Modern Marvels - Grand Coulee Dam

Seizoen: 1 - Aflevering: 1 / 2 - Eerst uitgezonden: 10 december 1993 - Episode ID: 510164

One of the world's largest concrete dams and largest concrete structures lies on the Columbia River in the State of Washington. Built in 1931, the Grand Coulee Dam is also one of the largest hydroelectric power plants. We'll explore this technological wonder.