Yesterday's announcement of the sale of the Kansas City Board of Trade (KCBOT) to the CME Group is another reminder of just how much the grain business in the United States has changed since the mid-20th century. When we first became involved with it, there were grain exchanges of one sort or another located in most major origination or processing markets and/or locations where different modes of transportation met. As originally established, some of them tried to emulate Chicago and operate grain and oilseed futures markets as well as a cash grain trade. However, besides the Chicago Board of Trade (CBOT) the only grain futures markets that managed to survive were the hard red winter wheat contract at the KCBOT and the spring wheat contra...