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Buna Werke or "Buna Plant or Work" was a Nazi German labor camp located near Oswiecim, Poland. The plant produced synthetic oil and Buna-N or rubber using slave labor from the Auschwitz concentration camp. The Buna factory had a labor force of an estimated 80,000 slave laborers by 1944.
According to Joseph Borkin in his book entitled "The Crimes and Punishment of IG Farben", IG Farben was the majority financier for Auschwitz III, a camp that contained a production site for production of Buna rubber. Borkin writes that Primo Levi was one of the upper level chemists at this Buna plant, and was able, with the assistance of his colleagues, to keep other prisoners alive, but not producing Buna rubber at a viable production rate that would have assisted the Nazi effort.
Buna Rubber was named by BASF Ag, and through 1988 Buna was a remaining trade name of BASF.