http://www.austexoil.com/irm/content/oilandgas_overview.html
Copper project is listed on company website as 26,000 acres at 53% WI so that would be 13,780net acres. They do show another Kansas project, Jewell, with 35,000 acres at 30% WI or a little over 10,000 acres. The counties involved don't appear to be in the outlines I've seen for the Mississippian.