Principle: Multi Mill is designed to utilize the principle of variable force swing beaters having both knife and impact edges rotating within a selected screen to control the particle reduction. Material fed in to the processing chamber moves to the periphery and passes through the screen radially and tangentially. Critical Process Parameter (CPP): Screen Size/Integrity of Screen/Speed/Knives Orientation CPP Acceptance Criteria: 8.0 mm/Should be Integral/Slow Speed/Forward