Radon in Belgium: Mapping and Mitigation in the Affected Area of Visé

The massif of Vis� is well known by geologists for its special geological features, in particular the great abundance (N>30) of important uranium anomalies. The measuring campaigns conducted over the past years in several hundreds of houses resulted in a detailed radon map with clear indication of risk areas. Based upon the available information some 160 houses (2% of the building stock) are expected to have real radon problems (>400 Bq.m-3). Up to now 24 of these problem houses have been localised. Three of the most contaminated houses (>3000 Bq.m-3 in the living areas) have been stu... Mehr ...