Translations:Hauptseite/119/en

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  Outdoor storage of products made of heavy concrete on the Eider: in this case, Hofmann spirals. In the background you can see the elms at the rear of the car park, which were still young then, and are now fully grown trees.
  
  

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  A special product of the first SAB years: the so-called Hoffmann separating spiral for domestic sewage treatment plants is cast from concrete.