When I worked there, and I spent 2 field seasons in 1993-94 in the 80-120Ci/sq.km zone, we had two proverbs, briefly translated as: "If you want to be a parent, keep you balls contained in lead" and "You can eat apples here, but you should bury stubs at least 140 cm deep". Only the second one was true. Mesocarp of fruits was clean, but seeds were normally contaminated with Cs 137 (replaces potassium in meristema).