HansHill wrote: ↑Thu Apr 10, 2025 11:48 am
Nessie wrote: ↑Thu Apr 10, 2025 11:22 am
My version would be;
Rudolf: The known and predictable behaviour of iron when exposed to HcN over prolonged periods is that it will produce long-term stable residues such as Prussian Blue. The known environment of the gas chambers meets the conditions for these residues to have formed.
Dr Green: The environment does not meet the conditions for these residues to have formed,
as explained by the pH levels were not sufficient to support the formation of Prussian Blue, due to the time of exposure of gassings compared to delousing, washing and painting the walls between gassings and conditions after gassings stopped.
Only Krema I's Leichenkeller and part of Krema II can be accessed for testing. Markiewicz proves the use of Zyklon B within the Leichenkellers and also the Krema buildings in general, as there were positive tests for the ruins. Robel proved the vent, recovered from the ruins of Krema II, had also come into contact with Zyklon B.
The bolded sentence doesn't make sense, unless you are suggesting Dr Green's position declares that the exposure times affected the pH of the material in any way, which is incredibly stupid. Since you are materially changing my steelman of Dr Green's hypothesis please write something coherent and if this is not possible in your own words, cite from his own words.
Green stated;
https://phdn.org/archives/holocaust-his ... affweb.pdf
"I show that a) the principle behind the argument made by the defense valid b) Rudolf's
comparison between Prussian blue staining in the delousing chambers with residues in the gas chamber
is invalid, c) there is evidence that much of the Prussian blue staining is in fact superficial, d) that even if
Rudolf were completely correct about his criticism, his argument fails to show that the gas chambers were
not exposed to HCN."
"Robert Jan van Pelt estimates that 350,000 people were killed in morgue 1. At 2000 people
per gassing, that leads to 175 gassings, or approximately 117 hours of exposure (not all of which are at
the maximum exposure because of the decrease owing to ventilation). In contrast, delousing chamber
BW5a had a minimum of 450 gassings of approximately 16 hours each for a total of 7200 hours most of
which was at the full concentration."
"The first factor is important because whatever the cyanide ion concentration was immediately
after a gassing, it would have been greatly reduced by the washing of the chambers with water."
"For the reasons discussed above it is extremely unlikely that aqueous phase concentrations of
cyanide in the gas chambers would have been great enough to produce iron blue through Rudolf's
mechanism. The walls were washed with water, which would have greatly reduced the cyanide ion
concentration. Additionally, the fact that gassings were short and infrequent compared to delousings
means that the equilibrium value of the concentration of cyanide ions in solution was never established.
In the delousings by contrast the concentrations no doubt were much closer to the equilibrium values. If
Rudolf is correct about the mechanism of iron blue formation, it is no surprise that there is a difference in
blue staining between the gas chambers and the delousing chambers despite the fact that both have
been shown to have been exposed to HCN."
Now, I am not a chemist. Are you? All I can do is quote Green, to summarise his reasoning as to why there are differences between delousing and gassing and why gassing produces less residue.