Yes - Auschwitz (spelling) was part of the network of extracting raw materials (coal etc) from the land to contribute to the national economy. This was done partly with the use of slave labour from political prisoners in the concentration camps.
Auschwitz did not become a mass-extermination camp until about 1942, when the decision was made by the Nazi government to kill all the Jews in Germany and in the occupied areas.
When the Nazis came to power in 1933, the initial attitude towards how the Jewish "problem" should be "solved" was that they should be gradually excluded from society, marginalised, deprived of their property and expelled. The process of expelling Jews from the occupied areas (to America, Britain, Palestine, Switzerland or wherever) gradually became more and more difficult because the countries which received Jewish refugees put more and more restrictions on the numbers accepted, and put conditions on accepting only those who had wealth and could support themselves or contribute to the economy. These restrictions came into being because the Nazis wanted to strip the Jews of all their wealth and possessions before expelling them.
These factors gradually produced a vicious spiral which meant that there were gradually fewer and fewer possible "solutions" of what should be done with the jews, and eventually led to the simplistic decision that they should all be killed rather than expelled. This is why the extermination programme did not start until the 1940s, and the concentration camps were used for re-settlement and forced labour for a number of years before the extermination began.



