. At least 434,500 Jews were killed at Bełżec, along with an unknown number of Poles and Roma; only two Jews are known to have survived Bełżec: Rudolf Reder and Chaim Hirszman. The lack of survivors may be the reason why this camp is so little known despite its number of victims. Camp construction and purposes Belzec extermination camp, the model for two others in the 'Aktion Reinhard' murder program, started as a labor camp in April 1940, after the abandonment of the plan t… (More on Belzec)