NTSB approves report saying 2010 Mich. oil spill likely caused by company's n

[USFREEDOM911]

The Canadian operator of an oil pipeline that ruptured in southwestern Michigan two years ago, causing the most expensive onshore spill in U.S. history, failed to deal adequately with structural problems detected years ago and to respond appropriately to the catastrophe, the National Transportation Safety Board said Tuesday.

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