Uranium Resources routinely posts news and other information about the Company on its website at www.uraniumresources.com.Additional Information Uranium Resources, Inc., a Delaware corporation (“URI”) entered into, among other transaction documents, a definitive merger agreement on March 1, 2012, by and among URI, URI Merger Corporation, a Nevada corporation and an indirect wholly-owned subsidiary of URI (“Merger Sub”), and Neutron Energy, Inc., a Nevada corporation (“Neutron”) under which Merger Sub will be merged with and into Neutron, with Neutron continuing as the surviving corporation and becoming an indirect wholly-owned subsidiary of URI (the “Transaction”). In connection with the proposed Transaction, URI has filed a registration statement on Form S-4, including a joint proxy statement/prospectus and other relevant documents with the Securities and Exchange Commission (the “SEC”) and has mailed the joint proxy statement/prospectus to stockholders. Stockholders are urged to read the registration statement and joint proxy statement/prospectus, and any other relevant documents filed with the SEC, as well as any amendments or supplements to those documents, because they will contain important information. The registration statement and joint proxy statement/prospectus as well as other filings containing information about URI and Neutron, can be obtained without charge at the Company’s website or by directing a request to URI’s proxy solicitor: Regan & Associates, Inc., 1.800.737.3426. URI and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of URI in connection with the proposed Transaction. Information about the directors and executive officers of URI is set forth in the proxy statement for URI’s 2012 annual meeting of stockholders, as filed with the SEC on April 30, 2012. Additional information regarding the interests of those participants and other persons who may be deemed participants in the proposed Transaction may be obtained by reading the joint proxy statement/prospectus regarding the proposed Transaction. Investors may obtain free copies of these documents as described above.