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- Tesoro Corporation
Tesoro Corporation
Tesoro Corporation, a Fortune 150 company, is an independent refiner and marketer of petroleum products. Through our subsidiaries, we operate seven refineries in the western US with a combined capacity of approximately 665,000 barrels per day. Tesoro’s retail-marketing system includes 1,215 branded retail stations of which 425 are company operated under the Tesoro, Shell, and USA Gasoline ™ brands.