Modern pulp mills tend to apply cleaner and environment friendly processes generally by recycling and reusing various streams into the evaporation system and the reduction of discharges. This kind of closure leads to a build-up of non-process elements (NPEs) mainly in the chemical recovery system. Chemicals which accumulate in the mill cycles originate either from the wood raw material, process water and make-up chemicals. Natural purging places, generally referred as kidneys, are associated to the removal of these elements as green liquor dregs, grits or lime mud. The purpose of this study is to evaluate the routes of NPEs in a modern eucalyptus kraft pulp mill. An extensive sampling campaign was carried out at the studied mill. Samples were taken from all the main process streams to achieve an overall picture of the inputs, outputs, and enrichment in the mill. Complete mass balances were accordingly constructed for the entire mill. The results of this study can be utilized in the non-process element management at the mill and they serve as a good basic material for the further mill specific simulations.