The aim of this multi-discilinary collaborative project is to analyse a variety of biodosimetric tools and adapt them to different mass casualty scenarios. The following biodosimetric tools will be validated and established: the dicentric assay, the micronucleus assay, the gamma-H2AX assay, the skin speckle assay, the blood serum protein expression assay and EPR/OSL dosimetry in components of pocket electronic devises. The assays were chosen because they complement each other with respect to sensitivity, specificity to radiation and the exposure scenario as well as speed of performance.