thumb|Detailed map of Buna Werke, Monowitz, and nearby subcamps After examining several sites for a new plant to manufacture Buna-N, a type of synthetic rubber essential to the war effort, the German chemical conglomerate IG Farben chose a site near the towns of Dwory and Monowice (Monowitz in German), about east of Auschwitz I. Tax exemptions were available to corporations prepared to develop industries in the frontier regions under the Eastern Fiscal Assistance Law, passed in December 1940. In addition to its proximity to the concentration camp, a source of cheap labour, the site had good railway connections and access to raw materials. In February 1941, Himmler ordered that the Jewish population of Oświęcim be expelled to make way for skilled laborers; that all Poles able to work remain in the town and work on building the factory; and that Auschwitz prisoners be used in the construction work.
thumb|detailed map of b.una werke monowitz and nearby subcamps after examining several sites for a new plant to manufacture buna-n a type of synthetic rubber essential to the war effort the german chemical conglomerate ig farben chose a site near the towns .of dwory and monowice (monowitz in german) about east of auschwitz i tax exemptions were available to corporations prepared to develop industries in the frontier regions under the eastern fiscal assistance law passed in december 1940 in additi.on to its proximity to the concentration camp a source of cheap labour the site had good railway connections and access to raw materials in february 1941 himmler ordered that the jewish population of oświęcim be expelled to make way for skilled laborers; that all poles able to work remain in the town and work on building the factory; and that auschwitz prisoners be used in the construction work