There had been plans dating back to 1939 to build an armaments plant in the Herzograd Forest near the Lower Austrian community of Sankt Valentin, which was conveniently located at a railway junction.
The construction cost of 65 million Reichsmarks was paid by the Reichswerke Hermann Göring and the factory was from the outset very generously specified.
In order to maintain production even after bombing raids, the factory was supplied with electricity, compressed air, heat and water through an underground system.
Thus, in addition to the toleration of a brothel in the camp settlement, the skilled workers were allowed holidays, which after the successful Allied invasion of Normandy had the consequence that many Frenchmen did not return.
After the Red Army occupied the factory on May 9, 1945, production continued on a small scale, so that some Panzer IVs could be made available for the victory parade in Moscow.
The former supplier company Eisenwerke Oberdonau is today the most important steel factory in Austria and belongs to Voestalpine.
The agricultural machinery manufacturer CNH Global has its European headquarters in St. Valentin and uses three former Nibelungenwerk halls for the production of tractor cabins.
The former Nibelungenwerk's entrance building and canteen are still in use, and the hall located to the east is used by Magna International for the production of vehicle components.