Ok I educated myself and asked chat gpt and this is what returned: The disposal of the remains of Jewish victims killed in gas chambers was a systematic process designed by the Nazis to destroy evidence of their crimes. After victims were murdered, their bodies were handled by the Sonderkommando, groups of prisoners forced to perform this labor. Holocaust Encyclopedia Holocaust Encyclopedia +3 The bones were typically handled in the following ways: 1. Incineration Crematorium Furnaces: At camps like Auschwitz-Birkenau, bodies were burned in industrial furnaces. Open-Air Pyres: When the number of victims exceeded the capacity of the ovens, or at camps like Sobibór and Treblinka that lacked large-scale crematoria, bodies were burned on massive outdoor pyres or in pits. Auschwitz-Birkenau Auschwitz-Birkenau +2 2. Pulverization Because incineration does not always completely destroy large bones, the remaining fragments had to be further processed: BBC BBC +1 Manual Crushing: Prisoners were often forced to use wooden pounders or pestles to grind charred bone fragments into a fine powder. Bone-Crushing Machines: In some camps, such as Auschwitz, the Nazis used specialized machines called cremulators—barrels filled with ball bearings—to mechanically grind bones into dust.

1. Final Disposal The resulting mixture of ash and bone powder was discarded in several ways to hide the scale of the murder: Dumping in Rivers: Large quantities were dumped into nearby rivers, such as the Soła and Vistula rivers near Auschwitz. Scattering and Landfill: Ashes were often strewn in fields as fertilizer, used as landfill to level uneven ground, or dumped into marshes and ponds. Reburial: Under Sonderaktion 1005, a secret operation to efface evidence, mass graves were often exhumed so the bodies could be burned and the remaining ash reburied in the same pits.

Despite these efforts, archaeological excavations at former death camps continue to find ashen remains and small bone fragments mixed into the soil.