1940s - Aerial views of land excavated for a Tennessee Valley Authority dam, and a cofferdam already well under construction.
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1940s - Rollers and bulldozers are used to raze land for a Tennessee Valley Authority dam site, and its proper density is checked.
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1940s - Sheet steel piling is used to begin construction on a Tennessee Valley Authority dam.
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1940s - Construction is underway on a cofferdam in Kentucky.
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1950s - A hydroelectric dam powers machines across several industries.
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1940s - The Tennessee Valley Authority's water control system in Kentucky is explained.
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1940s - Land is bulldozed to make space for a new Tennessee Valley Authority dam.
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TENNESSEE - 1942 - Tilt up the Douglas Dam construction site where cranes and dump trucks are being used.
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1942 - Indian soldiers patrol a dam in Tando Masti Khan.
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NORTH CAROLINA - 1938 - A man wearing headphones and holding a microphone watch as a concrete mixer is being lowered into the construction site.
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CANADA - 1942 - Canadians operate hydroelectric dams for power in Quebec and others trek into the wintry north of Canada to find alternative options.
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1940s - Highways and highway bridges must be relocated to make space for a Tennessee Valley Authority dam in Kentucky.
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1940s - Concrete is deposited at a Tennessee Valley Authority dam construction site in Kentucky.
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1913 - View from a boat approaching the locks on the Panama Canal.
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NORTH CAROLINA - 1938 - Men hold the concrete mixer steady as it dispenses liquid concrete into the rebar steel mesh at the construction site.
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NORTH CAROLINA - 1938 - A group of women enters a house with an enclosed deck and a man takes his pet dog for a walk in the forest.
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NORTH CAROLINA - 1938 - The heavy crane moves across Hiwassee River by a cable line, unloading a pile of earth in front of workers with spades.
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INDIA - 1960s - Laborers including children are given drinking water and food at the top of the Nagarjuna Sagar Dam on the Krishna River in India.
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NORTH CAROLINA - 1938 - Heavy cranes unload piles of earth in front of workers. The workers begin to flatten the earth with their spades and tools.
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TENNESSEE - 1942 - Panorama of the French Broad River, where the Douglas Dam is being constructed.
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1914 - The freighter City of Lordsburg enters the Panama Canal.
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1940s - A scenic dam in Greece.
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USA - 1950s - Men work on a construction site for a reservoir in the American west.
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1913 - A set of stairs are lowered from a bridge into the Panama Canal.
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1949 - With Marshall Plan dollars and NATO's protection, European countries begin rebuilding (narrated in 1965).
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1940s - Construction workers receive and drill new concrete at a Tennessee Valley Authority dam site.
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1940s - Trees and marshland are cleared for a Tennessee Valley Authority reservoir in Kentucky.
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TENNESSEE - 1942 - Men put up a telephone pole at the Douglas Dam construction site.
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NORTH CAROLINA - 1938 - The heavy machinery is transported across the Hiwassee River by a cable line to another mountain.
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1940s - People walk along a dam in Greece.
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NORTH CAROLINA - 1938 - A crane hoists heavy machinery while a man operates a locomotive. The train pulls carts of earth along the tracks.
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1940s - Aggregate is cleaned and put on a conveyor belt at a Tennessee Valley Authority site.
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NORTH CAROLINA - 1938 - A man knocks on the front door of a wooden house before meeting another man. A child plays with rocks in the backyard.
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1940s - A map outlines the flow of a river that will run through a Tennessee Valley Authority Kentucky dam.
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TENNESSEE - 1942 - A mechanical shovel is used to move giant rocks at the Douglas Dam construction site.
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1940s - Tennessee Valley Authority dump trucks, power shovels and bulldozers are used at a construction site for a cofferdam in Kentucky.
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ONTARIO - 1945 - Men from Canada's Department of Indian Affairs set traps for beavers on an Ontario preserve in order to relocate them.
Aerial view of the water reflecting light near the dam's grey concrete and green metal structure in King's Lynn, England, United Kingdom.
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Aerial view of Silvan Reservoir Park intake tower, Australia.
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1940s - A railroad bridge is relocated upriver to allocate space for a Tennessee Valley Authority reservoir in Kentucky.
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1940s - Aggregate collected at a limestone quarry is put into a crusher and then a reclaiming tunnel.
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1940s - Construction on a Tennessee Valley Authority reservoir powerhouse is begun in Kentucky.
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1940s - Concrete aggregate is mixed by machine and sorted on a conveyor belt, before being put into large containers at a Tennessee Valley Authority construction site.
TENNESSEE - 1940s - Cars drive by the Chickamauga Dam in Tennessee.
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1940s - Aggregate is transported from a quarry to a Tennessee Valley Authority dam site by railway.
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1940s - Exteriors of a logging facility on a reservoir.
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TENNESSEE - 1942 - Men work on a water tower at the Douglas Dam construction site.
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1940s - Soil is dredged and screened on a Tennessee Valley Authority barge on the Tennessee River.