"In the spring of 1946, less than a year after the end of World War II and the liberation of the infamous German concentration camps, a child was born in Bergen Belsen, the place where only a short time earlier tens of thousands had perished. This child was the first of over two thousand who were born in and around Bergen Belsen, of parents who had survived the Holocaust.
At Auschwitz, after the chambers were filled, the doors were shut and pellets of Zyklon-B were dropped into the chambers through vents, releasing toxic prussic acid, or hydrogen cyanide. Those inside died within 20 minutes; the speed of death depended on how close the inmate was standing to a gas vent, according to the commandant Rudolf Höss, who estimated that about one-third of the victims died immediately. Johann Kremer, an SS doctor who oversaw the gassings, testified that: "Shouting and screaming of the victims could be heard through the opening and it was clear that they fought for their lives." The gas was then pumped out, the bodies were removed, gold fillings in their teeth were extracted, and women's hair was cut. The work was done by the Sonderkommando, work groups of mostly Jewish prisoners. At Auschwitz, the bodies were at first buried in deep pits and covered with lime, but between September and November 1942, on the orders of Himmler, they were dug up and burned. In early 1943, new gas chambers and crematoria were built to accommodate the numbers.