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