Originally posted by: event8horizon
Originally posted by: TastesLikeChicken
Originally posted by: event8horizon
even ole greening dosent think it is the primer.
-a post from greening
"It's quite difficult to get much information on the WTC primer paint but it is mentioned in Appendix D of NIST NCSTAR 1-3C, pages 433 - 438. Here you find a Table D-1 which gives the chemical composition of the primer. The main inorganic constituents are iron oxide, "zinc yellow", "Tnemec pigment of proprietary composition" and diatomaceous silica.
Now the Tnemec pigment caught my eye, but the fact that it's described as having a "proprietary composition" suggests that this material's chemical ingredients are "top secret". However, in the modern world of "right-to-know" legislation, you can determine the composition of just about any proprietary material by looking up its associated MSDS (Material Safety Data Sheet).
I have done this for Tnemec's Series 010 Red Primer and this is what I have found reported as the ingredients:
Iron-oxide fume
Zinc compounds with traces of cobalt
Quartz and amorphous silica (SiO2)
Talc (Mg3Si4O10(OH)2)
Calcium Silicates and Aluminates
Now here lies the rub: Jone's red chips do not contain zinc, although some WTC iron-rich particles do indeed contain significant amounts of zinc. Nevertheless, zinc is essentially absent from Jones' red chips, thus it looks like these mystery particles are definitely not paint chips."
http://the911forum.freeforums....-wtc-dust-t150-15.html
Jones's chips don't contain Zinc? From page 17 of Jones's paper:
Prior to soaking the chip in MEK an XEDS spectrum was
acquired from an area of the red-layer surface. The resulting
spectrum, shown in Fig. (14), produced the expected peaks
for Fe, Si, Al, O, and C. Other peaks included calcium, sulfur,
zinc, chromium and potassium. The occurrence of these
elements could be attributed to surface contamination due to
the fact that the analysis was performed on the as-collected
surface of the red layer. The large Ca and S peaks may be
due to contamination with gypsum from the pulverized wallboard
material in the buildings.
excellent question. i also was wondering the same thing and i found the answer. this is from the 911 forum. this is a post by greening that shows an email between him and the researchers.
Here are Jones and Legge's responses to my e-mail:
Thank you, Dr. Legge, for your response.
I would add that Figure 7 shows spectra from chips which had been
fractured so as to expose a fresh surface, because we were well aware
by this time of the problem of surface contamination by other WTC dust
(which is loaded with CaSO4 also Zn and Cr etc.).
Dr. Greening: Indeed, if you will examine Figs 16, 17, and 18 or
various regions on this same chip AFTER the MEK soaking, you will
observe no zinc... indicating that the MEK soaking with agitation has
removed surface dust/contamination. Excuse us for not cleaning the
chip before the first SEM/XEDS examination, but note that this is
essentially all pro bono work -- and we spent a great of "free" time
examining the chip after it had been soaked and were not in a position
to start fresh.
You claimed (Dr. Greening): "Now this is very significant because the
XEDS spectrum you present in Figure
14 of your report is essentially a perfect match for Tnemec red primer
paint, particularly because of the Zn and Cr content. "
- I very highly doubt it: I challenge you to demonstrate your claim
QUANTITATIVELY or even semi-quantitatively. The mere presence of Si,
Ca, S, etc. is not enough for "essentially a perfect match", as you
must know.