On 19 December 1939, Eichmann was assigned to head RSHA Referat IV B4 (RSHA Sub-Department IV-B4), tasked with overseeing Jewish affairs and evacuation. Heydrich announced Eichmann to be his "special expert", in charge of arranging for all deportations into occupied Poland. The job entailed co-ordinating with police agencies for the physical removal of the Jews, dealing with their confiscated property, and arranging financing and transport. Within a few days of his appointment, Eichmann formulated a plan to deport 600,000 Jews into the General Government. The plan was stymied by Hans Frank, governor-general of the occupied territories, who was disinclined to accept the deportees as to do so would have a negative impact on economic development and his ultimate goal of Germanisation of the region. In his role as minister responsible for the Four Year Plan, on 24 March 1940 Hermann Göring forbade any further transports into the General Government unless cleared first by himself or Frank. Transports continued, but at a much slower pace than originally envisioned. From the start of the war until April 1941, around 63,000 Jews were transported into the General Government. On many of the trains in this period, up to a third of the deportees died in transit. While Eichmann claimed at his trial to be upset by the appalling conditions on the trains and in the transit camps, his correspondence and documents of the period show that his primary concern was to achieve the deportations economically and with minimal disruption to Germany's ongoing military operations.