
7.5
How Do They Do It?
2006
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Season 1 · Episode 1 — Grand Coulee DamThe world’s largest concrete dam–and the largest concrete structure in the world–lies on the Columbia River in the State of Washington. B uilt in 1931, it is also one of the largest hydroelectric power plants in the world.
Up nextThe Empire State BuildingS1 · E2 · 44 min
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