Gold dredge

Machine to extract gold from bodies of water

Gold dredge

A gold dredge is a placer mining machine that extracts gold from sand, gravel, and dirt using water and mechanical methods. Original gold dredges were large, multi-story machines built in the first half of the 1900s. In modern times the term refers to small suction machines marketed as "gold dredges" to individuals seeking gold.

From Wikipedia, under CC BY-SA. More on occurri.