Belgium CH. Kesteleyn DEME Building Materials (DBM) NHM Granulates Danmark NCC Rastoffer Germany Mibau Stema Greece Golden Sand Netherlands Aannemingsbedrijf Geluk BV De Hoop Terneuzen Mijnster Zand- en Grinthandel Reimerswaal Dredging Spaansen SDH United Kingdom Brett Group CEMEX United Kingdom Hanson - a HeidelbergCement company Kendalls Group Llanelli Sand Dredging Ltd. Tarmac Marine Aggregates USA E.R. Jahna Industries Inc.