The 17-inch Gold Magic® pan is computer designed for maximum gold recovery. As the wheel turns and you deposit material into the wheel, some of that material will immediately move up the wheel into the concentration cup. As gold and other more dense material arrives at the concentration cup, it replaces less dense material in the cup so that the center cup is continually filling with the most dense material in the pan.
There are 69 agitator knobs, (1B), in the primary processing area of the Gold Magic pan. These agitator knobs move through the material in rapid succession causing it to mix and tumble, all designed to quickly get the gold into area (1-C). The larger, low density materials will be expelled from the pan while the heavier, smaller materials (black sand, gold, platinum, and gemstones) will be carried up the spiral riffle into the removable concentration cup.
Please refer to the Owner's manual for more details: