[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 licenseInterior of mine on farm of William Giles. Union Township, Pennsylvania. Sourced from the Library of Congress. https://www.rawpixel.com/image/12326090/image-person-wood-public-domainFree Image from public domain licenseTunnel on the Hudson River Railroad, Between Garrison's and Cold Spring. by New York Stereoscopic Company https://www.rawpixel.com/image/14296345/photo-image-book-art-public-domainFree Image from public domain licenseCanton du Tessin. Vallee de la Levantine; galeries au defile de Stalvedro. by Adolphe Braun https://www.rawpixel.com/image/14289301/photo-image-art-public-domain-paintingFree Image from public domain licenseBlacksmith Shop, &c., East End. [Hoosac Tunnel Route] by Hurd and Smith https://www.rawpixel.com/image/14292129/blacksmith-shop-andc-east-end-hoosac-tunnel-route-hurd-and-smithFree Image from public domain licenseInterior of the Snow Sheds on the C.P.R.R. [Pacific Railroad] by Edward and Henry T Anthony and Co https://www.rawpixel.com/image/14287347/photo-image-public-domain-interior-buildingFree Image from public domain licenseThe Niagara Suspension Bridge. Interior View. by William England https://www.rawpixel.com/image/14288799/the-niagara-suspension-bridge-interior-view-william-englandFree Image from public domain licenseInterior View of Snow Sheds. [Pacific R.R.] by Edward and Henry T Anthony and Co https://www.rawpixel.com/image/14287869/photo-image-public-domain-interior-buildingFree Image from public domain licenseFrame of Snow Covering, 90 miles from Sacramento by Alfred A Hart and Carleton Watkins https://www.rawpixel.com/image/14299605/photo-image-frame-public-domain-natureFree Image from public domain licensePresident Joe Biden delivers remarks on infrastructure investments in the Hudson River Tunnel Project, Tuesday, January 31… https://www.rawpixel.com/image/11072586/photo-image-face-person-public-domainFree Image from public domain licenseGotthardbahn: Bahngebiet bei Goldau by Adolphe Braun and Cie https://www.rawpixel.com/image/14314649/gotthardbahn-bahngebiet-bei-goldau-adolphe-braun-and-cieFree Image from public domain licenseConstruction of the New York Subway (1908) by Grant W Pullis https://www.rawpixel.com/image/13755930/construction-the-new-york-subway-1908-grant-pullisFree Image from public domain licenseGotthardbahn: Obere Mayenreussbrücke mit Leggistein-Tunnelausgang by Adolphe Braun and Cie https://www.rawpixel.com/image/14314749/image-public-domain-photo-franceFree Image from public domain licenseTrains of ore containing copper arriving at one of the large refining plants of the Utah Copper Company. Sourced from the… https://www.rawpixel.com/image/12338150/image-plants-public-domain-architectureFree Image from public domain licenseBaltimore & O.R.R. Scenery - Harpers Ferry by William M Chase https://www.rawpixel.com/image/14290944/baltimore-orr-scenery-harpers-ferry-william-chaseFree Image from public domain licenseWest End of Shawangunk Tunnel. [New York and Oswego Midland Railroad.] by Edward and Henry T Anthony and Co https://www.rawpixel.com/image/14287366/photo-image-art-animal-public-domainFree Image from public domain licenseGreat Western Railway next to the River Avon at Fox's Wood, Bristol. Tinted lithograph by J.C. Bourne, 1846. https://www.rawpixel.com/image/13997191/image-paper-plant-personFree Image from public domain licenseMadura. Permaul Pagoda, Bimanum from Corner of Court. by Capt Linnaeus Tripe https://www.rawpixel.com/image/14322757/madura-permaul-pagoda-bimanum-from-corner-court-capt-linnaeus-tripeFree Image from public domain licenseInterior of the Snow Sheds on the Central Pacific Railroad. by Francis Hendricks https://www.rawpixel.com/image/14292741/photo-image-art-public-domain-paintingFree Image from public domain licenseA London Underground 2009 tube stock Victoria line train calls at Highbury and Islington station. https://www.rawpixel.com/image/6077256/photo-image-public-domain-person-londonFree Image from public domain licenseKuilenburgse spoorbrug over de Lek (1868 - 1885) by Pieter Oosterhuis https://www.rawpixel.com/image/13756536/kuilenburgse-spoorbrug-over-lek-1868-1885-pieter-oosterhuisFree Image from public domain licenseStoking furnace at gopher hole, Williamson County, Illinois. Sourced from the Library of Congress. https://www.rawpixel.com/image/12315256/image-person-road-public-domainFree Image from public domain licenseA railway viaduct over the sea between Dover and Folkestone forming the entrance to a tunnel under the English Channel.… https://www.rawpixel.com/image/13984657/image-paper-cartoon-artFree 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 licenseCapels, West Virginia, with coal mine tipple in foreground. Sourced from the Library of Congress. https://www.rawpixel.com/image/12324551/image-plant-person-skyFree 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 licenseColumbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new steel plant which will make important… https://www.rawpixel.com/image/12298077/photo-image-plant-person-skyFree Image from public domain license[Untitled photo, possibly related to: Yampai, Arizona. Brakeman and the conductor inspecting the train during a stop on the… https://www.rawpixel.com/image/12292889/photo-image-person-sky-public-domainFree Image from public domain licenseChicago, Illinois. A Baltimore and Ohio Railroad train about to depart from the Union Station via the Alton Road to Saint… https://www.rawpixel.com/image/12290723/photo-image-light-road-public-domainFree Image from public domain licenseWilliams (vicinity), Arizona. A train on the Atchison, Topeka and Santa Fe Railroad between Winslow and Seligman, Arizona… https://www.rawpixel.com/image/12292645/photo-image-plant-sky-forestFree Image from public domain licenseChicago, Illinois. The turntable at the roundhouse at an Illinois Central Railroad yard. Sourced from the Library of… https://www.rawpixel.com/image/12290827/photo-image-public-domain-arch-architectureFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new… https://www.rawpixel.com/image/12297789/photo-image-plant-sky-mountainFree Image from public domain licenseVintage tunnel illustration https://www.rawpixel.com/image/451704/premium-illustration-vector-vintage-workers-air-flue-antiqueView license[Untitled photo, possibly related to: Williams (vicinity), Arizona. A train on the Atchison, Topeka and Santa Fe Railroad… https://www.rawpixel.com/image/12292644/photo-image-plant-person-skyFree Image from public domain 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 license[Untitled photo, possibly related to: Freight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and… https://www.rawpixel.com/image/12291362/photo-image-sky-public-domain-natureFree Image from public domain licenseWilliam Giles and two helpers at his mine working on his farm in Union Township, Pennsylvania. Sourced from the Library of… https://www.rawpixel.com/image/12276347/photo-image-plant-person-forestFree Image from public domain licenseColumbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new steel plant which will make important… https://www.rawpixel.com/image/12297944/photo-image-plant-person-public-domainFree Image from public domain licenseSnow shed over Union Pacific tracks. Carbon County, Wyoming. Sourced from the Library of Congress. https://www.rawpixel.com/image/12275858/photo-image-sky-public-domain-architectureFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new… https://www.rawpixel.com/image/12297772/photo-image-plant-sky-mountainFree 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 licenseVintage tunnel illustration https://www.rawpixel.com/image/451707/premium-illustration-vector-vintage-car-air-flue-antiqueView license[Untitled photo, possibly related to: Creede, Colorado. Lead and silver mining in a former "ghost town"]. Sourced from the… https://www.rawpixel.com/image/12297265/photo-image-person-road-public-domainFree Image from public domain license[Untitled photo, possibly related to: Galesburg, Illinois. A train stopping for water and coal along the Atchison, Topeka… https://www.rawpixel.com/image/12290147/photo-image-person-sky-lightFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new… https://www.rawpixel.com/image/12297766/photo-image-plant-person-public-domainFree Image from public domain licenseBelva, Oklahoma. Helper engine coming to help push the train on the Atchison, Topeka, and Santa Fe Railroad as far as… https://www.rawpixel.com/image/12291228/photo-image-sky-smoke-technologyFree Image from public domain license[Untitled photo, possibly related to: Chicago, Illinois. A Baltimore and Ohio Railroad train about to depart from the Union… https://www.rawpixel.com/image/12290971/photo-image-light-road-public-domainFree Image from public domain license[Untitled photo, possibly related to: Columbia Steel Company at Geneva, Utah. Constructing a water intake tunnel for a new… https://www.rawpixel.com/image/12298085/photo-image-plant-person-public-domainFree Image from public domain licenseBethlehem-Fairfield shipyards, Baltimore, Maryland. Assembled sections in a fabricating shop. Sourced from the Library of… https://www.rawpixel.com/image/12293144/photo-image-sky-public-domain-archFree Image from public domain licenseRoute of the Iranian state railway train (right) heads into a tunnel. Notice the several tunnel entrances shown in this… https://www.rawpixel.com/image/12294399/photo-image-person-road-public-domainFree Image from public domain licenseChicago, Illinois. Engines lined up at coaling station at an Illinois Central Railroad yard. Sourced from the Library of… https://www.rawpixel.com/image/12290821/photo-image-person-public-domain-architectureFree 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 licenseSummit (vicinity), California. Going down the mountains on the Atchison, Topeka, and Santa Fe Railroad between Barstow and… https://www.rawpixel.com/image/12293808/photo-image-sky-mountain-public-domainFree Image from public domain licenseYampai (vicinity), Arizona. Going through a small tunnel on the Atchison, Topeka, and Santa Fe Railroad between Seligman… https://www.rawpixel.com/image/12292661/photo-image-sky-light-public-domainFree Image from public domain licenseAbo, New Mexico. Going through the town on the Atchison, Topeka and Santa Fe Railroad between Vaughn and Belen, New Mexico.… https://www.rawpixel.com/image/12292548/photo-image-cloud-person-skyFree Image from public domain license[Untitled photo, possibly related to: Chicago, Illinois. The turntable at the roundhouse at an Illinois Central Railroad… https://www.rawpixel.com/image/12290870/photo-image-public-domain-arch-architectureFree Image from public domain license[Untitled photo, possibly related to: Baring, Missouri. A train stopping for coal and water along the Atchison, Topeka, and… https://www.rawpixel.com/image/12290244/photo-image-sky-road-public-domainFree Image from public domain licenseKansas City, Missouri. Atchison, Topeka, and Santa Fe Railroad tracks, going through Kansas City. Sourced from the Library… https://www.rawpixel.com/image/12291178/photo-image-plant-person-skyFree 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 licenseVintage tunnel illustration https://www.rawpixel.com/image/451709/premium-illustration-vector-train-vintage-air-flue-antiqueView licenseMine workers on the farm of Mr. Bundy, a member of the Tri-County Farmers Co-op Market at Du Bois, Pennsylvania. Mr. Bundy's… https://www.rawpixel.com/image/12276589/photo-image-plant-sky-treeFree Image from public domain licenseQuirk (vicinity), New Mexico. Going through the town along the Atchison, Topeka and Santa Fe Railroad between Belen and… https://www.rawpixel.com/image/12292274/photo-image-cloud-sky-public-domainFree Image from public domain license[Untitled photo, possibly related to: Coal miners going home from work. Omar, West Virginia]. Sourced from the Library of… https://www.rawpixel.com/image/12265476/photo-image-person-public-domain-basketballFree Image from public domain license