Dave Jump has been the CEO of American Milling LP since 1984. American Milling is in the river transportation and grain trading and handling business. The company has owned and operated towboats and barges on all segments of the western rivers, with facilities on the Illinois and Upper Mississippi rivers. In the St. Louis area, the company owns and operates barge loading facilities and barge fleets. Prior to joining American Milling, he worked as a commodity trader for Ralston Purina, Con Agra, and Consolidated Grain and Barge, with responsibilities involving freight and transportation management.