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Scientific American 1903-08-01

ScientificAmerican1903-08-01.jpg Scientific American 1903-05-30ThumbnailsScientific American 1904-04-16Scientific American 1903-05-30ThumbnailsScientific American 1904-04-16Scientific American 1903-05-30ThumbnailsScientific American 1904-04-16Scientific American 1903-05-30ThumbnailsScientific American 1904-04-16Scientific American 1903-05-30ThumbnailsScientific American 1904-04-16

Improvements in steam shovels. Ninety-five ton shovel. Mining ore.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner