Predictions of ¹³⁷Cs activity concentrations in milk using a process-based soil–plant model for the different soils types; for comparison predictions using FDMT are also given. Top: predictions over 27 years; bottom: predictions over the first 90 d after deposition. Note: an expanded and refined application of the Sr and Cs soil–plant process-based models to the Borsselle scenario is presented and discussed in Brown et al. (2020).