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Breakthrough Geitåni 1200mm

On Saturday, July 15, we received a breakthrough for the tunnel at Geitåni Kraftverk at Voss. Drilling of the tunnel with a diameter of 1200 mm over a length of 240 m was carried out in two rounds. First controlled bore Ø700 mm with ND700HR machine and then up to Ø1200 mm with NR1200HR machine.





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