Canadian Prime Minister Stephen Harper talks to farmers and supporters about the first day of open markets for grain farmers, at Kindersley August 1, 2012. Western Canada's grain-marketing monopoly, a system dating back to World War Two and the last of its kind in the world, ends on Wednesday, officially opening a new era of competition for grain in the breadbasket of the seventh largest wheat growing country. REUTERS/David Stobbe (CANADA - Tags: POLITICS AGRICULTURE BUSINESS)