Radionuclides in soils of the Eastern Urals Radioactive Trace

We have determined the Sr-90 and Cs-137 content in soils of the central axi s of the Eastern Urals Radioactive Trace in its eastern and western section s. Within the Chelyabinskaya and Sverdlovskaya Oblasts, 40 years after the 1957 Kyshtym accident, the 90Sr inventory in the soils of the central axis of the Trace in the immediate vicinity of the contamination source is 1200- times higher than the control levels, and at a distance of more than 100 km it is 6-20-times higher than the control levels. The Cs-137 inventory with in a 30-km zone around the Mayak Production Association facility (9-15 kBq/ m(2)) does not depend on the distance from the contamination source.