How did Jews die in gas chambers?

Jews from the Lodz area of Poland and Roma were killed there in mobile gas vans. Belzec, Sobibor, and Treblinka. In 1942, systematic mass killing in stationary gas chambers (with carbon monoxide gas generated by diesel engines) began at Belzec, Sobibor, and Treblinka, all in Poland. read more

I think, but never having died by cyanide gas, am not sure that a person would perceive that death as suffocation or asphyxiation, but it would not be due to there being more HCN in the air than oxygen in the air, like most people think of asphyxiation. read more

On the same day, the German firm IG Farben sets up a factory just outside Auschwitz, in order to take advantage of Jewish slave laborers from the Auschwitz concentration camps. Sobibor had five gas chambers, where about 250,000 Jews were killed between 1942 and 1943. read more

The frail and elderly who could not walk were taken to a nearby chapel and routinely shot in the back of the head. Later a railway was specially built to carry them to the gas chambers. The Polish Jews murdered in Sobibor hoped to the very last that they might find a way of getting out. read more