Butte, Montana. Anaconda Copper Mining Company. The town is dominated by headframes of various copper mines by Russell Lee https://www.rawpixel.com/image/12148570/image-art-sky-vintageFree Image from public domain license[Untitled photo, possibly related to: Boeing aircraft plant, Seattle, Washington. Production of B-17 (Flying Fortress)… https://www.rawpixel.com/image/12295496/photo-image-background-plant-patternFree Image from public domain licenseThis is the only toilet in a two-family house in New Brighton, Pennsylvania. Sourced from the Library of Congress. https://www.rawpixel.com/image/12278949/photo-image-public-domain-family-houseFree Image from public domain license[Untitled photo, possibly related to: Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power… https://www.rawpixel.com/image/12297902/photo-image-person-technology-public-domainFree Image from public domain license[Untitled photo, possibly related to: General Motors plant. Trenton, New Jersey]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12286519/photo-image-plant-pattern-skyFree Image from public domain licenseGrunge brown cement textured background https://www.rawpixel.com/image/593647/textured-concrete-wallView licenseConstruction work on Mellon Art Gallery. Washington, D.C.. Sourced from the Library of Congress. https://www.rawpixel.com/image/12283714/photo-image-person-art-skyFree Image from public domain license[Untitled photo, possibly related to: Rock crusher at quarry. Tygart Valley, West Virginia]. Sourced from the Library of… https://www.rawpixel.com/image/12247893/photo-image-plant-sky-treeFree Image from public domain licensePower transformers. Southeast section of Washington, D.C.. Sourced from the Library of Congress. https://www.rawpixel.com/image/12269604/photo-image-cloud-person-skyFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Metal casings for concrete piles that will… https://www.rawpixel.com/image/12298078/photo-image-plant-person-skyFree Image from public domain licenseNetwork security system perforated paper padlock https://www.rawpixel.com/image/92312/free-photo-image-accessibility-art-and-craftView licenseLas Vegas, Nevada. A rear view of some of the structures of the Basic Magnesium Incorporated plant, showing at the far right… https://www.rawpixel.com/image/12297894/photo-image-shadow-plant-skyFree Image from public domain licenseNetwork security system perforated paper padlock https://www.rawpixel.com/image/92308/free-photo-image-security-accessibility-artView license[Untitled photo, possibly related to: Crampton canneries in Plain City, Ohio]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12255877/photo-image-public-domain-factory-natureFree Image from public domain license[Untitled photo, possibly related to: General Motors plant. Trenton, New Jersey]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12285129/photo-image-plant-person-patternFree Image from public domain licenseSunny light in the morning with iron bars https://www.rawpixel.com/image/90909/free-photo-image-abstract-ancient-antiqueView licenseBethlehem-Fairfield shipyards, Baltimore, Maryland. The stem of a vessel just after the launching ceremony. Sourced from the… https://www.rawpixel.com/image/12292784/photo-image-person-sky-public-domainFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Steel and concrete go into place rapidly as a… https://www.rawpixel.com/image/12297786/photo-image-plant-person-skyFree Image from public domain licenseMorning sunny day watering houseplant at home https://www.rawpixel.com/image/90893/free-photo-image-sun-abstract-ancientView licenseSunny light in the morning with iron bars https://www.rawpixel.com/image/90885/free-photo-image-abstract-ancient-antiqueView licenseEmpty metal seats in a cafe https://www.rawpixel.com/image/22615/free-photo-image-background-bar-brickView licenseLas Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium… https://www.rawpixel.com/image/12297907/photo-image-person-sky-technologyFree Image from public domain licenseChandelier light art design abstract https://www.rawpixel.com/image/90861/free-photo-image-abstract-architecture-artView 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 licenseCleveland, Ohio. Unloading iron ore from a lake freighter by means of Hewlett [i.e., Hulett] unloaders at the Pennsylvania… https://www.rawpixel.com/image/12294158/photo-image-sky-technology-public-domainFree Image from public domain licenseLas Vegas, Nevada. A mass of transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium… https://www.rawpixel.com/image/12297613/photo-image-person-sky-technologyFree Image from public domain licenseFishing nets drying in the summer sun at the harbor https://www.rawpixel.com/image/2451607/free-photo-image-background-black-boatView licenseEmpty metal seats in a cafe https://www.rawpixel.com/image/22531/free-photo-image-background-bar-brickView license[Untitled photo, possibly related to: New Idria, California. Aerial tramway which carries cinnabar ore from mines to the New… https://www.rawpixel.com/image/12297331/photo-image-plant-person-skyFree Image from public domain licenseGeneral Motors plant. Trenton, New Jersey. Sourced from the Library of Congress. https://www.rawpixel.com/image/12285259/photo-image-plant-pattern-skyFree Image from public domain licenseEmpty metal seats in a cafe https://www.rawpixel.com/image/22507/free-photo-image-background-bar-brickView licenseNew York, New York. Italian-American watching parade on Mott Street and flag raising ceremony in honor of boys from the… https://www.rawpixel.com/image/12288569/photo-image-person-public-domain-houseFree 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 license[Untitled photo, possibly related to: Las Vegas, Nevada. A mass of transmission towers and transformers redistributing power… https://www.rawpixel.com/image/12298154/photo-image-sky-technology-public-domainFree Image from public domain licenseCuban Revolutionary Society, Key West, Florida. Sourced from the Library of Congress. https://www.rawpixel.com/image/12253291/photo-image-person-public-domain-windowFree Image from public domain license[Untitled photo, possibly related to: Charlotte Amalie, St. Thomas Island, Virgin Islands. An inmate of the insane asylum at… https://www.rawpixel.com/image/12263341/photo-image-person-public-domain-womanFree 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 licenseLas Vegas, Nevada. Transmission towers and transformers redistributing power from Boulder Dam to Basic Magnesium… https://www.rawpixel.com/image/12297608/photo-image-person-sky-technologyFree Image from public domain licenseBethlehem-Fairfield shipyards, Baltimore, Maryland. The stem of a vessel just after the launching ceremony. Sourced from the… https://www.rawpixel.com/image/12293959/photo-image-person-public-domain-manFree Image from public domain licenseType of drop gate for loading of cotton seed hulls onto trucks. Cotton seed oil mill. McLennan County, Texas by Russell Lee https://www.rawpixel.com/image/12148407/image-art-pattern-vintageFree Image from public domain licenseSibley, Missouri. Crossing the Missouri River along the route of the Atchison, Topeka, and Santa Fe Railroad between… https://www.rawpixel.com/image/12291468/photo-image-sky-public-domain-archFree Image from public domain licenseWest Mine, West Frankfort, Illinois. Now abandoned. This mine has been down about a year (see 26940-D). Sourced from the… https://www.rawpixel.com/image/12272613/photo-image-person-sky-smokeFree Image from public domain license