Residual Eu-152 activities induced by neutrons from the Nagasaki atomic bomb were measured for nine mineral samples located up to 1,061 in in the slant range and one control sample at 2,850 in from the hypocenter. A chemical separation to prepare europium-enriched samples was performed for all samples, and gamma ray measurements were carried out with a low background well-type germanium detector. In this paper, the measured specific activities of Eu-152 are compared with activation calculations based on the DS86 neutron fluence and the 93Rev one. The calculated-to-measured ratios are also compared with those of Co-60 and Cl-36. The present results indicate that the measurements agree to the calculation within a factor of three as observed in the nuclear tests at Nevada. The activation level of environmental neutrons and the detection limit for Eu-152 are also discussed.