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Exhibit 32.2

URANIUM RESOURCES, INC.
405 State Highway 121 Bypass, Building A, Suite 110, Lewisville, TX 75067
972.219.3330 Phone 972.219.3311 Fax
www.uraniumresources.com

April 9, 2008

Securities and Exchange Commission
450 5^th Street, N.W.
Washington, D.C. 20549

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2003

        I, Thomas H. Ehrlich, Vice President—Finance and Chief Financial Officer of Uranium Resources, Inc. (the "Company"), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)

The Annual Report on Form 10-K/A of the Company for the year ended December 31, 2007, which this certification accompanies, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and



(2)

The information contained in the Annual Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/  THOMAS H. EHRLICH Thomas H. Ehrlich
Vice President and Chief Financial Officer
April 9, 2008

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Exhibit 32.2

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2003