Primary tire chips are then fed to the Granutech Model 50 Grizzly. This unit is an intermediate-speed grinder that utilizes an internal screen. The primary tire shreds are reduced to a minus 3/8” material in the Grizzly. This reduction will allow ferrous metal from the bead and tread area to be liberated, and then magnetically separated, providing a material that is up to 98% metal-free for ease of further processing. An aspiration system evacuates airborne particulate produced from dust and fiber. Material at this stage can be marketed as high quality low-steel tire derived fuel (TDF) for a wide variety of combustion applications. Further steel separation allows production of steel free rubber.