US BioEnergy to Acquire Millennium Ethanol Adding 100 mgy of Production Capacity

Business Wire, May 31, 2007

Millennium Ethanol, LLC and its directors and officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in respect to the proposed transactions. Information regarding the identity of each participant and a description of each participant's direct or indirect interest in the solicitation from the proxy materials relating to the proposed transaction, when those materials become available.

Forward-looking Statements

Certain matters discussed in this news release are "forward-looking statements." The Private Securities Litigation Reform Act of 1995 has established that these statements qualify for safe harbors from liability. Forward-looking statements may include words like "believe," "anticipate," "target," "expect," "pro forma," "estimate," "intend," "guidance" or words of similar meaning. These statements include, but are not limited to, the benefits of the business combination transaction involving US BioEnergy Corporation and Millennium Ethanol, including future results, expectations regarding the construction schedule and capacity of the Marion plant and other statements that are not historical facts. Such statements are based on current beliefs, expectations, forecasts and assumptions of US BioEnergy Corporation's and Millennium Ethanol, LLC's management, which are subject to risks and uncertainties which could cause actual outcomes and result to differ materially from these statements. Other risks and uncertainties relating to the proposed transaction include, but are not limited to the satisfaction of conditions to closing; including receipt of member, regulatory and other consents and approvals; delays in consummating the proposed transaction; uncertainty of the expected financial performance of US BioEnergy Corporation following completion of the proposed transaction; fluctuations in the market prices and trading volumes of US BioEnergy common stock; difficulties in achieving expected cost savings, synergies and other strategic benefits; and difficulties associated with the integration of Millennium Ethanol with US BioEnergy's operations. For more information regarding other related risks, see Item 1A of US BioEnergy Corporation's Annual Report on Form 10-K for the fiscal year ended December 31, 2006 and Item 1A of Millennium Ethanol, LLC's Registration Statement on Form 10 filed with the SEC on April 30, 2007. Copies of these reports are available online at http://www.sec.gov. Any forward-looking statement speaks only as of the date such statement was made, and neither US BioEnergy nor Millennium Ethanol undertake any obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement was made except as required by applicable laws or regulations.