In Norway, robust low-tech solutions have always been the preferred measure for minimising and controlling the release of pollutants from disused sulphide mines. These measures include various capping solutions, sub-aqueous deposition, backfilling and the utilisation of natural water bodies. The main criterion for such solutions, in addition to low operating and maintenance costs, has always been to exploit naturally occurring geochemical reactions in order to come as close as possible to a geochemically stable situation. However, the complexity of the system usually makes it difficult to predict the accurate outcome of a given remediation measure and surprises will occur. Sometimes already implemented measures will have to be amended, preferably by new robust low-tech solutions. This paper describes such an attempt.