I'm afraid that number's ex-directory <a href=" http://www.buscadichos.com/essay-about-art#stolen ">publishing houses</a> Zuroff estimates that about 60 potential war criminals are still alive including around 50 former guards at Auschwitz in Nazi-occupied Poland. Auschwitz was the largest Nazi concentration camp where Jews and others were delivered by transport trains, killed in gas chambers and their bodies burned in crematoriums.