The Hindenburg Sub-Camp was one of satellite camps of Auschwitz focusing on heavy industry. The steel mill in Zabrze, existing before the war, started to focus on military products when Germans took over control in it.
There were mostly women working in the sub-camp (over 400), with much less number of male prisoners sent there in autumn 1944. Most of the female prisoners were working on ammunition manufacture. Men were most probably working in a cooking plant and a mine.