. Using tools such as a scanning electron microscope (SEM) and x-ray energy dispersive spectroscopy (XEDS) to analyze the material, the study authors concluded that, “the red portion of these chips is found to be an unreacted thermitic material and highly energetic.”

The study’s finding lends new support to the demolition theory put forth by critics of the official reports.

At a time when the American public is finding it difficult to understand the full story behind the current economic crisis, findings of a demolition raise new questions about how the ‘War on Terror’ — an enormous source of recent American spending — was started.

Officials with the National Institute of Standards and Technology (NIST), charged with establishing… Continue reading

Another Peer Reviewed Paper Published in Scientific Journal – ‘Active Thermitic Material Discovered in Dust…’

911blogger.com
From Dr. Steven Jones

Image of RedGray Chips
A back-scattered electron (BSE) image featured in the newly published paper.

“Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe” by Niels H. Harrit, Jeffrey Farrer, Steven E. Jones, Kevin R. Ryan, Frank M. Legge, Daniel Farnsworth, Gregg Roberts, James R. Gourley and Bradley R. Larsen

The paper ends with this sentence: “Based on these observations, we conclude that the red layer of the red/gray chips we have discovered in the WTC dust is active, unreacted thermitic material, incorporating nanotechnology, and is a highly energetic pyrotechnic or explosive material.”

 

Editor’s Note:
Please Digg and Reddit and post on other community sites. Steve Jones has been commenting further at 911blogger.com and asking for scientifically-based comments to be added there. If you are not already registered user at 911blogger.com, contact the site editor here.In addition, Jones and Ryan have been interviewed by Michael Wolsey at Visibility911.com — links follow.

In short, the paper explodes the official story that “no evidence” exists for explosive/pyrotechnic materials in the WTC buildings.

What is high-tech explosive/pyrotechnic material in large quantities doing in the WTC dust? Who made tons of this stuff and why? Why have government investigators refused to look for explosive residues in the WTC aftermath?

These are central questions raised by this scientific study.

The peer-review on this paper was grueling, with pages of comments by referees. The tough questions the reviewers raised led to months of further experiments. These studies… Continue reading

LIVE Interview with Physicist Steven Jones

Physics professor Dr. Steven Jones was forced out of Brigham Young University for his research suggesting the World Trade Center was destroyed by controlled demolition. Dr. Jones is the lead author of the first two scholarly articles in mainstream academic journals disputing the official story of 9/11 — and a third is on the way! Kevin Ryan told us during his interview Tuesday, March 3rd that the upcoming article will include research by many respected scientists worldwide, and will for all intents and purposes seal the case that nanothermates were used in the controlled demolition of the WTC.

First mainstream academic 9/11 truth publication: 14 Points of Agreement with Official Government Reports on the World Trade Center Destruction.

Second mainstream 9/11 truth publication: Environmental Anomalies at the World Trade Center: Evidence for Energetic Materials:
http://911reports.wordpress.com/2008/09/17/environmental-anomalies-at-the-world-trade-center-evidence-for-energetic-materials-by-kevin-r-ryan-james-r-gourley-and-steven-e-jones/.

Journal of 9/11 Studies: http://www.journalof911studies.com

Scholars for 9/11 Truth and Justice: http://www.stj911.org

“FAIR & BALANCED” with Kevin Barrett features Steven Jones

Tuesday, March 10th, 2009, 9:00 am Pacific – 12:00 Noon Eastern – 16:00 GMT

Listen live at http://noliesradio.org (or http://67.18.54.205/~nolies)

The interview will be archived for later listening after the broadcast.

Deadline for emailed questions is 9pm Pacific Time, Monday, March 9th. Not all emailed questions will be answered on the air. Email your questions now: (fb@noliesradio.org)

Note from NoLiesRadio: Fair & Balanced with Kevin Barrett is independently produced and hosted by Kevin Barrett and these shows are externally produced content. All externally produced content broadcast on No… Continue reading

Nanothermites and WTC dust

by Kevin Ryan
December 27, 2008
Kevin Ryan’s Blog at 911Blogger.com

This past year I’ve done some photomicroscopy of samples of WTC dust. A number of examples of the photos can be found in the latest AE911truth.org video. The related scientific analyses of the particles found in the WTC dust, in particular the red-gray chips first discovered by Professor Steven Jones, are ongoing.

But I’ve also spent some time making nanothermites, and igniting them. Here is a slideshow of 26 photomicrographs, half of which are nanothermite residues and half of which are ferromagnetic particles extracted from WTC dust samples. These photos share many things in common, including the presence of metallic microspheres, vesicular formations and red-orange chips. Sometimes it’s hard to remember which photo belongs to which category. If the nanothermite residues were mixed with concrete dust and glass fragments, it would likely be much more difficult to notice any differences.

You can see the slideshow here: http://www.flickr.com/photos/32512879@N05/sets/72157611572140729/show/
.

Interesting stuff, to be sure. And many thanks to Professor Jones, Janette MacKinlay, Shane Geiger, Mike Berger and others for the samples and inspiration. Scientific papers are on the way, of course, but sharing some of the photos now is worthwhile I think. Here’s to a truthful New Year!

Nanothermite (C) ignition photo:

The Top Ten Connections Between NIST and Nano-Thermites

From Steven Jones
July 4, 2008

Kevin Ryan shows his skills as both a chemist and a “private investigator” in his paper, “The Top Ten Connections Between NIST and Nano-Thermites” — Published July 4, 2008, in the Journal of 9/11 Studieshttp://journalof911studies.com/volume/2008/Ryan_NIST_and_Nano-1.pdf.

Kevin Ryan discusses nano-thermite (“super-thermite”) and provides very important results of his own investigation of connections between NIST and researchers studying/developing nano-thermite.

Several of us have been discussing nano-thermite for quite a while now. For instance, I announced in Boston last year the observation of red-gray chips which I found in WTC dust samples. (If you need to catch up, please see this short video: http://video.google.com/videoplay?docid=-4186920967571123147&hl=en). Research papers on this material are now being written/reviewed for publication.

Thermite is comprised of aluminum powder and iron oxide powder (or another metal oxide). When the powders are “ultra-fine grain,” less than about 100 nano-meters, then nano-thermite is formed. This form of thermite, also known as “super-thermite,” is not just an incendiary — it is EXPLOSIVE!

I explained this distinction and even gave references to the explosive nature of super-thermite/nano-thermite in my first-published paper on 9/11, available here: Why Indeed Did theWTC Buildings Completely Collapse.

Here’s a quote from that paper, pp. 16-17 (hope you all have read it, or will do so!):

‘Researchers can greatly increase the power of weapons by adding materials known as superthermites that combine nanometals such as nanoaluminum with metal oxides such as iron oxide, according to Steven Son, a project… Continue reading

Arizona Senator Karen Johnson: ‘We deserve the full truth about 9/11′

We deserve the full truth about 9/11
Tale of Building 7′s collapse suggests official complicity, persistent obstruction

Regarding “Drinking the 9/11 Kool-Aid” (Editorial, April 24):

After three government investigations and more than six years, we still don’t have answers on 9/11.

Why, for example, did Building 7 collapse? It wasn’t hit by a plane, as the towers were. The 9/11 Commission Report completely ignores Building 7. The Federal Emergency Management Agency report discounts fire as a cause and concludes that the reasons for the collapse of Building 7 are unknown and require further research. But when FEMA issued this report, it already cleared the site and disposed of the dust and steel (evidence from a crime scene), thus possibly committing a felony and complicating any “further research.”

The National Institute of Standards and Technology, a federal agency, which evaluated the collapse of the towers, has yet to issue its report on Building 7. “We’ve had trouble getting a handle on Building 7,” said the acting director of their Building and Fire Research Lab.

Yet a number of private-sector engineers, architects, and demolition experts have not had that problem. They think Building 7 came down by controlled demolition. The building collapsed suddenly, straight down, at nearly free-fall speed. People heard the explosions, and saw the squibs and the characteristic billowing clouds of pulverized concrete so unique to demolitions. There is no reason to think that Building 7 came down for any other reason than explosive demolition.

And speaking of pulverized concrete,… Continue reading