The present paper deals with the grindability experimental results of an Australian bauxite sample in the Universal Hardgrove mill, the Universal Bond ball mill and the heat insulated Bond Rod Mill in the temperature range from 20 up to 80 degrees C. As previously observed the grindability of the bauxite has improved at elevated temperature. The specific grinding energy decreased. Correlation between the Bond Work Indices calculated from three different method (HGI, Bond Ball Mill Work Index and Bond Rod Mill Work Index) was established. Appropriate correlation in the investigated temperature interval was found. Pore size distribution, SEM and BET results show that in spite of the good correlation between the grindability characteristics, the material properties of the ground products have significant differences. Namely, the various grinding stresses resulted in different material pore size distribution and specific surface area. (C) 2016 Elsevier B.V. All rights reserved.