Exhaust-Only Ventilation Exhaust-only ventilation is the reverse of supply-only ventilation; stale air leaves the building from a known location (through exhaust fans ducted to the outdoors) and outdoor air enters the building from an unknown location.
In the 1960s, the Soviet Union began to prepare the Warsaw Pact for its internal function of keeping the NSWP member states within the alliance. The Soviet Union took a series of steps to transform the Warsaw Pact into its intra-alliance intervention force.
Their purpose was the administration of the Nazis' Final Solution -- the extermination of the Jewish people. After the defeat of Poland, the Einsatzgruppen rounded up all Polish Jews and put them in ghettos, where living conditions were horrible. In June 1941, the Einsatzgruppen were given the new job of acting as mobile killing units. These SS death squads followed the regular army's advance into the Soviet Union. Their job was to round up Jews, execute them, and bury them in mass graves. Although the Einsatzgruppen were responsible for killing an estimated one million Jews, they were too slow by Nazi standards, which led the Nazis to build death camps