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Case study published: Predrilling and preparation of flint layer for Copenhagen Metro

Predrilling and preparation of flint layer for Copenhagen Metro

The Copenhagen Metro system is being extended with a new line, the City Circle Ring.

Wassaras water-powered drilling is used for identification and preparation of the subsoil flint layer. As flint stone is very abrasive to the hydro mills, Wassara is used for identifying and weakening this flint layer.

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The case study as PDF