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Trans Alaska oil pipeline is buried whenever possible, but permafrost soil conditions require the pipeline to be above ground. Metal fins help dissipate heat and cold.

Alaska Pipeline

Trans Alaska oil pipeline is buried whenever possible, but permafrost soil conditions require the pipeline to be above ground. Metal fins help dissipate heat and cold.

Photo ID#: 17-33928.jpg
Photographer: Patrick J Endres
Model Release: No
Restrictions:
None
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