And yet all kinds of people -- I mean, for instance, the writers at Popular Mechanics -- none of whom were engineers -- felt compelled to write this long analysis about how, you know, everyting that the 9/11 truth movement is about is bogus. Well, they don't really know what they're talking about. They haven't been training in this profession. They don't know -- I doubt that they could tell you the laws of phyisics that were involved, or the characteristics of explosives or the chemical analysis. They feel free to speak out on this and defame our profession, and they have no basis to do so. That's really what drives me to try to do something about this.

PM consulted more than 300 experts and organizations in its investigation into 9/11 conspiracy theories. The following were particularly helpful.

Air Crash Analysis
*snip*
Air Defense
*snip*
Aviation
*snip*
Image Analysis
*snip*
Structural Engineering / Building Collapse

Farid Alfawakhiri, Ph.D. senior engineer, American Institute of Steel Construction

David Biggs, P.E. structural engineer, Ryan-Biggs Associates; member, ASCE team for FEMA report

Robert Clarke structural engineer, Controlled Demolitions Group Ltd.

Glenn Corbett technical editor, Fire Engineering; member, NIST advisory committee

Vincent Dunn deputy fire chief (Ret.), FDNY; author, The Collapse Of Burning Buildings: A Guide To Fireground Safety

John Fisher, Ph.D. professor of civil engineering, Lehigh University; professor emeritus, Center for Advanced Technology; member, FEMA Probe Team

Ken Hays executive vice president, Masonry Arts

Christoph Hoffmann, Ph.D. professor of computer science, Purdue University; project director, September 11 Pentagon Attack Simulations Using LS-Dyna, Purdue University

Allyn E. Kilsheimer, P.E.
CEO, KCE Structural Engineers PC; chief structural engineer, Phoenix project; expert in blast recovery, concrete structures, emergency response

Won-Young Kim, Ph.D. seismologist, Lamont-Doherty Earth Observatory, Columbia University

William Koplitz photo desk manager, FEMA

John Labriola freelance photographer, WTC survivor

Arthur Lerner-Lam, Ph.D. seismologist; director,
Earth Institute, Center for Hazards and Risk Research, Columbia University

James Quintiere, Ph.D. professor of engineering, University of Maryland member, NIST advisory committee

Steve Riskus freelance photographer; eyewitness, Pentagon crash

Van Romero, Ph.D. vice president, New Mexico Institute of Mining and Technology

Christine Shaffer spokesperson, Viracon

Mete Sozen, Ph.D., S.E. Kettelhut Distinguished Professor of Structural Engineering, Purdue University; member, Pentagon Building Performance Report; project conception, September 11 Pentagon Attack Simulations Using LS-Dyna, Purdue University

Shyam Sunder, Sc.D.
acting deputy director, lead investigator, Building and Fire Research Laboratory, National Institute of Standards and Technology

Mary Tobin science writer, media relations, Earth Institute, Columbia University

Forman Williams, Ph.D. professor of engineering, physics, combustion, University of California,
San Diego; member, advisory committee, National Institute of Standard