killed in other institutions they supervised and often watched the slow deaths" By November 1, 1941, the first extermination camps were being built first Belzec, then Sobibor, Treblinka, Chełmno and Majdanek, and finally Auschwitz-Birkenau. At first, vague plans were made in Nazi Germany to deport all European Jews to Madagascar. Adolf Eichmann, in particular, supported this option before the Wannsee Conference of 1942, where he was made privy to the exact details of the "Final Solution. SS chief Heinrich Himmler stated: However cruel and tragic each individual case maybe, this method is still the mildest and best, if one rejects the Bolshevik method of physical extermination of a people out of inner conviction as un-German and impossible" The original plan was to use the Royal Navy after Britain's defeat to exile all of Europe's Jews to Madagascar. However, since the British were not defeated as anticipated by the Nazis, the Madagascar Plan had to be abandoned. The extermination process in Belzec, Sobibor and Treblinka was similar to the method used in the six extermination camps in Germany and Austria, but hugely scaled up for killing whole transports of people at a time.