Based on chemical analysis of World Trade Center structural steel residue, a Brigham Young University physics professor has identified the material as Thermite. Thermite is the controlled demolition explosive thermite plus sulfur. Sulfur cases the thermite to burn hotter, cutting steel quickly and leaving trails of yellow colored residue.

Prof. Steven Jones, who conducted his PhD research at the Stanford Linear Accelerator Center and post-doctoral research at Cornell University and the Los Alamos Meson Physics Facility, has analyzed materials from WTC and has detected the existence of thermite, this explosive was used for "cutting" the steel support columns, as evident in the photo below with residue of the thermite showing.

Dr. Jones is a co-founder of Scholars for 911 Truth.

World Trade Center steel column with diagonal cut and thermite residue

Dr. Jones in earlier work pointed to thermate as the likely explosive that brought down the WTC1, WTC2, and WTC7 skyscrapers. But only recently was physical material analyzed in the lab and the presence of thermate announced. The samples were provided Dr. Jones team from redundant sources.

Both BYU and Prof. Jones have been offered additional grants if he would "change the direction" of his research. In addition, there have been threats made by an individual who "is taking action" to stop Steven Jones' research, specifically his experiment with thermites (aluminothermics), on the grounds his work may be helpful to "terrorists". Jones notes that much more detailed information on both thermite and thermate is readily available on the internet.