A ball mill (11) having a fixed base (13) with a mount (15) for receiving a main body (17) which is rotatable along a main axis. The main body has mounts (31) for receiving at least one planetary body (33), each planetary body (33) having a planetary axis located distal from and parallel to said main shaft axis. Each planetary body (33) supports at least one tubular ball mill pot (51) having a central axial extent perpendicular to said main shaft axis.
