Hanover Compressor Company Presentation Scheduled for Howard Weil 35th Annual Energy Conference

Hanover Compressor Company (NYSE:HC), a global market leader in full service natural gas compression and a leading provider of service, fabrication and equipment for oil and natural gas production, processing and transportation applications, will be presenting at the Howard Weil 35th Annual Energy Conference on Wednesday, April 4 in New Orleans. John Jackson, President and Chief Executive Officer, will be presenting on Wednesday, April 4, 2007 at 2:40 p.m. Eastern. The presentation will not be webcast; however, the presentation slides will be made available on the company’s website at www.hanover-co.com immediately after the presentation. About Hanover Compressor Company Hanover Compressor Company (NYSE:HC) is a global market leader in full service natural gas compression and a leading provider of service, fabrication and equipment for oil and natural gas production, processing and transportation applications. Hanover sells and rents this equipment and provides complete operation and maintenance services, including run-time guarantees for both customer-owned equipment and its fleet of rental equipment. Founded in 1990 and a public company since 1997, Hanover's customers include both major and independent oil and gas producers and distributors as well as national oil and gas companies. More information can be found on the Internet (www.hanover-co.com). Forward-looking Statements Certain matters discussed in this presentation are "forward-looking statements" intended to qualify for the safe harbors established by the Private Securities Litigation Reform Act of 1995 and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements can generally be identified as such because of the context of the statement or because the statement includes words such as "believes," "anticipates," "expects," "estimates," or words of similar import. Similarly, statements that describe Hanover's future plans, objectives or goals or future revenues or other financial measures are also forward-looking statements. Such forward-looking statements are subject to risks and uncertainties that could cause our actual results to differ materially from those anticipated as of the date the statements were made. These risks and uncertainties include, but are not limited to: our inability to renew our short-term leases of equipment with our customers so as to fully recoup our cost of the equipment; a prolonged substantial reduction in oil and natural gas prices, which could cause a decline in the demand for our compression and oil and natural gas production and processing equipment; reduced profit margins or the loss of market share resulting from competition or the introduction of competing technologies by other companies; changes in economic or political conditions in the countries in which we do business, including civil uprisings, riots, terrorism, the taking of property without fair compensation and legislative changes; changes in currency exchange rates; the inherent risks associated with our operations, such as equipment defects, malfunctions and natural disasters; governmental safety, health, environmental and other regulations, which could require us to make significant expenditures; our inability to implement certain business objectives, such as international expansion (including our ability to timely and cost-effectively execute projects in new international operating environments), integrating acquired businesses, generating sufficient cash, accessing capital markets, refinancing existing or incurring additional indebtedness to fund our business, and executing our exit and sale strategy with respect to assets classified on our balance sheet as assets held for sale; risks associated with any significant failure or malfunction of our enterprise resource planning system and our inability to comply with covenants in our debt agreements and the decreased financial flexibility associated with our substantial debt. A discussion of these and other factors is included in the Company's periodic reports filed with the Securities and Exchange Commission. Additional Information In connection with the proposed merger, a registration statement of the new company, Iliad Holdings, Inc., which includes proxy statements of Universal Compression Holdings, Inc. and Hanover Compressor Company, and other materials, has been filed with the Securities and Exchange Commission. INVESTORS AND SECURITY HOLDERS ARE URGED TO CAREFULLY READ THE REGISTRATION STATEMENT AND THE PROXY STATEMENT/PROSPECTUS AND THESE OTHER MATERIALS REGARDING THE PROPOSED MERGER, BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT UNIVERSAL, HANOVER, ILIAD HOLDINGS AND THE PROPOSED TRANSACTION. Investors and security holders may obtain a free copy of the registration statement and the proxy statement/prospectus and other documents containing information about Universal and Hanover, without charge, at the SEC’s web site at www.sec.gov, Universal’s web site at www.universalcompression.com, and Hanover’s web site at www.hanover-co.com. Copies of the registration statement and the proxy statement/prospectus and the SEC filings that will be incorporated by reference therein may also be obtained for free by directing a request to either Investor Relations, Universal Compression Holdings, Inc., 713-335-7000 or to Investor Relations, Hanover Compressor Company, 832-554-4856. Participants in Solicitation Hanover Compressor Company and Universal Compression Holdings, Inc. and their respective directors, officers and certain other members of management may be deemed to be participants in the solicitation of proxies from their respective stockholders in respect of the merger. Information about these persons and their interests in the solicitation of proxies in respect of the merger has been included in the registration statement of Iliad Holdings, Inc. and the joint proxy statement/prospectus filed with the SEC in connection with the proposed transaction.