This collection contains the information from about 250 Jews, mostly Polish, who were sent to work in a rubber factory. They were originally in Auschwitz before they were transferred to the subcamp of concentration camp Neuengamme, which is located in Ahlem/Hannover, and later perished there. These records contain names, date and place of birth, occupation, and the date and place of death. The story can be found in a book called Wir wollten Gefühle sichtbar werden lassen by Janet Anschütz and Irmtraud Heike, Edition Temmen, 2004.
You can learn more about this database at the JewishGen website.