Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our reports dated February 27, 2004 accompanying the 2003 consolidated financial statements and Schedule II of U.S. Energy Corp. and subsidiaries included in the Annual Report on Form 10-K for the year ended December 31, 2005 which are incorporated by reference in this Registration Statement and Prospectus. We consent to the incorporation by reference in the Registration Statement and Prospectus of the aforementioned reports and to the use of our name as it appears under the caption “Experts”.

/s/ GRANT THORNTON LLP

Oklahoma City, Oklahoma

June 5, 2006