with a special interest identifying the community benefits and costs of hosting an ethanol refinery. Professor Tigges has also conducted research on Wisconsin manufacturers’ labor utilization strategies and their global competitive position. She teaches courses on gender, work, and local labor markets. She holds a Ph.D. in Sociology from the University of Missouri.


JOHN YUNKER is a program evaluation coordinator for the Minnesota Office of the Legislative Auditor. His evaluation work has covered government programs in many different areas, including education, transportation, economic development, environmental protection, and health care. In recent years, his work has resulted in major reforms in the operation of the Minnesota State Lottery and in the Jobs Opportunity Building Zone (JOBZ) program, the state’s largest economic development program. In April 2009, he authored a report on Minnesota’s biofuel policies and programs, which provided an extensive review of the literature on the energy, environmental, and economic impacts of corn-based ethanol. Over the past 30 years, he has testified extensively to legislative committees in Minnesota and worked with executive branch agencies to implement evaluation recommendations. Mr. Yunker received his B.A. in economics from Lawrence University (Wisconsin.) and his M.A. in economics from the University of Minnesota.


JUDY ZIEWACZ is the director of the Wisconsin Office of Energy Independence (OEI) which was created by Governor Doyle on April 5, 2007. Ms. Ziewacz has 32 years of experience in the public and private sectors. Prior to OEI, she served as Deputy Secretary of the Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) for 4r years. She served as chief of staff to a Wisconsin Congressman in Washington, DC; and, as executive director of national cooperative development entities. She has managed the legislative agenda at the state and national levels for cooperative trade associations representing all sizes and sectors of the United States economy including Fortune 500 agriculture cooperatives and minority-owned catering businesses; farm credit banks and consumer credit unions; New York City and rural, senior housing; urban food stores and rural energy services.



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