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dc.contributor.institutionColorado Digitization Project
dc.contributor.institutionNational Mining Hall of Fame and Museum
dc.date1898?-1899?
dc.date.accessioned2007-01-03T05:54:07Z
dc.date.available2007-01-03T05:54:07Z
dc.descriptionDredge on the Swan - Breckenridge.
dc.descriptionDate scanned: 2001-03-27.
dc.descriptionIdentifier: NMHFM-209.
dc.descriptionRelated photographs: NMHFM-202, NMHFM-203.
dc.descriptionUnmounted; text on verso.
dc.descriptionHeld in the National Mining Hall of Fame and Museum.
dc.descriptionDonor: Charles Burgess.
dc.description.abstractPhotograph showing the bow gantry and bucket line on one of the first two dredge boats to mine the placer gravel deposits along the Swan River near Breckenridge. They were owned by the North American Gold Dredging Company and built by the Risdon Company on the river in 1898. They were the first dredge boats to be used in Colorado and were largely experimental. They were steam operated, and a bucket line fed gravel into the dredge where the gold was separated from the gravel, and the stacker discarded the tailings. However, these stackers were too short, and the tailings fell back into the pond under the dredges. The dredge boats were refitted with longer stackers, but these dredges proved to be too small and light to mine the heavy gravels of the Swan River.
dc.description.sponsorshipSponsored by the Colorado State Library, the regional library systems of Colorado, and the Institute of Museum and Library Services.
dc.identifierlibimagesNMHFM209
dc.identifier.urihttp://hdl.handle.net/11124/8752
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.rightsRights management statement available at: http://library.mines.edu/digital/rights.html
dc.subjectDredges and dredging
dc.subjectGold mines and mining
dc.subjectMining
dc.subjectPlacer mining
dc.titleDredge boat on the Swan River, Breckenridge
dc.typePhotograph


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