Abstract: A bulk supply hopper includes a hopper body for holding a plurality of bulk material items and defining a bulk supply hopper opening, a bulk supply hopper impelling means for impelling the bulk material items toward the bulk supply hopper opening, a bulk material separation means, arranged in the bulk supply hopper opening, for separating the bulk material items, and a control door disposed proximate to the bulk supply hopper opening. The bulk supply hopper, equipped with a control door, prevents dumped bulk material items from exiting the bulk supply hopper. The bulk supply hopper, using a conveyor belt as the bulk supply hopper impelling means, significantly reduces radiated noise. Additionally, the bulk supply hopper including opposed, substantially upright side walls, enhances the effectiveness of the conveyor belt.