 The governor is calling on a federal study of the current and former mining operations under and near Gordon Moore Park in Alton. A sinkhole opened up in the park under the turf fields on Wednesday, swallowing a light pole on the field, but did not result in injuries. J.B. Pritzker's office said it was caused by a previous mining operation in the area and falls under the jurisdiction of the U.S. Department of Labor's Office of Mine Safety and Health Administration.