Clarke is named general manager of World Dairy Expo (Wisconsin State Journal) Mark Clarke was named Tuesday to succeed Tom McKittrick as general manager of World Dairy Expo. Clarke, 39, of Deforest, has been product manager for Bou-Matic, a Madison dairy equipment manufacturer, for the past four years and will take over the dairy show 's top leadership position Nov. 12. "I don 't see making any huge changes coming right out of the gate, " Clarke said at a news conference. ... [News Source]