R Mackey, regarding an earlier post...
R Mackey, regarding an earlier post …
In fact, the un-extinguishable fires have NOT been adequately explained. Not in any study by NIST, FEMA, USGS, RJ Lee, Worcester Polytech, any other study, that I am aware of, that has been officially commissioned or carried out. NIST denies that there even were fires.
Comparing the WTC fires to the Centralia underground fire is completely irrelevant as the two have nothing in common, or any connections whatsoever. That Centralia took place doesn’t explain, adequately or not, what generated the WTC fires, or sustained them. The Centralia fire has a natural fuel source, the WTC fires had an undetermined fuel source. That the official studies have not addressed the fires at the WTC piles is, in fact, very relevant to the statement by Ryan that they “have not been adequately explained…” If they have been adequately explained, cite your documentation. A casual reference to a known underground fire proves absolutely nothing.
This paper assumes there is much plastic, polyvinyl chloride, computer housings, office materials in the rubble. It is the release of particulate matter, and the documentation that shows typical release patterns of PM in large structural fires, as well as the concentrations of specific compounds that EPA and Cahill reported, that are not adequately explained by what is known about large structural fires.
The paper states: “The spikes in VOC detection could also be explained as a result of rapid combustion of typical materials found within a building structure. If energetic nanocomposite materials, buried with the pile at GZ, were somehow ignited on specific dates, violent, shortlived, and possibly explosive fires would result. Such fires would have quickly consumed all combustible materials nearby. The combustible materials available, after a month or two of smoldering fires in the pile, might have been more likely to be those that were less likely to have burned completely on earlier dates, like plastics. Later combustion of such plastic materials, in violent but short-lived fires, could explain the spikes in VOC’s seen on those dates.”
Cahill attempts to discuss the aberrant findings, but with hypotheses that don’t seem very likely. Many of the aberrant findings, “very fine aerosols typical of combustion temperatures far higher than [expected in] the WTC collapses piles… some elements abundantly and others hardly at all, despite similar abundances in the collapse dust…organic species in the very fine mode that would not survive high temperatures…” which organic species included sulphur and sulphur-based compounds and fine particles of chemically bound silicon, in their abundance are not easily explained by what is typical of large structural fires. Cahill attempted to ditch the “high temperature” explanation in favor of volatized metals due to high concentrations of chlorine, not a likely scenario. High temperatures do easily explain volatized metals, and is corroborated by the USGS, RJ Lee, and Worcester Polytech findings of extreme temperatures. They likewise found evidence of extreme temperatures and volatized metals. Sulphur and sulphur-based compounds, silicon, and other volatized metals are consistent with nanocomposite energetic materials, but not easily explained in their concentrations and release patterns by typical structural fires. Cahill said in relation to some of the PM, “these particles simply should not be there…”
You said, “The "explosions followed by white dust clouds" are, of course, gypsum, concrete, and similar materials ejected by the collapse, and not by a "thermite reaction." “
NIST comments on the white clouds as “An unusual flame is visible within this fire. In the upper photograph {Fig 9-44} a very bright flame, as opposed to the typical yellow or orange surrounding flames, which is generating a plume of white smoke, stands out." Source: NCSTAR 1-5A Chapter 9 Appendix C NIST Fig. 9-44. p. 344
Source: nist factsheets/faqs_8_2006 (August 2006)
So, not “of course, gypsum or concrete…” white smoke… consistent with a thermite/thermate incendiary device. Your dismissal of what NIST calls “white smoke” generated by an “unusual” and “bright flame,” as gypsum or concrete is unsubstantiated. Thermate burns with a very bright flame and gives off a plume of white smoke consisting of aluminum oxide, which is consistent with the flame and white plume NIST comments on.
Ryan doesn’t make a case for “persistent thermite reactions.” The very quick, energetic exothermic reaction is over very rapidly. In the event an excess was used to sever connections in the perimeter and core columns, which is entirely consistent with the lack of resistance to the collapse once it initiated, it is highly plausible pockets of un-ignited thermite/thermate existed in the pile. At any rate, there is sufficient cause to investigate incendiaries.
None of you here have made any case whatsoever against conducting an investigation into that possibility. The most you have done in this thread is thumping of chests, patting each other on the back, and name calling, with poor or no substantiation to your arguments.
BTW, concerning benzene levels:
The general equation is: micrograms/m3 = (ppbv)(12.19)(MW) / (273.15 + oC) where: micrograms/m3 = micrograms per cubic meter (i.e., micrograms of gaseous pollutant per cubic meter of ambient air) MW = molecular weight of the gaseous pollutant ppbv = parts per billion by volume (i.e., volume of gaseous pollutant per billion volumes of ambient air) oC = degrees Centigrade (Source: as a new commentor, not allowed to cite the source...)
MW of benzene is 78.1 g/mol
82 micrograms/m3 = ~26 ppb at 20 degrees C
180,000ppb is a massive amount of benzene to be suddenly released, as are daily averages of 18,000 ppb. It warrants investigation. Especially in light of the EPA’s failure to warn workers and others of the environmental dangers to working in the area at the time, and in light of the sicknesses and deaths that are occurring in first responders.
And Mangoose, rather than taking a single line and parsing it to your heart's content, perhaps you might try to address the salient points of the paper.