[Untitled photo, possibly related to: Miners changing shift, Birmingham, Alabama]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12313728/image-person-airplane-public-domainFree Image from public domain licenseProduction. Mercury. Loading mercury ore into a mine car by hand at the New Idria, California plant of the New Idria… https://www.rawpixel.com/image/12308596/image-plant-hand-personFree Image from public domain licenseAdkin collection : Untitled (14 January 1949) by Leslie Adkin. https://www.rawpixel.com/image/13029516/adkin-collection-untitled-14-january-1949-leslie-adkinFree Image from public domain licenseRoad to Carlton Tunnel through the Rocky Mountains. Leadville, Colorado. Sourced from the Library of Congress. https://www.rawpixel.com/image/12334987/image-cloud-plant-skyFree Image from public domain licensePulaski Skyway from New York City to New Jersey. Sourced from the Library of Congress. https://www.rawpixel.com/image/12247299/photo-image-shadow-person-roadFree Image from public domain license[Untitled photo, possibly related to: The "trip" coming out of the mines at the end of the day shift. This mine has many… https://www.rawpixel.com/image/12319624/image-plant-person-treeFree Image from public domain licenseVintage tunnel illustration https://www.rawpixel.com/image/451708/premium-illustration-vector-machine-drawings-air-flue-antiqueView licenseVintage civilization illustration https://www.rawpixel.com/image/451706/premium-illustration-vector-vintage-railway-air-flueView licenseVintage tunnel illustration https://www.rawpixel.com/image/451705/premium-illustration-vector-vintage-car-machinery-beach-pneumaticView license[Untitled photo, possibly related to: Roadside scene, Alabama. Approach to Moundville]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12264950/photo-image-plant-person-treeFree Image from public domain license[Untitled photo, possibly related to: Kingman (vicinity), Arizona. A miner going toward a train of mine cars at the entrance… https://www.rawpixel.com/image/12297322/photo-image-plant-person-public-domainFree Image from public domain licenseVintage tunnel illustration https://www.rawpixel.com/image/451704/premium-illustration-vector-vintage-workers-air-flue-antiqueView licenseOne of the traveling towers which connects with the central tower from which material for Shasta Dam is transported. Shasta… https://www.rawpixel.com/image/12149659/image-art-vintage-roadFree Image from public domain licenseNew York, New York. Mrs. Joilet Jones, of twenty-two Morris Park, New York, on her first day on special duty at the Queens… https://www.rawpixel.com/image/12301152/image-person-women-manFree Image from public domain licenseOn board the "Princess Anne" super-deluxe luxury liner ferry plying between Little Creek, Virginia (Norfolk) and Cape… https://www.rawpixel.com/image/12264484/photo-image-person-light-public-domainFree Image from public domain licenseSomewhere on the Persian corridor. A United States Army truck convoy carrying supplies for the aid of Russia on a mountain… https://www.rawpixel.com/image/12294396/photo-image-sky-road-mountainFree Image from public domain licenseShenandoah, Pennsylvania. A car (elevator) at the bottom of a shaft seven hundred feet below the surface at Maple Hill mine.… https://www.rawpixel.com/image/12275526/photo-image-person-wood-public-domainFree Image from public domain licenseSan Bernardino, California. A tunnel at the ice plant through which air is blown on its way to the refrigerator cars.… https://www.rawpixel.com/image/12292323/photo-image-plant-road-public-domainFree Image from public domain licenseFlagstaff, Arizona. Entering the town along the Atchison, Topeka, and Santa Fe Railroad between Winslow and Seligman… https://www.rawpixel.com/image/12292977/photo-image-sky-road-public-domainFree Image from public domain licenseVintage tunnel illustration https://www.rawpixel.com/image/451707/premium-illustration-vector-vintage-car-air-flue-antiqueView licensePittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. Mine car operating off a trolley… https://www.rawpixel.com/image/12289972/photo-image-person-public-domain-manFree Image from public domain licenseUnderpasses mean safety for children at Greenbelt, Maryland. Sourced from the Library of Congress. https://www.rawpixel.com/image/12267809/photo-image-plant-person-treeFree Image from public domain licensePittsburgh, Pennsylvania (vicinity). Montour no. 4 mine of the Pittsburgh Coal Company. Mine car operation off cable in… https://www.rawpixel.com/image/12289998/photo-image-person-technology-public-domainFree Image from public domain licenseA coal mine in southern Iowa. Near Ottumwa, off U.S. Highway No. 34. Sourced from the Library of Congress. https://www.rawpixel.com/image/12267659/photo-image-public-domain-nature-soilFree Image from public domain license[Untitled photo, possibly related to: Workmen from a nearby powder plant at the post office in Childersburg, Alabama].… https://www.rawpixel.com/image/12263027/photo-image-plant-sky-lightFree Image from public domain licensePit car loader, one of the early types of mechanical loaders. Old Ben number eight. West Frankfort, Illnois (see 26980-D).… https://www.rawpixel.com/image/12274197/photo-image-person-public-domain-manFree Image from public domain licenseShenandoah (vicinity), Pennsylvania. A compressed air engine approaching with a train of cars in the Maple Hill mine. The… https://www.rawpixel.com/image/12275710/photo-image-public-domain-hill-architectureFree Image from public domain licenseAbandoned mine. Goldfield, Nevada. Sourced from the Library of Congress. https://www.rawpixel.com/image/12252843/photo-image-sky-public-domain-landscapeFree Image from public domain licenseWilliams, Arizona. On the Atchison, Topeka and Santa Fe Railroad between Winslow and Seligman, Arizona, going around a curve… https://www.rawpixel.com/image/12292946/photo-image-person-sky-mountainsFree Image from public domain licenseVintage tunnel illustration https://www.rawpixel.com/image/451709/premium-illustration-vector-train-vintage-air-flue-antiqueView license