In the thirty years after World War II, more than sixty companies in the United States manufactured center-pivot irrigation systems. Today there are four major suppliers, all located in Nebraska: Valmont (in Valley and Mc- Cook, with plants in South Africa, Spain, and the United Arab Emirates), Lindsay (headquarters in Omaha and plants in Lindsay, Nebraska, and France), Reinke (in Deshler), and T-L (in Hastings). These four companies supply 85 percent of the global demand for center pivots and virtually all of the North American market requirement. All four companies go to market through networks of exclusive dealers and distributors. Center pivots are now used in more than 100 countries around the globe.