The invention also provides, in a preferred embodiment, {HEAD ~ a method} of destroying a material, comprising the steps of: feeding {TAIL ~ the material} at a predetermined positively controlled rate towards a zero clearance portion formed between a cutter and at least one sacrificial blade or round bar; grabbing the material with a tooth of the cutter; pulling the material into the zero clearance portion with the tooth of the cutter; and disposing the material between the cutter and the sacrificial blade or round bar at the zero clearance portion 
The invention also provides , in a preferred embodiment , { HEAD ~ a method } of destroying a material , comprising the steps of : feeding { TAIL ~ the material } at a predetermined positively controlled rate towards a zero clearance portion formed between a cutter and at least one sacrificial blade or round bar ; grabbing the material with a tooth of the cutter ; pulling the material into the zero clearance portion with the tooth of the cutter ; and disposing the material between the cutter and the sacrificial blade or round bar at the zero clearance portion
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