This key refers to other maps that depict the extent of contamination from the Chernobyl disaster. Interestingly, it indicates that maps of Cesium-137 distribution were much more detailed than those of Strontium-90 from the same month and year; while…
This map shows the spread of Strontium-90 contamination in the area of eastern Belarus and western Russia surrounding Gomel' in December 1990. It is one of a set of four Soviet-produced maps showing strontium contamination from the same point in…