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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.  )
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o   Definitive Proxy Statement
þ   Definitive Additional Materials
o   Soliciting Material Pursuant to §240.14a-12
 
ALLIS-CHALMERS ENERGY INC.
 
(Name of Registrant as Specified In Its Charter)
 
 
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Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting of
 
ALLIS-CHALMERS ENERGY INC.
 
To Be Held On:
 
Thursday, June 17, 2010 at 9:00 A.M. CST
 
5075 Westheimer, Suite 890, Houston, Texas 77056
 
                   
                   
 
          COMPANY NUMBER      
                   
            ACCOUNT NUMBER      
                   
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This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting.
 
If you want to receive a paper or e-mail copy of the proxy materials you must request one. There is no charge to you for requesting a copy. To facilitate timely delivery please make the request as instructed below before June 3, 2010.
 
Please visit http://www.amstock.com/proxyservices/viewmaterial.asp?CoNumber=15258, where the following materials are available for view:
 
• Notice of Annual Meeting of Stockholders
 
• Proxy Statement
 
• Form of Electronic Proxy Card
 
• Annual Report on Form 10-K
 
TO REQUEST MATERIAL: TELEPHONE: 888-Proxy-NA (888-776-9962) and 718-921-8562 (for international callers)
 
E-MAIL: info@amstock.com
 
WEBSITE: http://www.amstock.com/proxyservices/requestmaterials.asp
 
TO VOTE: ONLINE: To access your online proxy card, please visit www.voteproxy.com and follow the on-screen instructions. You may enter your voting instructions at www.voteproxy.com up until 11:59 PM Eastern Time the day before the cut-off or meeting date.
 
IN PERSON: You may vote your shares in person by attending the Annual Meeting.
 
TELEPHONE: To vote by telephone, please visit https://secure.amstock.com/voteproxy/login2.asp to view the materials and to obtain the toll free number to call.
 
MAIL: You may request a card by following the instructions above.
 
             
             
1.
   
Election of Directors:

NOMINEES:      Saad Bargach
Alejandro P. Bulgheroni
Giovanni Dell’Orto
Victor F. Germack
James M. Hennessy
Munawar H. Hidayatallah
Robert E. Nederlander
John T. Reynolds
Zane Tankel
   
2. To ratify the appointment of UHY LLP as the Company’s independent registered public accounting firm.

3. To transact any other business as may properly be presented at the Annual Meeting or any adjournment or postponement thereof.

The Board of Directors recommends a vote FOR proposals 1 and 2.

These items of business are more fully described in the proxy statement. The record date for the Annual Meeting is April 20, 2010. Only stockholders of record at the close of business on that date may vote at the meeting or any adjournment thereof.
Please note that you cannot use this notice to vote by mail.