Shane Shifflett reported that, “For American producers who rely on the nation’s waterways to export and distribute billions of tons of grains, coal and chemicals each year, aging locks systems on rivers and the frequent delays they cause cost more than just time.“‘If we have a barge stopped on the Upper Mississippi…commodities sit there until the problem is fixed,’ says Rick Calhoun, president of Cargill Carriers, the Minnetonka, Minn.-based barge operator for the largest U.S. agricultural company by sales. ‘There’s no detours, there’s no way to do much but wait. And waiting costs a lot of money.’