I will address one point by Ray Barren sparing him the effort to read this thread for that answer, he said:
I'm amazed at the attempts to 'disprove' the Holocaust, and this ranks among them. Without any real grounds for doing so (no medical research) it is just assumed that cyanide within the victims lungs would have posed a problem. Why? The lethal amount would have been incorporated into the person's body through their respiration, meaning that cyanide would have been 'lost' from further exposure. The amount of cyanide within a victim's lungs, but not bonded to the body would hardly be substantial, given how small human lungs are. And without any respiratory system if the gas leaves (that is an if) it would not be quick, meaning that a high concentration will not be immediate.
So really there might be a litre or two of cyanide exposed air in the victim's lungs, coming out slowly from the body, and also subject to 30 minutes of mechanical ventilation. This is not a major danger, with or without the gas masks which are testified to by numerous sources (Jews and nonJews). And the number of persons inside the gas chambers would not usually rise above 1000, half of your figure. There were three other gas chamber buildings and two bunkers to use for gassings during the busy time of the Hungarian deportations, which would be the only time when a 2000 figure might have been achieved.
Apparently Ray is confused and not familiar with actual storyline, I'll help him. Some of what he says is irrelevant to the cyanide issue he himself attempts to make.
Concerning Zyklon-B, remember, the storyline says that in Auschwitz/Birkenau, Jews were gassed at Kremas II & III (the largest of the alleged 'gas chambers') at the rate of 2000 per batch, every 20 minutes (said Auschwitz curator Franciszek Piper), for days on end. The shysters are forced to use the 20 minute length per 2000 in order to meet the numbers they claim were gassed. Another example of them painting themselves into a corner with their own lies. As the expression goes, 'once you lie, you must continue to lie.'
It takes many hours for Zyklon-B to release all of it's cyanide from the carrier material. So, if the doors to crematoriums/gas chambers were opened to let in the alleged next 2000, after a mere 20 minutes, the Zyklon-B would still be releasing it's cyanide load, therefore creating a danger for the labor camp as a whole.
The story also says that the Zyklon-B was deposited into containers which were lowered into mesh 'columns' which were supposedly erected below each of the fabled 'holes' on top of the crematoriums/'gas chambers'. After 20 minutes, these containers were supposedly lifted up & out of the mesh columns by SS men in gas masks on top of the 'gas chamber' roof. Again, the Zyklon-B is still emitting it's deadly load into the general environment, AND cyanide gas would still flow out of the opened doors.
Sure, cyanide would necessarily still be inside the lungs of those supposedly gassed, but that problem is much smaller than the general release of cyanide into the camp environment that would necessarily occur if the storyline was true.
And then there's the alleged next batch waiting by the doors; they would obviously be impacted. Therefore, the alleged 'tricked into thinking they were getting showers' canard falls apart, as does the alleged length of time per gassing.
As for the gas masks themselves, no doubt they were used in the delousing facilities. And gas masks, supposedly used by the SS in the 'extermination' procedure falls apart simply by knowing that once the doors were opened (after 20 minutes), those outside would be in mortal danger. Imagine saying to the Jews, 'OK folks, ignore the man on the roof in a gas mask, holding a container of active Zyklon-B, and also please ignore the cyanide which is killing those of you in line who just got a whiff, you're just going to get a shower'. It's laughable.