Engineers have been trying to figure out exactly what happened and whether they should be worried about other buildings like it around the country
Most of the other buildings in the [area] stood despite suffering damage of all kinds, including fire... ?'Fire and the structural damage
would not explain steel members in the debris pile that appear to have been partly evaporated', Dr. [Jonathan] Barnett said. (Glanz, 2001; emphasis added.)
The observed "partly evaporated" steel members is particularly upsetting to the official theory, since fires involving paper, office materials, even diesel fuel, cannot generate temperatures anywhere near the 5,000+ oF needed to "evaporate" steel. However, thermite, RDX and other commonly-used explosives can readily slice through steel (thus cutting the support columns simultaneously in an explosive demolition) and reach the required temperatures. (It is possible that some other chemical reactions were involved which might proceed at lesser temperatures.) This mystery needs to be explored - but is not mentioned in the "official" 9-11 Commission or NIST reports.
3. There are several published observations of molten metal in the basements of all three buildings, WTC 1, 2 ("Twin Towers") and 7. For example, Dr. Keith Eaton toured Ground Zero and stated in The Structural Engineer,
?'They showed us many fascinating slides' [Eaton] continued, ?'ranging from molten metal which was still red hot weeks after the event, to 4-inch thick steel plates sheared and bent in the disaster'. (Structural Engineer, September 3, 2002, p. 6; emphasis added.)
The observation of molten metal at Ground Zero was emphasized publicly by Leslie Robertson, the structural engineer responsible for the design of the World Trade Center Towers, who reported that "As of 21 days after the attack, the fires were still burning and molten steel was still running." (Williams, 2001, p. 3; emphasis added.)
Sarah Atlas was part of New Jersey's Task Force One Urban Search and Rescue and was one of the first on the scene at Ground Zero with her canine partner Anna. She reported in Penn Arts and Sciences, summer 2002,
?'Nobody's going to be alive.' Fires burned and molten steel flowed in the pile of ruins still settling beneath her feet. (Penn, 2002; emphasis added.)
Dr. Allison Geyh was one of a team of public health investigators from Johns Hopkins who visited the WTC site after 9-11. She reported in the Late Fall 2001 issue of Magazine of Johns Hopkins Public Health, "In some pockets now being uncovered they are finding molten steel." Further information on the subject is available at
http://globalresearch.ca.myforums.net/viewtopic.php?p=11663.
Thus, molten metal was repeatedly observed and formally reported in the rubble piles of the WTC Towers and WTC 7, metal that looked like molten steel. However, scientific analysis, using for example X-ray fluorescence, would be needed to ascertain the actual composition of the molten metal.
I maintain that these published observations are consistent with the use of the high-temperature thermite reaction, used to cut or demolish steel. Thermite is a mixture of iron oxide and aluminum powder. The end products of the thermite reaction are aluminum oxide and molten iron. So the thermite reaction generates molten iron directly, and is hot enough to melt and even evaporate steel which it contacts while reacting. On the other hand, falling buildings (absent explosives) have insufficient directed energy to result in melting of large quantities of metal. The government reports admit that the building fires were insufficient to melt steel beams -- then where did the molten metal come from? Metals expert Dr. Frank Gayle (working with NIST) stated:
Your gut reaction would be the jet fuel is what made the fire so very intense, a lot of people figured that's what melted the steel. Indeed it did not, the steel did not melt. (Field, 2005; emphasis added.)
None of the official reports tackles this mystery. Yet this is evidently a significant clue to what caused the Towers and WTC 7 to collapse. So I would very much like to see an analysis of the elemental composition of the metal, and could do this myself if a small sample were made available according to scientific courtesy. Any reader who knows of chemical analyses or even photographs of this molten metal found below the rubble piles of WTC 1, 2 and 7 is invited to speak out and contact the author. This could lead to an experiment crucis.
http://www.physics.byu.edu/research/energy/htm7.html