The EODD disarms explosives from the Second World War more than 2,000 times a year. So-called clearance reports are made, keeping track of where the explosives have been cleared. ECG has digitised 30,000 of these clearances in a Geographic Information System (GIS) and made them rapidly searchable for historical preliminary research. The information about previously cleared explosives is of great importance in determining whether there is an increased risk of finding explosives in a work area.