Sink works

 ( Mining Techniques ) 

Sink works or sinkworks (from German Sinkwerke) is a method of salt mining from salt deposits in mountainous areas. It is similar to in that salt was extracted by dissolving it in water. Both approaches simulate natural . It is one of the earliest methods of salt extraction from . Salz aus Berchtesgadens Bergen Meyers Konversations-Lexikon, 6th edition, . vol. 17, Bibliographisches Institut, Leipzig 1902–1909, entry "Salt", pp.495-498

A sinkwerk is a chamber in a salt mine filled with water to dissolve salt. The resulting brine is then pumped via to saltworks.Moritz Ferdinand Gätzschmann, Sammlung bergmännischer Ausdrücke, 1881 (Google eBook), p. 89

This approach is commonly used when salt deposits are heavily contaminated (or, alternatively, when salt content in the deposit is low), so that mining of rock salt is not feasible. This method is common in most salt mines in Alps, where the saltrock-mudrock-tectonite known as Haselgebirge is widespread, with average halite content of 30-65%. "Structure and evolution of a rocksalt-mudrock-tectonite: The haselgebirge in the Northern Calcareous Alps", Journal of Structural Geology.

In industrial cases, a complex structure of underground chambers interconnected by tunnels is created.

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