Caption: Ground being excavated
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Caption: Man Excavates Mountain
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Caption: Mining For Information
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Caption: The rocker, or cradle, form of placer mining enabled one miner to handle more material than by simple panning
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Caption: Chiseling Earth
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Caption: Businessman mining for dollar signs
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Caption: Miners finding beaker in factory
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Caption: Four steps in the formation of a complex impact crater, resulting in a central peak and terraces of collapsed material
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Caption: Construction workers digging a hole
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