Not far from the former inner German border are two salt mines, “Bartensleben” and “Marie,” located in the communities of Beendorf and Morsleben in Saxony-Anhalt. The salt mines were owned by the Magdeburg- based Burbach-Konzern (Burbach Group). In the last two years of the war, various vital war industries were relocated underground in caves, adits, mines, railway tunnels, and bombproof bunkers. Armaments suppliers to the aircraft industry were relocated to the salt pits at Beendorf and Morsleben for protection against Allied air raids. Male and female inmates of the Neuengamme concentration camp’s subcamp at Beendorf were deployed there, both for the relocation of the facilities as well as for armaments production. They were quartered in two large hangars of the Aerial Ammunition Institute (Luftmunitionsanstalt) aboveground, close to the adits. Hangar No. 13 accommodated 2,000 prisoners—about 800 men on the first floor and roughly 1,200 women on the second floor. In addition, some...