The electromagnetic decay properties of high-spin states in Mn-52 have been studied through various experiments with the GASP and EUROBALL arrays plus the ISIS light charged-particle detector and the Neutron Wall. From gamma-gamma particles coincidence measurements, spins, and parities of these states and branching ratios of their decay gamma rays have been determined. Using the Doppler-shift attenuation method the mean life of some states have been established. These results are compared with large-scale shell-model calculations in the full fp shell.