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Exhibit 13-3

Producing Corn Ethanol: Dry Milling

The ethanol production process starts by grinding up feedstock so that it can be processed more easily. Once ground, the sugar either is dissolved out of the material or the starch is converted into sugar. The sugar then is fed to microbes that use it for food, producing ethanol and carbon dioxide in the process. A final step purifies the ethanol to the desired concentration. Finally, the ethanol is stored in above- ground tanks until it can be transported.

For more information on this exhibit, please contact the Comptroller’s Data Services Division at 512-463-4900 or at P.O. Box 13528, Austin, Texas 78711-3528.

Source: Renewable Fuels Association.

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