Mountain States Legal Foundation Files Petition With US Supreme Court for Atna Resources in
the McDonald Takings Case

Golden, CO � July 22, 2008 - Atna Resources Ltd. (�Atna�) � (TSX: ATN), is pleased to announce that Mountain States Legal Foundation (�MSLF�) has filed a petition for writ of certiorari on behalf of Atna�s wholly owned subsidiary, Seven-Up Pete Venture and other property owners, with the United States Supreme Court in the case Seven-Up Pete Venture, et al. v Brian Schweitzer, et al. MSLF is a nonprofit, public interest law firm dedicated to individual liberty, the right to own and use property, limited and ethical government and the free enterprise system. 

�We are extremely pleased that MSLF has decided to take this case. Their decision affirms the belief in the strength of our case and that an injustice has been done to the Company�s interests. The recent ruling on this case by the U.S. Court of Appeals for the Ninth Circuit held that states are immune from suits in federal court premised upon violations of the U.S. Constitution, which requires the payment of just compensation when private property is �taken.� This issue may have significant impact on the integrity and value of property rights in the U.S. and requires clarification as a point of law by the U.S. Supreme Court,� states James Hesketh, President, COO & Director.

The McDonald takings claim was initiated in April 2000 as a result of the passage of the 1998 I-137 anti-cyanide ballot initiative in the State of Montana. Passage of this initiative resulted in an unprecedented law that was narrowly crafted to specifically outlaw the use of cyanide to recover gold from ores mined by open pit methods. This legislation was the first of its kind in the U.S. By the time the initiative passed, the Seven-Up Pete Venture had spent over $70 million on drilling, permitting and engineering at the McDonald gold project in Montana. The passage of this initiative critically impaired the project.

FURTHER INFORMATION:

For further information on Mountain States Legal Foundation please visit www.mountainstateslegal.org

For additional information on Atna Resources, please visit our website at www.atna.com or contact:

James Hesketh, President and COO (303) 278-8464
Valerie Kimball, Investor Relations (303) 278-8464 or toll free (877) 692-8182

Renmark Financial Communications Inc.
Barbara Komorowski : bkomorowski@renmarkfinancial.com
Barry Mire : bmire@renmarkfinancial.com
Tel. : (514) 939-3989
Fax : (514) 939-3717
www.renmarkfinancial.com