Förintelseförnekarnas påståenden granskas, del 5. Leuchters Rapport

Short debunking: Leuchter has been debunked numerous times over the years. It will suffice to read the following:

Nizkor on Leuchter
Harry Mazal, "A Documented Analysis of the Speech given by Fred A. Leuchter on November 10, 1991".
Richard Green (PhD in chemistry), "Leuchter, Rudolf and the Iron Blues".
Robert Jan van Pelt on the Leuchter report.

Further comments: Leuchter is so outdated even by the denier standards that it's always weird to see him brought up on twitter as if he still had any relevance. I mean, I could at least understand the deniers relying on Germar Rudolf, an updated version of Leuchter (though as thoroughly refuted as Leuchter). But it seems that most of them are stuck in the 1980s.

Contrary to some denier suggestions, Leuchter has not constructed a single gas chamber in his life. He claimed to have been tasked with designing a replacement gas chamber in Missouri, but even if the project was real, it never came to fruition. In fact, he both lacked the necessary expertise and was accused of underhanded business tactics.

His report is full of fraudulent assertions. One small example will suffice, his claim about the Kremas 2 and 3:
The investigated areas were the alleged gas chambers designated as morgue #1 on both drawings ... there was no ventilation...
Whereas the intake and exhaust ventilation systems are amply documented for the morgues #1 in Krema 2 and 3.

On the basis of this assertion Leuchter claimed that each of those gas chambers had to be naturally ventilated at least for a week after each gassing! This alone disqualifies his non-existent "expertise".

Even worse, in a leaflet summarizing the results of his "investigations" Leuchter wrote:
Categorically, none of the facilities examined at Auschwitz, Birkenau or Lublin (Majdanek) could have supported, or in fact did support, multiple executions utilizing hydrogen cyanide, carbon monoxide or any other allegedly or factually lethal gas. Based upon very generous maximum usage rates for all the alleged gas chambers, totalling 1,693 persons per week, and assuming these facilities could support gas executions, it would have required sixty-eight (68) years to execute the alleged number of six millions of persons. This must mean the Third Reich was in existence for some seventy-five (75) years.
[...]
Of equal importance are Exterminationist errors relating to the crematories. If these crematories, operated at a theoretical rate of maximum output per day, without any down time and at a constant pace (an impossible situation), and we accept the figure of at least six million executed, the Third Reich lasted for at least forty-two (42) years, since it would take thirty-five (35) years at an impossible minimum to cremate these six million souls.
Since it is not claimed that a) six million Jewish victims were gassed (and gassed specifically at Auschwitz and Majdanek), b) that six million Jewish victims were incinerated in crematoria, Leuchter erected a monstrous, ridiculous strawman in order to knock it down.

Clearly, then, he's a fraud.