"As soon as the ramp had been erected in the castle, people started arriving in Kulmhof from Lizmannstadt in lorries... The people were told that they had to take a bath, that their clothes had to be disinfected and that they could hand in any valuable items beforehand to be registered...
When they had undressed they were sent to the cellar of the castle and then along a passageway on to the ramp and from there into the gas-van. In the castle there were signs marked "to the baths". The gas vans were large vans, about 4-5 meters long, 2.2 meter wide and 2 meter high. The interior walls were lined with sheet metal. On the floor there was a wooden grille. The floor of the van had an opening which could be connected to the exhaust by means of a removable metal pipe. When the lorries were full of people the double doors at the back were closed and the exhaust connected to the interior of the van...
The Kommando member detailed as driver would start the engine right away so that the people inside the lorry were suffocated by the exhaust gases. Once this had taken place, the union between the exhaust and the inside of the lorry was disconnected and the van was driven to the camp in the woods were the bodies were unloaded. In the early days they were initially burned in mass graves, later incinerated... I then drove the van back to the castle and parked it there. Here it would be cleaned of the excretions of the people that had died in it. Afterwards it would once again be used for gassing...
I can no longer say what I thought at the time or whether I thought of anything at all. I can also no longer say today whether I was too influenced by the propaganda of the time to have refused to have carried out the orders I had been given."