Gold, Sapphires, and Dams

Helena historian and geologist Martin Landry presents a history of the gold and sapphire dredging operation at Eldorado Bar on the Missouri River northeast of Helena. Owned by the Perry-Schroeder Mining Company, the dredge was subsequently used in the construction of Canyon Ferry Dam and in dredging operations in South Carolina and Colorado. (February 20, 2014) www.montanahistoricalsociety.org