Search for all of "Colorado River", all of "Standard Oil Co Of California", all of "Hoover Dam ariz And Nev -- Design And Construction"

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Colorado River -- Hoover Dam site View looking down at the Colorado River in Black Canyon, the future site of Hoover Dam. Roads and buildings can be seen on the banks above the river and some construction equipment is visible.
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Hoover Dam construction View of construction of Hoover Dam from the upper portals. Hoisting machinery and an intake tower are visible. The Colorado River in Black Canyon can be seen also.
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Construction -- Hoover Dam Handwritten inscription on back of photo: "Rex motor mixer that has been picked off a white truck and being swung into position at tunnel #1 with load of cement." Shows hoisting machinery, railroad tracks, a steam locomotive, a...
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Hoover Dam construction Shows one of the portals to the diversion tunnels. A portion of the Colorado River is visible as well as construction workers and construction buildings.
 

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