Jan Vlak was employed at Volker Stevin Dredging bv for ten years on a wide variety of projects in The Netherlands and in Nigeria. In 1991 he joined the Ham where he is presently involved with the preparation, planning and implementation of the depot for dredged materials in the Ketelmeer
Articles By Jan Vlak
To create new land new techniques have been developed for the placement of sand in thin layers. They have proven both incredibly accurate and economical.