Reichswerke Hermann Göring

Reichswerke Hermann Göring ("Hermann Göring Reich Works") was an industrial conglomerate in Nazi Germany from 1937 until 1945. It was established to extract and process domestic iron ores from Salzgitter that were deemed uneconomical by the privately held steel mills.

Source: Wikipedia — Reichswerke Hermann Göring (CC BY-SA 4.0)