When looking at something as massive as a space shuttle or ocean liner, it can be hard to fathom that they came into being thanks to the work of many, comparatively small, human hands.
Keep scrolling to see some gargantuan machines made throughout history with the relatively tiny people who helped to build them.
Tyne and Wear Archives and Museums
RMS Mauretania in Canada Dock in Liverpool, England, 1909 (reference number DS.WS/143/68).
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A large boiler being loaded onto a ship for export at the Harland and Wolff shipyard, Belfast, circa 1910.
The boilers of the White Star liner Olympic, the largest vessel in the world at the time. It was launched on Oct. 20, 1910. The Olympic underwent a refitting in October 1912 to add more lifeboats onboard and extended the height of its watertight bulkheads after the devastating sinking of its sister ship Titanic months earlier. (You can spot someone toward the back of the photo.)
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A giant condenser is hoisted up to its position on board the Cunard liner Aquitania during its construction at the John Brown & Company shipyard, Clydebank circa 1912.
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Men at work on the propellers of the merchant ship Mauretania during her refitting in the dry dock at Cherbourg, France, in May 1924.
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Production of a giant steel volute case for a turbine circa 1930.
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The cap of one of the four propellers shipped from London to a shipyard in Scotland for the new Cunarder 534. The vessel had stood untouched for 27 months during construction because Cunard had financial problems and it became a symbol of the depression.
The British government eventually loaned Cunard the money to complete the project and 400 dockers were serenaded back to work by a pipe band on Aug. 4, 1934.
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The launch of the Empire Star at a shipyard in Belfast on Sep. 26, 1935. The ship was lost in 1942 while carrying WWII ammunition and aircraft. Torpedoes from a German submarine sunk the vessel.
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Part of the huge rotor for the waterwheel generator to be used in the Tennessee Valley Water Works' Pickwick Landing Dam in the Tennessee River in Hardin County, Tennessee, circa 1935.
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Workers in a factory operate a row of huge mechanical presses circa 1935.
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Crowds gather around the Hindenburg dirigible in a Lakehurst, New Jersey, hangar on May 10, 1936.
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This giant shovel excavator at the iron mine of Stewart & Lloyd was, in 1934, the largest in Europe, able to scoop 15 tons at once.
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The fireman of this locomotive — one of the largest in use by the Pennsylvania Railroad— was killed and the huge engine was left in this precarious position after a freight train jumped a switch near McKees Rocks, Pennsylvania, on June 5, 1944.
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A team of painters at work on the hull of the ship Queen Mary circa 1951.
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Mining the "world's largest sandbox" in the Athabasca tar sands is a job for big machines; like this 150-ton truck in Alberta, Canada, in 1968.
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The giant autoclave at the North American Rockwell's Tulsa division in Oklahoma in June 1969. It was used in the manufacture of Apollo space hardware.
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The picture shows the Marine Running Tunnel (South) Boring Machine working its way toward France during the construction of the Channel Tunnel in Sep. 1990.
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Deactivation of nuclear missiles in Russia circa 1995.
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Children stand in the wheel wells of Bigfoot 5, Ford's monster truck, on June 13, 2003. The monster truck was the world's largest
as of 1986, and its tires measure 10 feet high.
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Workers walk toward a huge coal excavator at Maritsa Iztok, the largest coal mine in Bulgaria. Many large excavators, up to 70 m high, work day and night to supply the coal that provides 85 percent of the country's energy in September 2008.
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Ralph Saunders, a shovel mechanic, left, and Justin Mortimeyer perform a safety inspection on a Hitachi excavator at the Cripple Creek and Victor gold mine in Victor/Cripple Creek, Colorado on Nov. 5, 2009.
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Space shuttle Discovery rolls to the launch pad after emerging from NASA's vehicle assembly building atop a crawler transporter at Kennedy Space Center in Cape Canaveral, Florida on Jan. 31, 2011.
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Brown coal/lignite being extracted by huge bucket-wheel excavators at open-pit mine, Saxony-Anhalt, Germany on March 24, 2012.
A crew member operating a BelAZ 75710 truck of the Chernigovets coal company, outside the town of Beryozovsky, Kemerovo region, Siberia, Russia in April 2016.
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Indian Central Industrial Security Force and airport personnel stand near the heaviest airplane ever built, the Antonov AN-225 Mriya, at Rajiv Gandhi International airport in Hyderabad on May 13, 2016. The aircraft was initially built in 1988 to transport the Buran, a Soviet spaceplane.
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A person works on a large anti-submarine ship docked at the Dalzavod Ship Repair Centre in Vladivostok, Russia, on Jan. 27, 2017.
Jake Chopin, from the International Union of Operating Engineers Local 302, pumps his arm in the air at the conclusion of a Seattle, Washington, tunnel drilling by Bertha
, the world's largest tunnel-boring machine, in April 2017.