Mary and Dale Andringa will speak as presenters in the Leadership and Entrepreneurship Program at Central College Tuesday morning. Currently, Mary is the president and CEO of Vermeer Corporation, and Dale is involved in not-for-profit work following nearly three decades of medical practice. The Andringas will share experiences and insights from their careers with those in attendance in the Cox-Snow Recital Hall at Central College, starting at 11:00 a.m. Tuesday morning.