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9. Archer Daniels Midland

CEO: Patricia Woertz
Company value: $28 billion

Patricia Woertz has been CEO and president of Archer Daniels Midland since 2006. A year later, she also became chairman of the board of ADM, the processor and producer of food ingredients, feed ingredients and biofuels. Woertz also serves on the boards of Procter & Gamble, the U.S. China Business Council and the President's Export Council.

adm.comInset: Andrew Harrer | Bloomberg | Getty Images