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March 7, 2007
ANCHORAGE, Alaska (AP) — The operator of the trans-Alaska oil pipeline launched an intensive inspection of the line Monday with a tool known as a smart pig.
The device put into the line uses powerful magnets to check for anomalies such as corrosion. It's a concept similar to magnetic resonance imaging equipment used on humans, said Mike Heatwole, a spokesman for Alyeska Pipeline Service Co., operator of the 800-mile pipeline.
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