Historic Mining Operations - Northeast Oregonn
From Gildemeister Stock Image Archives
copyright 2002-2018 - Gildemeister
Hydraulic mining operation - ca 1900
Hydraulic mining operation - ca 1900
Hydraulic mining operation - ca 1900
Hydraulic mining operation - ca 1900
Gold-mining Dredge - Sumpter, Oregon
Grande Ronde River dredge tailings of 1940s