Zyklon B
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Zyklon B was the trade name of a cyanide-based pesticide invented in Germany in the early 1920s. It consists of hydrogen cyanide, as well as a cautionary eye irritant and one of several adsorbents such as diatomaceous earth. The product is notorious for its use by Nazi Germany during the Holocaust to murder approximately 1.1 million people in gas chambers installed at Auschwitz-Birkenau, Majdanek, and other extermination camps.
Zyklon labels from Dachau concentration camp used as evidence at the Nuremberg trials; the first and third panels contain manufacturer information and the brand name, the center panel reads "Poison Gas! Cyanide preparation to be opened and used only by trained personnel"
A fumigation team in New Orleans, 1939. Zyklon canisters are visible.
Empty Zyklon B canisters found by the Allies at Auschwitz-Birkenau in 1945
Rudolf Höss at his trial in Poland, 1947
Extermination camp
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Nazi Germany used six extermination camps, also called death camps, or killing centers, in Central Europe during World War II to systematically murder over 2.7 million people – mostly Jews – in the Holocaust. The victims of death camps were primarily murdered by gassing, either in permanent installations constructed for this specific purpose, or by means of gas vans. The six extermination camps were Chełmno, Belzec, Sobibor, Treblinka, Majdanek and Auschwitz-Birkenau. Extermination through labour was also used at the Auschwitz and Majdanek death camps. Millions were also murdered in concentration camps, in the Aktion T4, or directly on site.
Two of the four crematoria at Auschwitz II (Birkenau).
Members of the Sonderkommando burned the bodies of victims in the fire pits at Auschwitz II-Birkenau, when the crematoria were overloaded. (August 1944)
Jewish children during deportation to the Chełmno extermination camp