Dr. Heinz Pommer has conducted the most impressive and comprehensive inquiry into the physics of the terrorist attacks of 11th September 2001 in New York.
His research is of interest to citizen-architects and citizen-engineers who are concerned with preserving the ethics of their profession.
A remarquable aspect of Dr. Pommer's work, in addition to the depth and breadth of his own research, is his unique effort to reconcile his own findings with those of other researchers like the Architects and Engineers for 9/11 Truth, and several others.
We can without a doubt call this entire body of work (Pommer and many others)"the public inquiry on 9/11", because unlike the NIST in the US or various government-produced, so-called "declassified intelligence reports" they disclose all their data, sources and references, enabling anyone willing, to verify whatever point they are interested in, all by themselves, and therefore also to add or correct any omission or error that may have entered, like it does into any human work. So this huge and humble effort, like the magnificent work done by Architects and Engineers for 9/11 Truth since 2008, is a scientific, educational, and ethical effort all at the same time, and can only produce the best possible results.
This collaborative effort goes into the direction that science, education and ethics must take, if it want to thrive in the human culture.
The other aspects (administrative, political, financial, health, aviation...) of the public inquiry are treated very seriously elsewhere by other authors, in different formats (reports, books, articles, films...) and they are far too many to be listed here.
But as far as physics is concerned, you can read:
http://www.911history.de/aaannxyz_ch01_en.html