Natural radioactivity arises from primordial radionuclides such as uranium-238, thorium-232 and potassium-40 present in rocks, soils, waters and biota. Assessment of environmental radioactivity ...
Bhabha Atomic Research Institute (BARC) officials on Sunday ruled out any possible health hazard due to exposure following seizure of an empty container of radioactive thorium nitrate from a grocery ...
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