ScientificAmerican1902-11-08.jpg Scientific American 1902-11-01ThumbnailsScientific American 1902-11-15Scientific American 1902-11-01ThumbnailsScientific American 1902-11-15Scientific American 1902-11-01ThumbnailsScientific American 1902-11-15Scientific American 1902-11-01ThumbnailsScientific American 1902-11-15Scientific American 1902-11-01ThumbnailsScientific American 1902-11-15

A California single bucket gold dredger. By means of this machine the bottom of the river is dug up and delivered into a sluice whence the sand is separated and washed on gold-saving tables and the waste material is conveyed away by an endless carrier. The dredger Indiana provided with a conveyor and an auxiliary sand pump.



Source: Steve Kirch, creator of a wonderful website about SCIENTIFIC AMERICAN in the past

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