[en] Tissues from fourteen kangaroos were analysed for radionuclides. Seven kangaroos were collected inside the Olympic Dam mine lease and are referred to as 'mine sample animals'. Seven further animals (controls) were collected at distances greater the 30 km from the mine. Samples of three tissues (muscle, liver and bone) were taken from each animal and analysed for five radionuclides in the U-238 decay chain (U-238, Th-230, Ra-226, Pb-210 and Po-210). All radionuclides were near or below the limit of detection in muscle tissue from all animals; in addition activity concentrations for U-238 and Th-230 were very low in all tissues. There were low, but quantifiable, concentrations of U-238 and Th-23o in bone. However there was no statistically significant difference between control and mine samples for either radionuclide (Mann- Whitney two-tailed test). Quantifiable concentrations of Pa-226 were found in bone, but there was no significant difference between mine and control animals. Activity concentrations of Pa-226 in muscle and liver were low, and no significant differences in activities of Pa-226 was identified for either tissue (Mann-Whitney two-tailed test). In the case of Pb-210 and Po-210, concentrations in liver were significantly higher (both p < 0.005) in mine animals than in controls. In contrast Pb-210 activities in bone were significantly higher in control animals (p < 0.05). Pb-210 and Po-210 concentrations were very low in muscle and concentrations in mine and control animals did not differ significantly. There was no significant difference between mine and control animals identified in Po-210 activity in bone. Activity concentrations in all kangaroo tissues were low, and in most cases (12 of 15 comparisons) no significant differences were found. In the three cases (Pb-210 and Po-210 in liver and Pb-210 in bone) where statistically significant differences were observed, no consistent pattern was discernible. The results indicate that there is no significant difference in radionuclide concentrations in kangaroo tissue as a function of proximity to the mine.