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The project New Water Supply Oslo (Norwegian abbreviation: NvO) invites machine suppliers of relevant tunnel boring machines (referred to as TBM) to 1-on-1 meetings regarding the pending tender contest for the project E6 Clean water tunnel. In the meetings with the suppliers, NvO wants to identify technical possibilities and possible limitations in the current technology when choosing a TBM type, etc. for drilling the 12 km long clean water tunnel with an internal diameter of approx. 6.5 m.