Specialists in Soil Investigation
| Klokgroep | Combined UXO, environmental and archaeological survey Nijmegen |
| BAM Infra | Archaeological supervision railway underpass Dieren |
| Markus BV/De Nijs | Archaeological excavation foundations of a mill, Wormerveer |
| GMB - Van Oord | Combined UXO and archaeological survey Meinerswijk Arnhem |
| Gemeente Bronckhorst | Archaeological assistance of the salvaging of an aircraft from WWII |
| Hoogheemraadschap van Rijnland | Trial trench evaluation for excavations of Sluiseiland Halfweg |
| Provincie Utrecht | Trial trench evaluation floodplains Rhenen |
| Gemeente Zundert | Trial trench evaluation trajectory ringroad Zutphen |
| Witteveen + Bos | Combined UXO and archaeological suvey Afsluitdijk |
| Water Authority Rijnland | Desk study and Archaeological supervision Inlaagpolder, Spaarndam |
| Municipality of Landgraaf | Combined UXO and archaeological survey for construction of a water buffer |
| Dura Vermeer | Archaelogical desk research for location of several bridges in Noord-Holland province |
| Eneco | Archaelogical desk research for location of a wind farm, Noordersluiseiland, IJmuiden |
| Uithoflijn Utrecht | Prospective probing and archaeological supervision of tram track construction |
| Markus | Prospective probing and archaeological supervision construction eco passage De Schie |
| Liandon | Prospective probing island of Texel for construction of gas pipeline |