Thermite and Liquid Nitrogen

One of you asked about this idea as an experiment.  Seems like this is best to watch someone else do, rather than handle the dangerous thermite yourself, at least until you know how to handle it safely.

Thermite is commonly used to melt steel, really fast, like during the controlled demolition of a skyscraper made with steel columns.  Many scientists and engineers (http://www.ae911truth.org/)  figure that on 9/11/ 2001 World Trade Center Building 7, near the Twin Towers, and maybe the Twin Towers themselves actually came down using thermite, not the airplanes crashing into them.  One video is below regarding that.  Thermite was found in the rubble.

Thermite is an aluminum powder with a metal oxide which produces an aluminothermic reaction known as a thermite reaction. It is not explosive, but it can create short bursts of extremely high temperature. A thermite reaction is initiated with some type of detonator and it can burn at temperatures of thousands of degrees. 

Have you ever seen a controlled demolition? What do you think about 9/11/2001? Why don't the government reports address the details of WTC Building 7?  Why all the fuss by thousands of engineers and scientists?  Can we trust our government? Have governments in history been trustworthy? How do we learn the truth about these things, since we weren't there and the evidence is not available to us? Did 9/11 cause people to draw closer to God? Did 9/11 bring about more Biblical government in the US? What physics or chemistry experiments would you like to perform toward determining the truth about this event?

The Open Chemical Physics Journal Active Thermitic Material Discovered in Dust from the 9/11 World Trade Center Catastrophe
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 Pp 7-31

We have discovered distinctive red/gray chips in all the samples we have studied of the dust produced by the destruction of the World Trade Center. Examination of four of these samples, collected from separate sites, is reported in this paper. These red/gray chips show marked similarities in all four samples. One sample was collected by a Manhattan resident about ten minutes after the collapse of the second WTC Tower, two the next day, and a fourth about a week later. The properties of these chips were analyzed using optical microscopy, scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (XEDS), and differential scanning calorimetry (DSC). The red material contains grains approximately 100 nm across which are largely iron oxide, while aluminum is contained in tiny plate-like structures. Separation of components using methyl ethyl ketone demonstrated that elemental aluminum is present. The iron oxide and aluminum are intimately mixed in the red material. When ignited in a DSC device the chips exhibit large but narrow exotherms occurring at approximately 430 °C, far below the normal ignition temperature for conventional thermite. Numerous iron-rich spheres are clearly observed in the residue following the ignition of these peculiar red/gray chips. The red portion of these chips is found to be an unreacted thermitic material and highly energetic.