Tesoro Corp.

A Washington state administrative judge threw out $2.4 million in fines levied against refiner Tesoro Corp for a 2010 explosion that claimed the lives of seven workers at the company's Anacortes, Washington, refinery. more

Health, Safety & Environmental

Tesoro Logistics LP announced it has agreed to acquire crude oil, natural gas and produced water gathering systems and two natural gas processing facilities for total consideration of $700 million. more


Oil refiner Tesoro Corp. agreed to buy Western Refining Inc. for about $4.1 billion, creating a company that will account for about 6 percent of U.S. crude-processing capacity. more


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