Indeed, we have that "proof" of allegedly thermitic reaction in the form of shiny iron-rich microspheres, which were products of heating red/gray "nanothermite" chips from WTC dust up to 700 degrees C under air, in the Fig. 20, Bentham paper:
[qimg]http://www.internationalskeptics.com/forums/picture.php?albumid=1128&pictureid=8140[/qimg]
Ca two weeks ago, I heated four common red paints on rust flakes up to 700 degrees as well (heating rate was 10 degrees/minute in both cases), and here are again some micrographs (look at posts
1 and
2):
[qimg]http://www.internationalskeptics.com/forums/picture.php?albumid=1134&pictureid=8147[/qimg]
[qimg]http://www.internationalskeptics.com/forums/picture.php?albumid=1130&pictureid=8143[/qimg]
[qimg]http://www.internationalskeptics.com/forums/album.php?albumid=1134&pictureid=8147[/qimg]
[qimg]http://www.internationalskeptics.com/forums/picture.php?albumid=1126&pictureid=8133[/qimg]
Although these micrographs could be better/more convincing, some shiny objects similar to those on Fig. 20 are created in some of my "red/gray paint chips".
Therefore, Fig. 20 is no better "proof" of CD of WTC than e.g. this banknote from 1948 (at least to me):
[qimg]http://www.internationalskeptics.com/forums/picture.php?albumid=1147&pictureid=8160[/qimg]
And all "suspicious" red/gray chips from WTC dust are of course some paint chips on rust, as has been correctly claimed here for years by debunkers