The World Trade Center Building Performance Study: Data Collection, Preliminary Observations, and Recommendations, has a wealth of information. Unfortunately, that information has been presented in a wholly unscientific manner that is shameful at best, criminal at worst.
For those who may be curious, Dr. Judy Wood has published the first and only forensic Investigation into the events of Sept. 11, 2001. After reading her book, 'Where Did The Towers Go?' the events behind The Destruction of the twin towers and the World Trade Center Complex will come into much sharper focus. Head over to DrJudyWood(dot)com and WhereDidtheTowersGo(dot)com for the Evidence.
The Photographs, among other evidences presented in this study, are invaluable as a resource for those who might seek to find the 'pearls of wisdom' which are hidden under "truth's protective layers". But as a whole, this book is a work of Fiction.
Where Did the Towers Go? Evidence of Directed Free-energy Technology on 9/11