 At any given time, Treblinka I had a workforce of 1,000 – 2,000 prisoners, most of whom worked 12- to 14-hour shifts in the large quarry and later also harvested wood from the nearby forest as fuel for the open-air crematoria in Treblinka II. There were German, Czech and French Jews among them, as well as Poles captured in łapankas, farmers unable to deliver food requisitions, hostages trapped by chance, and people who attempted to harbour Jews outside the Jewish ghettos or who performed restricted actions without permits. Beginning in July 1942, Jews and non-Jews were separated. Women mainly worked in the sorting barracks, where they repaired and cleaned military clothing delivered by freight trains, while most of the men worked at the gravel mine. There were no work uniforms, and inmates who lost their own shoes were forced to go barefoot or scavenge them from dead prisoners. Water was rationed, and punishments were regularly delivered at roll-calls. From December 1943 the inmates were no longer carrying any specific sentences. The camp operated officially until 23 July 1944, when the imminent arrival of Soviet forces led to its abandonment.
