International Association of Dredging Companies - IADCMutual Insurance Association - MUNISSite Investigation Bureau – SIBI am in charge of a secretariat with 8 colleagues:• We inform the world what dredging is all about• We co-insure a dredging fleet of nearly €10 billion• We facilitate joint soil investigations IADC, Secretary GeneralWe publish the technical journal Terra et Aqua, Factsheets, books and articles. We inform all kind of stakeholders by making use of social media and an excellent website. I give presentations worldwide, visit conferences and represent the dredging industry in several international networks. MUNIS, Managing DirectorWe co-insure as a to-follow insurer the dredging fleet of the 4 world market leaders on dredging. As a monoline insurance company we are well re-insured. SIB, DirectorWe coordinate joint site investigations all over the world on request of dredging companies.

VHGLandscaping Contractors and Gardeners Association• Social and economic policies in the industry• Board member of the Advisory Centre for Contracts and Tenders• Member of the Commission of Government Tenders VNO-NCW• Secretary Dutch Landscaping Contractors Association• Director VHG Consultancy• Represent VHG in respect of the Anti-trust procedure in the sector

Building equipment company.

Wholesale, articles for drugstores.

Construction company

Producers of blinds and shutters.