DOP Pump 250 with special head

The DOP250’s Boskalis’ design suction pipe is equipped with high pressure jets, loosening the soil. Thus, a hole is created in the top soil layer.

Along the waterfront in Harderwijk, an old town in the centre of The Netherlands, a new residential area is to be built. The site was formerly used as industrial area, which has resulted in a polluted top layer of the soil. To avoid handling this polluted material, Boskalis used an innovative and challenging method: a DOP250 was used to mine clean sand from deeper down, and cover the polluted layer - which remained in place.


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