Uranium Resources, Inc. Announces Exercise and Closing of Over-Allotment Option for Recent Public Offering

Uranium Resources, Inc. (NASDAQ: URRE) ('URI?) announced today that Roth
Capital Partners, the sole manager of its recent underwritten registered
offering of common stock, has fully exercised their over-allotment
option and have purchased an additional 1,072,500 shares at a price of
$1.16 per share. The sale of the additional shares closed today.

The over-allotment option was granted in conjunction with the Company′s
underwritten registered offering of 7,150,000 shares completed on
November 3, 2010. With the exercise of the over-allotment option, a
total of 8,222,500 shares of common stock were sold in the offering with
net proceeds to URI of approximately $9.0 million, after deducting
underwriting discounts and commissions and estimated offering expenses.
The Company plans to use the proceeds for general corporate purposes and
to fund potential future acquisitions.

The offering was made pursuant to a shelf registration statement on Form
S-3 filed with the Securities and Exchange Commission on May 7, 2010,
which became effective on May 21, 2010. Copies of the final prospectus
supplement filed with the Securities and Exchange Commission (the 'SEC?)
may be obtained by visiting the SEC Web site at www.sec.gov,
or by contacting:

Roth Capital Partners

By Email: rothecm@roth.com

By
Fax: 949.720.7227

Or by mail:

24 Corporate Plaza Drive

Newport
Beach, CA 92660

ATTN: Equity Capital Markets

About Uranium Resources, Inc.

Uranium Resources Inc. explores for, develops and mines uranium. Since
its incorporation in 1977, URI has produced over 8 million pounds of
uranium by in-situ recovery (ISR) methods in the state of Texas where
the Company currently has ISR mining projects. URI also has 183,000
acres of uranium mineral holdings and 101.4 million pounds of in-place
mineralized uranium material in New Mexico, as well as a NRC license to
produce up to 1 million pounds of uranium. The Company acquired these
properties over the past 20 years along with an extensive information
database of historic mining logs and analysis. None of URI′s properties
is currently in production.

URI′s strategy is to fully exploit its resource base in New Mexico and
Texas, expand its asset base both within and outside of New Mexico and
Texas, partner with larger mining companies that have undeveloped
uranium or with junior mining companies that do not have the mining
experience of URI, as well as provide restoration expertise to those
that require the capability or lack the proficiency.

Uranium Resources routinely posts news and other information about the
Company on its Web site at www.uraniumresources.com.

Safe Harbor Statement

This press release contains forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995.
Forward-looking statements are subject to risks, uncertainties and
assumptions and are identified by words such as 'expects,? 'estimates,?
'projects,? 'anticipates,? 'believes,? 'could,? and other similar words.
All statements addressing operating performance, events, or developments
that the Company expects or anticipates will occur in the future,
including but not limited to statements relating to the Company′s
mineralized uranium materials, timing of receipt of mining permits,
production capacity of mining operations planned for properties in South
Texas and New Mexico, planned dates for commencement of production at
such properties, revenue, cash generation and profits are
forward-looking statements. Because they are forward-looking, they
should be evaluated in light of important risk factors and
uncertainties. These risk factors and uncertainties include, but are not
limited to, the spot price and long-term contract price of uranium,
weather conditions, operating conditions at the Company′s mining
projects, government regulation of the mining industry and the nuclear
power industry, world-wide uranium supply and demand, availability of
capital, timely receipt of mining and other permits from regulatory
agents and other factors which are more fully described in the Company′s
documents filed with the Securities and Exchange Commission. Should one
or more of these risks or uncertainties materialize, or should any of
the Company′s underlying assumptions prove incorrect, actual results may
vary materially from those currently anticipated. In addition, undue
reliance should not be placed on the Company′s forward-looking
statements. Except as required by law, the Company disclaims any
obligation to update or publicly announce any revisions to any of the
forward-looking statements contained in this press release.

Investors

Kei Advisors LLC

Deborah K. Pawlowski,
716-843-3908

dpawlowski@keiadvisors.com

or

Media

Uranium
Resources, Inc.

April Wade, 505-440-9441

awade@uraniumresources.com

or

Company

Uranium
Resources, Inc.

Don Ewigleben, 972-219-3330

President & Chief
Executive Officer