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Rotaries — Avalanche on the Mountain (19x5)

Data di messa in onda: Apr 08, 2014

Explore a story of survival when men and machines vied with the mountains and the elements. When a winter storm shut down the west-east railroad route across America, a vision from the past—the rotary snow plow invented in the 1800s—helped rescue a trapped train crew and re-open this major rail line.