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8-K - FORM 8-K - Willbros Group, Inc.\NEW\c18235e8vk.htm
(GRANT THORNTON LOGO)
May 31, 2011
     
 
  Audit Tax Advisory
 
   
 
  Grant Thornton LLP
 
  333 Clay Street, 27th Floor
 
  Houston, TX 77002-4168
U.S. Securities and Exchange Commission
   
Office of the Chief Accountant
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100 F Street, NE
  F 713.655.8741
Washington, DC 20549
  www.GrantThornton.com
Re:   Willbros Group, Inc.
File No. 1-11953
Dear Sir or Madam:
We have read Item 4.01 of Form 8-K of Willbros Group, Inc. dated May 25, 2011, and agree with the statements concerning our Firm contained therein.
Very truly yours,
-s- Grant Thornton LLP
Grant Thornton LLP
U.S. member firm of Grant Thornton International Ltd