In this installation, materials are received in 50-pound bags and semi-bulk bags and are security screened for foreign objects while being conveyed to a weigh hopper, where they are automatically hatched in predetermined weights and discharged into process drums. Photo at right shows the bag dump station and bulk bag unloader. Hose connected to discharge of the bulk bag unloader can quickly be shifted to the discharge outlet of the bag dump station. Material is drawn by vacuum through the air-swept vibrating sieve in center and through the wall to the weigh hopper in an adjacent room, shown at lower right. Control panel for the weigh system is mounted in the wall at left of the hopper.

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