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Alaska Digest

...ground from a 34-inch diameter pipeline in the tundra about 250 miles above the Arctic Circle. The arctic-grade carbon-steel pipe, which leads eventually to the trans-Alaska pipeline, lies above ground but is covered by a layer of gravel...

http://www.juneauempire.com/stories/060906/sta_20060609023.shtml
News
Ex-BP manager invokes Fifth in hearing on spill

...contributed to the Alaska pipeline corrosion. Excrement from the bacteria inside the pipes produces an acid that eats through carbon steel. Marshall acknowledged that the corrosion problem could have been mitigated by more consistent inspection and removal...

http://www.juneauempire.com/stories/090806/sta_20060908035.shtml
News
Prudhoe oil spill took days to discover

...a 34-inch-diameter pipeline situated in the tundra about 250 miles above the Arctic Circle. The arctic-grade carbon-steel pipe, which leads eventually to the trans-Alaska pipeline, lies above ground but is covered by a layer of gravel...

http://www.juneauempire.com/stories/031906/sta_20060319097.shtml
News
State OKs BP oil bypass line

...bacteria from growing in sediment that settles at the bottom of the pipe. Bacteria may have caused the corrosion that led to the leaks in the lines. Excrement from the bacteria inside the pipes produces an acid that eats through carbon steel.

http://www.juneauempire.com/stories/091206/sta_20060912005.shtml
News
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