Washing out gold using hydraulic mining equipment in the Salmon River Country, Lemhi County, Idaho. Hydraulic mining was done alongside mountains and riverbank.
Open connected bucketline "Risdon" type dredge operated at Warm Springs near Idaho City, Idaho August 1899. The steam powered dredge was one of the first dredges operated successfully in the Boise Basin.
K.P. Plowman's claim near Idaho City. Miners sitting on hydraulic equipment. 1st row l to r: 1. Fred Garrecht, 2. Clay Mosher, 3. John Barry, 4. Louis Garrecht, 5. 6. 2nd row l to r 1. Ed Foster 2. Will Garrecht, 3. 4. William Horton, 5. Arch...
Hydraulic placer mining on the Boise River near Twin Springs in Elmore County, Idaho. Photo shows a miner operating a hydraulic giant on a hillside while another miner is inspecting the runoff in the ground sluice below.