Mauthausen concentration camp
At the Mauthausen complex, there were quarries, weapons factories, mines, and plants that assembled Me 262 fighter aircraft. The prisoners at Mauthausen and its subcamps were forced to work as slaves in these places. In fact, the Nazis decided to build a camp complex in Mauthausen because the town was close to some granite quarries. By 1942, over 3,300 prisoners were working in the quarries at Gusen and the main Mauthausen camp.