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Former co-op officer pleads guilty in grain-blending case

Jun 11, 2020 at 12:47 PM CST

Calvin Diehl entered his plea Tuesday in U.S. District Court in Sioux City to one count of conspiracy to defraud the United States. He and Kenneth Ehrp are charged with directing Farmers Cooperative Society workers from 2011 to 2017 to layer higher-valued soybeans over oats in grain bins and in trucks and then conceal the practice from customers and U.S. Department of Agriculture inspectors in order to deceive them about the quality and quantity of the grain they were selling and storing.