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Dredge

By Alaska Science Center
Placer tailings with rocks and vegetation covered mounds in foreground. A large mining dredge in right corner and cloudy sky.
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Detailed Description

Historic dredge and large volume of gold placer tailings that contain platinum group and chromium critical minerals on the Salmon River near Goodnews Bay, Alaska. Dragline-sluice tailings are in the foreground, stacked dredge tailings are in the background near the dredge.

Sources/Usage

Public Domain.

Photo by Susan Karl, U.S. Geological Survey