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The determination of the radionuclides of U- and Th-series as well as of 40K and 137Cs in soils and waters in a lignite mining area was performed. The measurements in the soils were undertaken by γ-ray spectrometry while the concentrations of 234U and 238U in waters and the isotopic ratio 234U/238U were determined by α-ray spectrometry. Slight seasonal variation of the radioactivity was observed with...
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