[Untitled photo, possibly related to: Large tanks used for mixing powdered gold ore with cyanide solution to extract gold… https://www.rawpixel.com/image/12173167/image-art-vintage-goldFree Image from public domain license[Untitled photo, possibly related to: Iron furnace in Jackson, Ohio]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12252479/photo-image-person-sky-treeFree Image from public domain licenseLoading iron ore into hold of boat. First mate directing operations. Allouez, Wisconsin. Sourced from the Library of… https://www.rawpixel.com/image/12286416/photo-image-person-smoke-public-domainFree Image from public domain license[Untitled photo, possibly related to: Furniture factory, Arthurdale, West Virginia]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12255640/photo-image-person-public-domain-factoryFree Image from public domain licenseDimension lumber plant at Tygart Valley Homesteads, West Virginia. They cut wood to size as ordered by furniture companies.… https://www.rawpixel.com/image/12282762/photo-image-plant-person-woodFree Image from public domain licenseHoney Brook, Pennsylvania (vicinity). Amish farmhand dipping harness in oil on the Zook farm. Sourced from the Library of… https://www.rawpixel.com/image/12288201/photo-image-person-public-domain-factoryFree Image from public domain licenseColumbia Steel Company at Ironton, Utah. Tapping a heat of iron in the cast house of the blast furnace. Sourced from the… https://www.rawpixel.com/image/12297595/photo-image-person-light-public-domainFree Image from public domain licenseChicago, Illinois. Getting water for an engine at a Chicago and Northwestern coaling station. Sourced from the Library of… https://www.rawpixel.com/image/12301202/image-person-sky-smokeFree Image from public domain license[Untitled photo, possibly related to: At concentration plant iron ore is first dumped onto these shams which help separate… https://www.rawpixel.com/image/12286309/photo-image-plant-person-roadFree Image from public domain licenseLoading lake boat with iron ore. Allouez, Wisconsin. Sourced from the Library of Congress. https://www.rawpixel.com/image/12284855/photo-image-person-smoke-public-domainFree Image from public domain licenseFurniture factory, Arthurdale, West Virginia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12237509/image-person-technology-factoryFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Ironton, Utah. Pouring a heat of iron]. Sourced from the… https://www.rawpixel.com/image/12298033/photo-image-person-smoke-public-domainFree Image from public domain licenseNew type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into… https://www.rawpixel.com/image/12277615/photo-image-person-technology-public-domainFree Image from public domain licenseGears and all machinery in a cotton seed oil mill are covered with a fine dust. Cotton seed oil mill. McLennan County, Texas… https://www.rawpixel.com/image/12147301/image-person-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Cleveland, Ohio. Unloading iron ore from a lake freighter by means of Hewlett [i.e.… https://www.rawpixel.com/image/12293838/photo-image-person-sky-public-domainFree Image from public domain licenseMachinery and other property of Buckboard Charlie. Iron River, Michigan by Russell Lee https://www.rawpixel.com/image/12148550/image-person-art-vintageFree Image from public domain license