"
Jtl: it’s indeed you who stubbornly tries to hand-wave critically important results
1) Author of Bentham paper provided excellent XEDS spectra and micrographs of chips (a) to (d) which indicate nanosized iron oxide particles and typical platelets of kaolinite.
2) Millette proved kaolinite in the same kind of chips (with the same kind of iron oxide) by several methods: TEM-SAED-EDS, SEM-EDS, FT-IR.
No other sources of Al and Si signals were found by Jim Millette.
I repeat, Millette proved only..."
It is not as simple as saying chips
(a) to
(d).
A lot of red/gray chips in the WTC dust approximately resembled the 'chips of interest'.
Basically, Millette collected any dust chip containing iron, or any other magnetically attracted material, including paints etc.
Once collected, to be accepted by Millette, a qualifying chip had to appear red/gray.
That left a lot of chips to pick through.
Prof Niels Harrit - Interview London (2009) Part 2 - YouTube said:
[~00:01:00 speaking about red/gray chips of interest.]
"they are small, less than, well..there are a few which are bigger than a mm. But the vast majority, maybe 1/10th of a mm. So it takes a microscope to find them-- and some skill."
If Millette ever read the Bentham Paper, he would have made note of the simple Resistivity test it described for easily locating 'chips of interest' amongst an otherwise large pile of non-candidate chips.
But he makes no mention of having used the suggested Resistivity test.
Millette had the time, the equipment, and the opportunity, to extract 'resistivity-measured' chips and let his oven go another +30C to 430C.
So easy to check but oddly, he is not curious.
Here he has a golden opportunity to blow a peer-reviewed paper out of the water.
All he has to do is select a few of his red/gray chips that have a low resistivity of ~10 ohms, heat to 430C and examine the residue.
And if he was curious -- and peeked.
He is remaining awfully silent about what he saw.
MM