Contents of radionuclides in soil and biota at the site of the Kraton-3 accidental underground nuclear test, Yakutia

The paper presents results of radiocological monitoring at the site of the Kraton-3 accidental underground nuclear test in Yakutia. The distribution and migration of 137Cs, 90Sr, 237Np, and 238–240Pu in the soil and its living cover of the northern taiga are analyzed, and it is demonstrated that the radioecological conditions at the territory are still adverse in spite of the rehabilitation measures.