Alpine AS Spiral Jet Mill Hosokawa Micron Powder Systems. Alpine TDG/TTG Twin Turbo Opposed Jet Mill The Alpine TDG/TTG Twin Turbo Opposed Jet Mill is one of Hosokawa's most advanced, efficient and accurate size reduction systems. Alpine TFG Fluidized Bed Jet Mill The Alpine TFG Fluidized Bed Jet Mill was developed especially for fine grinding ...