Si vedano, ad esempio, Jean-Claude Pressac e R.-J. Van Pelt, "The Machinery of Mass Murder at Auschwitz", in Y. Gutman, e M. Berenbaum, The Anatomy of the Auschwitz Death Camp, Bloomington: Indiana University Press and Washington DC: The United States Holocaust Memorial Museum, 1994, pp. 183-245. Citato anche in Richard J. Green, The Chemistry of Auschwitz, http://phdn.org/archives/holocaust-history.org/auschwitz/chemistry/ "That same night, 1,492 women, children, and old people, selected from a convoy of 2,000 Jews from the Krakow ghetto, were killed in the new crematorium. Six kilos of Zyklon B were poured into the stacks that opened into the four grillework columns implanted between the pillars that supported the ceiling. Within five minutes, all the victims had succumbed. The aeration (8,000 cu m an hour) and deaeration system (same strength) were then started up and, after 15 to 20 minutes, the atmosphere, which had been practically renewed every three to four minutes, was sufficiently pure so that members of the Sonderkommando could enter the stiflingly hot gas chamber. During this first gassing, the Sonderkommandos wore gas masks as a precaution. The bodies were untangled and dragged to the goods elevator. Hair was clipped, gold teeth pulled out, wedding rings and jewels removed."
