Nestable highbanker

A hopper assembly for accepting placer deposit and water for use with a highbanker, the hopper assembly comprising:

• a hopper comprising:
• an intake surface for accepting the placer deposit;
• a hopper periphery portion extending along at least three sides of the hopper;
• a water intake configured to accept water, the water intake located within the hopper periphery portion;
• and
• a window configured to receive the placer deposit and water from the intake surface and to allow the placer deposit and water to exit from the hopper;
• and
• a cover comprising:
• a cover surface configured to fit over the hopper periphery portion;
• and
• a plurality of cover openings formed on the cover surface;
• wherein the cover surface and the hopper periphery portion define, at least in part, a hollow within which water from the water intake flows, the hollow extending along the at least three sides of the hopper;
• and
• wherein the cover openings are configured to allow for water to exit the hollow and contact the placer deposit on the intake surface.