What does the company mine where James T. Prokopanko is a former president?
phosphate and potash
Title: James T. Prokopanko
Passage: 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.
Title: The Mosaic Company
Passage: The Mosaic Company is a Fortune 500 company based in Plymouth, Minnesota, a Minneapolis suburb.  Mosaic mines two key crop nutrients—phosphate and potash—and produces specialty products MicroEssentials, K-Mag and Pegasus.  It is the largest U.S. producer of potash and phosphate fertilizer.
Title: York Iron Company Mine
Passage: York Iron Company Mine is a historic iron mine site located at North Codorus Township, York County, Pennsylvania.  The underground mine was originally opened in 1854, with additional openings dug in 1876-1877.  The mine remained in operation until 1888.
The Mosaic Company James T. Prokopanko