The radioactive cloud on Milan and other neighbouring sites

The radioelements spread from the nuclear disaster in Ukraina reached the Milan atmosphere the evening of April, 30. A number of measurements started on air particulate; a number of radioelements was evidenced: Iodine, Tellerium, Cesium, Ruthenium and other. Then the presence of radioelements have been found in rain, in the first days of May, and consequently in the soil. Different samples show that the level of radioactivity in the Como lake area was greater than the average levels in Lombardy by a factor 2 or 3. Direct measurements of the gamma level on the ground give more evidence to this fact. The role of the rainfalls is discussed