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CIRCA 1930s - Production of concrete for the Boulder Dam
CIRCA 1940s - Unloaders are used with a vessel at a docking facility and steelworkers take samples of iron ore from a storage pile.
CIRCA 1950s - The USS Forrestal's hull is completed in 1955.
CIRCA 1942 - Men work in factories and on construction sites in Mexico City.
1950s - Steel construction in Mexico and their pride in their history
CIRCA 1940s A serviceman directs traffic, and servicemen build various structures.
1920s - Iron ore is brought to the foundry by ships. Good shots of a foundry.

4288517

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1064380270
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ஸ்டாக் வீடியோ ID: 1064380270

CIRCA 1940s - Sand is combined in a uniform mixture to create the concrete for the construction of the Hoover Dam, and is transported by railroad car.

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