alb8361913

The rocker, or cradle, form of placer mining enabled one miner to handle more material than by simple panning.

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Caption:

The rocker, or cradle, form of placer mining enabled one miner to handle more material than by simple panning.

Credit:

Album / Universal Images Group / Encyclopaedia Britannica

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Image size:

3825 x 3055 px | 33.4 MB

Print size:

32.4 x 25.9 cm | 12.7 x 10.2 in (300 dpi)

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