Water pollution from abandoned mines
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- NIVA-rapport 
The report provides a country-wide overview of abandoned pyrite mines where operations have been fairly extensive. The water pollution situation is assessed on the basis of reported investigations, inspections and chemical analyses from the individual areas. In cases where larger watercourses (Orkla, Gaula), and the upper stretch of the Glåma are affected the situation appears to be adequately described. However abandoned mine areas may also cause local pollution problems, and here documentation is rather sparse. Possible counter measures must be evaluated with respect to user interests in the area.