$5.1 billion Frontier Oil has named Nancy Zupan as chief accounting officer, effective Jan. 1. Zupan, who has been with Frontier since 1977, most recently served as vice president and controller.

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Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...