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Building a trestle bridge at the open-pit mines of the Utah Copper Company. Sourced from the Library… https://www.rawpixel.com/image/12308149/image-people-wood-public-domainFree Image from public domain licenseConstruction workers reading the note in the construction site. https://www.rawpixel.com/image/71134/premium-photo-image-truck-adult-architectView license[Untitled photo, possibly related to: Bingham Canyon, Utah. Building a trestle bridge at the open-pit mines of the Utah… https://www.rawpixel.com/image/12307887/image-person-wood-public-domainFree Image from public domain license[Untitled photo, possibly related to: Workmen using viberators which spread the wet concrete in construction of Shasta Dam… https://www.rawpixel.com/image/12171546/image-people-art-vintageFree Image from public domain licenseWorkers in gold mine coming out of cage which brings them to the surface at the end of the day's work. 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Sourced from the Library of… https://www.rawpixel.com/image/12337838/image-person-wood-public-domainFree Image from public domain licenseWilliam Besson, mining prospector, near Winton, Minnesota. The windlass is homemade by Russell Lee https://www.rawpixel.com/image/12148205/image-plant-person-artFree Image from public domain licenseMiners at shaft of copper mine, Butte, Montana. Sourced from the Library of Congress. https://www.rawpixel.com/image/12314731/image-person-wood-public-domainFree Image from public domain licenseMorenci, Arizona. Entrance to the copper concentrator of the Phelps Dodge mining corporation where ore trains transport… https://www.rawpixel.com/image/12337774/image-person-public-domain-factoryFree Image from public domain licenseExcavating work, construction of sewage lines and sewage disposal plant, a WPA (Work Projects Administration) national… https://www.rawpixel.com/image/12149588/image-plant-hand-personFree Image from public domain licenseGrant County, Oregon. Bureau of Mines representative taking bearing on angle of diamond drilling for chrome ore deposits by… https://www.rawpixel.com/image/12152192/image-plant-person-artFree Image from public domain license[Untitled photo, possibly related to: Emil Alto, once a saloon keeper in the former prosperous mining town of Mansfield… https://www.rawpixel.com/image/12148305/image-face-plant-personFree Image from public domain license[Untitled photo, possibly related to: Change of shift, coal mine, Maidsville, West Virginia]. Sourced from the Library of… https://www.rawpixel.com/image/12319669/image-person-headphones-public-domainFree Image from public domain licenseProduction. Copper. Bulldozer operator at open-cut copper mine of the Phelps-Dodge Mining Company at Morenci, Arizona… https://www.rawpixel.com/image/12308865/image-face-hand-personFree Image from public domain licenseNew Idria, California. Collecting mercury by hand from soot deposited in the condenser chamber at the mercury extraction… https://www.rawpixel.com/image/12339015/image-plant-hand-personFree Image from public domain license[Untitled photo, possibly related to: Workers in limestone quarry. Tygart Valley Homesteads, West Virginia]. Sourced from… https://www.rawpixel.com/image/12335837/image-person-public-domain-manFree Image from public domain license[Untitled photo, possibly related to: Bingham Canyon, Utah. Drilling blast holes with a rock-drill machine in an open-pit… https://www.rawpixel.com/image/12337659/image-person-public-domain-manFree Image from public domain license[Untitled photo, possibly related to: Construction worker, Shasta Dam, Shasta County, California] by Russell Lee https://www.rawpixel.com/image/12172996/image-person-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Bingham Canyon, Utah. Building a trestle bridge at the open-pit mine workings of the… https://www.rawpixel.com/image/12337643/image-person-technology-public-domainFree Image from public domain licenseBingham Canyon, Utah. Building a trestle bridge at the open-pit mine workings of the Utah Copper Company. Sourced from the… https://www.rawpixel.com/image/12337851/image-person-technology-public-domainFree Image from public domain licenseWorkman cutting a steel beam with an acetylane torch near mine tipple and engine house. Scotts Run, West Virginia. Sourced… https://www.rawpixel.com/image/12320503/image-person-public-domain-houseFree Image from public domain licenseBingham Canyon, Utah. Building a trestle bridge at the open-pit mines of the Utah Copper Company. Sourced from the Library… https://www.rawpixel.com/image/12337646/image-person-sky-technologyFree Image from public domain licenseBingham Canyon, Utah. Building a trestle bridge at the open-pit mines of the Utah Copper Company. Sourced from the Library… https://www.rawpixel.com/image/12337655/image-person-technology-public-domainFree Image from public domain license[Untitled photo, possibly related to: New Idria, California. A view of the mercury extraction plant of the Quicksilver… https://www.rawpixel.com/image/12339082/image-plant-person-public-domainFree Image from public domain licenseMiners drawing drinking water at Old Ben No. 8 mine, West Frankfort, Illinois. Sourced from the Library of Congress. https://www.rawpixel.com/image/12315346/image-person-smoke-public-domainFree Image from public domain licenseGold miner looking at his watch before going down in the mine for work, Mogollon, New Mexico by Russell Lee https://www.rawpixel.com/image/12173154/image-face-person-artFree Image from public domain license[Untitled photo, possibly related to: Moving ore car on narrow gage railroad track at gold mine, Mogollon, New Mexico] by… https://www.rawpixel.com/image/12171064/image-person-art-vintageFree Image from public domain licenseElectric power shovels scoop up iron ore; eight cubic yards per shovelful. Albany Mine near Bovey, Minnesota. Sourced from… https://www.rawpixel.com/image/12285029/photo-image-person-sky-public-domainFree Image from public domain license