"Q: How long did the Russians take to die?
A: I do not know. I only obeyed orders.
Q: How long did it take to gas the Russians?
A: I returned after two hours and they were all dead.
Q: For what purpose did you go away?
A: That was during lunch hour." SS-Unterscharführer Wilhelm Bahr
One of the first gas cameras in Maidanek.
At first death was induced by carbon monoxide
asphyxiation, but later hydrocyanic, or prussic, acid fumes
were used following successful tests at Belzec.