The hopper and bucket elevator recovery systems process up to 180 cubic feet per hour of dense and coarse media, such as steel grit and shot. With the 3 ft. x 3 ft. hopper system, flush mounting requires a pit just 4 1/2 feet deep. Where a high water table prevents excavation, the smaller 2 ft. x 2 ft. system can be wall-mounted and shovel fed.