IOWA STATE UNIVERSITY Department of Economics Ames, Iowa, 50011-1070 Iowa State University does not discriminate on the basis of race, color, age, religion, national origin, sexual orientation, gender identity, sex, marital status, disability, or status as a U.S. veteran. Inquiries can be directed to the Director of Equal Opportunity and Diversity, 3680 Beardshear Hall, (515) 294-7612. O-Ring Production on U.S. Hog Farms: Joint Choices of Farm Size, Technology, and Compensation Li Yu, Peter Orazem Working Paper No. 08029 January 2011