Gas Chambers
The Nazi'z began experimenting with exterminating using gas. Gas Chambers were use to murder mental patients and Jews who were "unworthy of life" because of there mental illness or physical disability. 6 gassing installations were established as part of the Euthanasia Program in Bernburg, Brandenburg, Grafeneck, Hadamar, Hartheim, and Sonnenstein. These killing center used pure, chemically manufactured carbon monoxide gas. They thought that gassing was the most efficient way of achieving the "Final Solution". In 1942, systematic mass killing in stationary gas chambers (with carbon monoxide gas generated by diesel engines) began at Belzec, Sobibor, and Trebelinka, all in Poland. As victims were "unloaded" from cattle cars, they were told that they had to be disinfected in "showers." The Nazi and Ukrainian guards sometimes shouted at and beat the victims, who were ordered to enter the "showers" with raised arms to allow as many people as possible to fit into the gas chambers. The tighter the gas chambers were packed, the faster the victims suffocated. They told the prisoners that they were going to take showers but they killed them slowly with gas.