What kind of gas was used to kill the victims? Was it diesel exhaust, gasoline engine exhaust, or producer gas? Why wouldn't the Nazis have used producer gas?
What follows are two sections from my essay "Diesel Gas chambers--Ideal for Torture, Absurd for Murder" Part B http://www.nazigassings.com/dieselgaschamberb.html :
Friedrich Paul Berg
9. Half a Million Poison Gas Generators on Wheels — Never Used for Mass Murder!
During World War Two, most European countries relied for most of their non-military automotive transport upon vehicles which used neither gasoline nor Diesel, but burned solid fuels such as wood, coke, or coal instead. The solid fuel, which was generally wood, was first converted into a mixture of combustible gases by burning in a generator, usually mounted at the rear of the vehicle. The gases were then withdrawn from the generator by engine suction through a pipe beneath the vehicle, and then burned in a modified gasoline or Diesel engine located at the front of the vehicle. The combustible gas produced in this way always contained between 18%/vol. and 35%/vol. carbon monoxide. The exhaust of engines operated with this producer gas never contained more than 0.3%/vol. CO, since nearly all of the CO was consumed in the engine.In German-speaking parts of Europe, these vehicles were called Generatorgaswagen, or simply Gaswagen. If they burned wood, which most of them did, they were also called Holzgaswagen which translates literally as "woodgaswagons." In English-speaking countries, these vehicles were generally called "producer gas vehicles." However, they could just as appropriately have been called "poison gas vehicles" because that is precisely what they were. The operation of these vehicles required special safety procedures as well as special government-approved training and licensing of the many hundreds of thousands of drivers who drove these vehicles daily throughout German-occupied Europe.
Illustration 1: A typical gaswagon which had originally been a conventional bus but which was subsequently retro-fitted with a gas-generator and a modified Saurer engine.
Every driver of a producer gas vehicle was required to know and comply with the following guidelines and to keep them at hand in the vehicle:
---------------------------------------------------------------------------------------Safety Guidelines for Producer Gas Vehicles
dated November 28, 1942.
The gas from the gas generator contains up to 35% carbon monoxide (CO). Carbon monoxide can be fatal at concentrations as low as 0.1% when inhaled. For this reason – especially while starting the fire or during refilling – there is a danger of poisoning!
Start and refill the gas generator only out-of-doors! Do not linger unnecessarily near the blower discharge. Do not let engines run in garages.
Responsibilities of the supervisor and driver:
All persons who work with producer gas generators are required to learn and conform to the necessary procedures for a safe and orderly operation. The manufacturer's operating instructions must be strictly followed and kept available within the vehicle. Furthermore, these safety guidelines must also be kept with the vehicle documents for each producer gas vehicle … (emphasis as in original)---------------------------------------------------------------------------------------
Illustration 2: Saurer BT 4500 with producer gas generator. A Saurer truck similar to this type allegedly was used for mass murder in Kulmhof/Chelmno – not with producer gas, but incredibly with its exhaust gas.
Illustration 3: Austro-Fiat 4 D 90 A, producer gas generator as standard fitting.Already the first two sentences of these "safety guidelines" tell every driver the two most important facts they should know if they wish to commit mass murder. Producer gas is poison gas! All producer gas vehicles were, in effect, self-propelled gas generators. The fuel itself was poison gas.
Illustration 4: Another German war-time producer gas truck from Saurer (Type 5 BHw)
Wherever possible, liquid fuels had to be reserved for the military, at least for the duration of the war. The interest which even Adolf Hitler showed is demonstrated by his remarks at an exhibition of Mercedes-Benz heavy trucks with Mercedes-Benz gas producers that burned coal:
"Vehicles of this kind will retain their special significance after the war as well; for given the trend towards increasing motorization, we will never have a surplus of liquid fuel and will always be dependent on imports. The additional domestic fuels thus benefit our own national economy."
By the autumn of 1941, some 150,000 producer gas vehicles were already in use in Germany and the areas controlled by her. The conversion of existing trucks to producer gas resulted in a monthly savings of about 45 million liters of liquid fuel. The goal was "to free every bit of dispensable fuel for the Wehrmacht." By the end of the war, more than 500,000 producer gas vehicles had been put into service by the Germans.
On May 30, 1942, Reichsmarschall Göring established a "Generator Central Office" for his Four-Year Plan:
"to boost generator production, to determine new types on the basis of the fuel situation at hand, to develop new solid fuels for use in the generator, and to develop suitable processes for preparation and low-temperature carbonization etc."
"I refer to the explanations in my aforementioned decree, regarding the urgency of making Germany as well as the occupied territories and dependent lands largely independent of liquid fuel as quickly as possible, and would ask you to vigorously support the efforts of the Central Office through the increased use of generators."
As the war continued, conversion to solid fuel became more and more urgent. On September 22, 1942, Reich Minister Speer, acting in his capacity as plenipotentiary for armament production (GBRüst), ordered the conversion of all medium and heavy vehicles including buses in all German-occupied regions. A year later, the GBRüst's amendment of September 13, 1943, eliminated all exemptions. Now the conversion of all civilian vehicles was mandatory as well, including even the smallest automobiles. After the war, in a long report about German oil production, the U.S. Strategic Bombing Survey stated that even some of the best German tanks, 50 Königstiger, had been driven with producer gas just before the war's end.The vast numbers of producer gas vehicles as well as the fervor with which the Germans developed new vehicles and uses for this gas technology, which is so evident throughout their wartime automotive literature, undermine the Holocaust story in general. If the Germans had ever intended to commit mass murder with carbon monoxide, they certainly would have had enough brains to employ this superb poison gas technology long before using anything as idiotic as Diesel exhaust. And, it would have worked!
Illustration 5: The Imbert-Generator was the most widespread producer gas generator of the Third Reich, here in mass production on an assembly line in Cologne 1943.
Eichmann and the other 'transportation experts' involved in the "final solution of the Jewish question," which was indeed primarily a transportation problem, would certainly have been fully aware of these vehicles. If they had had any expertise at all, they would have also been aware of some of the unique features of these vehicles as well. For example, each generator had a startup blower which was powered by either a small electric motor or by hand. It would have been childishly easy to attach a hose, or pipe, to the exhaust of that blower so as to force poison gas into any cellar, barracks, or prison, but nowhere in the vast Holocaust literature is any such technology even suggested.
Another irony is the fact that the same producer gas technology was actually used to gas rats and other vermin. According to the public health literature from the Third Reich, producer gas equipment from the firm of Nocht-Giemsa for killing rats was "very common." And yet, no one thought of using this obvious, practical, effective, simple, and cheap technology on humans – even Jews who had sometimes been compared to rats as in the film "Der Ewige Jude" (The Eternal Jew). Obviously, the National Socialists were not nearly as fiendishly clever, as exterminationists often claimed they were, in connecting Jews to rats.
10. Vans with Diesels for Mass Murder?
10.1 Origins of the Diesel Story
The producer gas vehicles are not the same as the "gas vans" allegedly used for mass murder in Chelmno and by the Einsatzgruppen in Russia, despite the ironic circumstance that the words used in German for both kinds of vehicles are similar. According to all the 'evidence,' the murderous "gas vans" were ordinary heavy vehicles whose exhaust (most often from a Diesel operating at idle) became the lethal gas. The gas van story is based primarily on a strange Nuremberg trial document known as PS-501, which is a probable fabrication based upon an unavailable, innocuous letter from SS-Untersturmführer Becker to SS-Obersturmbannführer Walther Rauff, in which Becker requested all-wheel-drive vehicles so that he could more easily travel the muddy Russian roads. The letter suggests modifications to an S-vehicle. The text of an unavailable original seems to have been rewritten with several changes to give it an incriminating significance. There are several different versions of this 'document' which has been critically assessed in the chapter (pages 215-241) in Dissecting the Holocaust written by Ingrid Weckert.
The Diesel murder claims probably originated in mid-1943 Soviet propaganda. A short time earlier, in April 1943, the German discovery of the massacre of thousands of Polish officers at Katyn had exposed the Soviets as ruthless mass murderers. The Germans had openly invited internationally-renowned forensic scientists, even from enemy countries, to thoroughly examine the victims.
Illustration 6: German war-time producergas generator made by Kromag
To avenge themselves on the Germans for the debacle of Katyn, the Soviets staged show trials a few months later in Char'kov and Krasnodar. In the course of those trials, some unfortunate German prisoners provided 'confessions.' However, the Soviets denied any and all non-Soviet experts access to the alleged sites of the massacres. The Soviets accused the Germans of having driven civilians into the countryside in Diesel trucks. After the trucks containing the victims were parked, the Diesel engine exhaust was allegedly redirected into the interior, and the victims expired shortly thereafter.In this scenario, the Diesel engines would have been operating without any load and at fast idle at the very worst. The CO concentrations under such conditions would hardly have caused a headache in half an hour.
Illustration 7: Design of an Ostmark producer gas generator--also shown is the typical "blower" in the lower left. 
Some of these trucks were said to have been manufactured by the firm of Saurer. The ironic part of this tale is that even before the war, Saurer was arguably the manufacturer of the world's best and most efficient producer gas trucks. During the war, this Swiss-Austrian firm continued its technical leadership over Mercedes, Opel, and Ford who were actually manufacturing far more producer gas vehicles. More than 6,000 Saurer trucks were built in Vienna during the war and most, if not all, had producer gas generators and Diesel engines. How absurd to believe anyone with even a minimum of technical understanding would even try to use the exhaust from these trucks for murder, when the fuel itself was a thousand times more lethal!
A television series produced during the collapse of the Soviet Union and aired in the United States in 1993, provided further insight into the Soviet origins of the gas van tale. The four-part broadcast was entitled: "Monster: A Portrait of Stalin in Blood." At one point in the second part, subtitled "Stalin's Secret Police," KGB officer Alexander Michailov claimed that the gas trucks were invented in Moscow by Isai Davidovich Berg – no relation to this author – and were already in use a few years before the war. According to Michailov, these may have served as a model for Hitler's SS and the Gestapo. Diesel engines were not mentioned. This is explained by the fact that all pre-war trucks in the Soviet Union had only gasoline engines. There were no Diesel engines since the entire transportation system in the USSR was based on earlier, western engine types such as that of Ford Motor Co. More than likely, the Soviet allegations of gas trucks are truly based on the Soviets' own mass murder technology to which they simply added Diesel engines to make them seem more sinister and, most of all, more German.
The gas van story is an adaptation of some documentary materials relating to the perfectly innocent use of producer gas vehicles – supported, of course, by appropriate 'eyewitness' testimony. It is within the gas van story, however, that one can see in miniature the process by which the Holocaust story in general has been confabulated.
The earliest reference to mass murder in gas vans that I have ever found is from July 1943, when Pravda reported on the show trials of a number of German prisoners who had supposedly murdered Soviet citizens in Krasnodar with Diesel powered vans. English translations of the Pravda stories appeared in The Trial in Britain through Hutchinson & Co. and Foreign Languages Publishing House where we have the following text:
"In the autumn of 1942, the Germans began to use specially equipped automobiles which the population called 'murder vans,' for the purpose of doing away with Soviet citizens.
These 'murder vans' were covered five-ton or seven-ton gray-painted motor trucks, driven by Diesel engines."
From a later trial in Kharkov in December of 1943 we have the following claim:
"The vans are lined inside with galvanized iron and have airtight folding doors at the back. The floor is equipped with a wooden grating under which passes a pipe with apertures. The pipe is connected to the exhaust pipe of the engine. The exhaust gases of the Diesel engine, containing highly concentrated carbon monoxide, enter the body of the van, causing rapid poisoning and asphyxiation of the people locked up in the van."
The simple fact is that Diesel exhaust never contains "highly concentrated carbon monoxide."
In a later publication entitled "Soviet War Documents" from December 1943 and published by the Soviet Embassy in Washington, DC, we have a description of the gas van on page 172. According to that description, the engine was a "Sauer" engine. There is no "Sauer" engine manufacturer but there is the famous company called "Saurer" which was discussed earlier. The connection that is made here to a company called "Sauer" is significant because it reappears in the infamous fake letter from Becker to Rauff in Nuremberg File PS-501. By their common errors one can recognize the work of the forgers. There is never any mention anywhere of the engines having been gasoline engines – although that would have certainly made sense technically – nor is there any mention of producer gas wagons which would have made all the sense in the world.
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Nazi Gassings Never Happened! Niemand wurde vergast!
There were NO “limited gassings!” There were NO homicidal Nazi Gassings at all!
The REAL Mass Murderers were the Anglo-Americans and the Jews themselves!