The original post: /r/todayilearned by /u/JonnySparks on 2025-01-27 12:57:41.

Original Title: TIL that, following WW2, a German engineering company - JA Topf & Sons - continued in business under different names until 1996. JA Topf & Sons designed and built gas chambers and crematoria ovens for Auschwitz, Buchenwald, Dachau and other concentration camps.