Which company that mines two key crop nutrients—phosphate and potash did James T. Prokopanko  serve as president and Chief Executive Officer of?
James T. Prokopanko James T. Prokopanko is the former president and Chief Executive Officer of The Mosaic Company and has served in that capacity from January 1, 2007 to August, 2015. He was a director of the company since October 2004.
Jochen Tilk Jochen Tilk is President and CEO of PotashCorp as from July 1, 2014. Previously he served as CEO of Inmet Mining Corporation, a Canadian metals company with operations in Turkey, Finland, Spain, and development in Panama, between 2009 and 2013. He is also the former Chair of Petaquilla Copper Limited.