The Hicom nutating mill is a high intensity compact grinding mill of novel design. It is an adaptation of the centrifugal mill concept, but unlike the centrifugal mill, it＇s grinding chamber geometry and motion can only be adequately described in three dimensions. This has prompted an investigation into the load behaviour characteristics of the Hicom mill. Measurements of the Hicom mill＇s load behaviour have been made using conductivity and force probes passing through the shell of the mill. The results have shown that the load behaviour is unique and that existing two-dimensional load behaviour models for centrifugal mills are inadequate to describe the Hicom mill＇s load behaviour. The uniqueness of the Hicom mill＇s load behaviour is believed to be as a result of the vertical acceleration component of the chamber wall and base acting on the load.