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American Experience | The Alaska Pipeline's Permafrost Challenge | PBS

Duration: 00:37
Program: American Experience
Broadcast Date: May. 16, 2006

The oilmen planned to build the Alaska pipeline the same way they'd built every other pipeline in the world -- dig a ditch and bury it. This would not work in the arctic. Beneath a thin, insulating cover of tundra and vegetation, much of Alaska sits on permanently frozen ground called permafrost. In some places, it's mostly gravel, but in others it's mostly ice.

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Post Date: October 2, 2013