We checked out the Alaskan Pipe line, and have learned quite a bit about the difficulties of engineering roads and pipelines over the permafrost of the tundra an arctic. The oil coming out of the earth is so warm (183 degree F) it can actually melt the permafrost ground the pipeline travels over, creating all kinds of issues.
Ask David about the pipeline "boots, and pigs and radiators." He found all this fascinating, the girls a little less so. But hey, it was a good occasion to wear their new boots and sweaters!
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