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HulromKraterUnderForing.avi

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Uploaded by on Jan 4, 2010

Oppsprekking og hulrom i borehullet rett under foringsrøret kan være et problem i noen brønner. Dette kan i noen tilfeller føre til innlekkasje av dårlig renset overflatenært grunnvann eller overflatevann, og dermed føre til forurensning av brønnen.

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