Flexicon’s manual dump system collects dust generated during manual dumping, compacts empty bags and conveys bulk material downstream. The dust-free system is comprised of a receiving hopper, dust collector, bag compactor and flexible screw conveyor, as well as a bag infeed chute through the sidewall of the hopper and an automatic reverse-pulse filter cleaning system. The compactor employs a large pneumatic air cylinder to compress bags into a removable bin that accommodates 50 to 80 bags, and the hopper discharges into an enclosed, flexible screw conveyor designed to handle a broad variety of materials including free- and non-free-flowing bulk materials.