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Norway: Follobanen tunnel excavated ground may be contaminating the ground water

The TBM excavated mass was used in several places around Oslo. Only now the municipalities discover that it contains sulphate, potentially contaminating the ground water...

https://www.bygg.no/tbm-masser-lagt-ut-flere-steder-avrenningsvann-kan-vaere-forurenset/1537422!/

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