Advanced "Eddy Pumps" are sometimes used because they can handle high concentrations of solids (up to 80%) and heavy materials like gold without clogging.
Dredges are piloted into open waters, and divers descend from boats to suck up paydirt using heavy-duty hoses. Bering Sea Gold
Miners cut holes through several feet of ocean ice, setting up temporary shelters to dive into the freezing water below. Core Equipment & Technology Advanced "Eddy Pumps" are sometimes used because they
These use high-powered pumps to move material. Experts like Emily Riedel recommend a 10-inch hose for serious operations. Bering Sea Gold