(Oregon)
The Sumpter Valley Gold Dredge is a historic gold dredge located in Sumpter, in the U.S. state of Oregon. Gold was discovered in Sumpter in 1862. Three gold dredges were put into service in the Sumpter Valley district between 1912 and 1934. (Ref: https://en.wikipedia.org/wiki/Sumpter_Valley_Gold_Dredge)