Atna Cuts 120 feet Grading 0.057 oz/ton Gold at Reward Gold Project

GOLDEN, Colo., March 25, 2013 /PRNewswire/ -- Atna Resources Ltd. ("Atna" or the "Company") (TSX:ATN/OTCQB:ATNAF) is pleased to provide results from the remaining drill holes in the recently completed Reward gold project drilling program near Beatty, NV. The drilling program is designed to expand the existing resource and reserves at Reward. Fourteen holes were completed in the program for a total footage of 9,013 feet (2,747 m). Assays have been received on all holes with continued promising results in the new zone announced last month (February 25^th, 2013 press release).

Highlights from the new drill results include:

• 145 feet (44.2 m) grading 0.020 oz/ton gold (0.68 g/t gold) in hole RW13-038
• 115 feet (35.1 m) grading 0.020 oz/ton gold (0.68 g/t gold) in hole RW13-042
• 80 feet (24.4 m) grading 0.041 oz/ton gold (1.42 g/t gold) and 50 feet (15.2 m) grading 0.016 oz/ton gold (0.55 g/t gold) in hole RW13-049
• 120 feet (36.6 m) grading 0.057 oz/ton gold (1.95 g/t gold) which includes 45 feet (13.7 m) grading 0.109 oz/ton gold (3.73 g/t gold) in hole RW13-050.

"The second round of results along the eastern and southeastern flank of the main Reward gold deposit has confirmed the presence of a new gold zone at Reward. The zone has now been traced for over 800 feet (240 m) along strike and remains open to the north, south and down dip to the east. An additional drilling program is being designed to follow-up on these promising results," states Atna's President & CEO, James Hesketh.

Reward Drilling Assay Results

Gold mineralization at Reward is controlled principally by the Good Hope fault zone; a sheeted, steeply dipping, north-south-trending quartz-vein zone. Adjacent to the Good Hope fault, the phyllitic quartzite, siltstone, and shales dip moderately to the east (45 degrees) and are host to more disseminated gold mineralization associated with narrow iron oxide veinlets (after pyrite) and minor quartz veining. The Reward gold deposit has been sampled by more than 350 holes totaling more than 130,000 feet drilled by a number of mining entities over the past 15 years including the Company. Gold mineralization has been encountered over a strike length of more than 2,400 feet and to a depth of 750 feet along the Good Hope structure. The width of mineralization within the structural zone ranges from a few feet to up to 200 feet and the bedded zones along the southeastern flank of the main Reward deposit attains thicknesses in excess of 300 feet. The Reward gold project has received both US and State permits that will allow construction of the mine.

Analytical results contained within this press release were completed by standard fire assay methods with an atomic absorption finish by American Assay Laboratories, an independent, IAS accredited Testing Laboratory (ISO/IEC Standard 17025:2005) serving the mining industry of northern Nevada located in Sparks, Nevada. American Assay maintains rigorous QA/QC procedures in its laboratory and its assurance program is bolstered by Atna's internal QA/QC protocol to insure reliable and reproducible analytical results.

This press release was prepared under the supervision and review of William Stanley, V.P. Exploration of Atna, a Registered Member of the Society for Mining, Metallurgy, and Exploration, a Licensed Geologist and Qualified Person, as defined in NI 43-101, and has verified the authenticity and validity of the technical information contained within this news release.

For additional information on Atna Resources and the Reward Gold Mine Project, please visit our website at www.atna.com or our filings with Canadian securities regulators on SEDAR or U.S. regulators on EDGAR.

This press release contains certain "forward-looking statements," as defined in the United States Private Securities Litigation Reform Act of 1995, and within the meaning of Canadian securities legislation relating to the Reward Gold project. Forward-looking statements are statements that are not historical facts. They are based on the beliefs, estimates and opinions of the Company's management on the date the statements are made and they involve a number of risks and uncertainties. Consequently, there can be no assurances that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. The Company undertakes no obligation to update these forward-looking statements if management's beliefs, estimates or opinions, or other factors, should change, unless required by law. Factors that could cause future results to differ materially from those anticipated in these forward-looking statements include: gold deposit modeling, development and future operating costs at the Reward gold project, the Company might encounter problems such as the significant depreciation of metals prices; accidents and other risks associated with mining exploration and development operations; the risk that the Company will encounter unanticipated geological factors; the Company's need for and ability to obtain additional financing; the possibility that the Company may not be able to secure permitting and other governmental clearances necessary to carry out the Company's exploration and development programs; and the other risk factors discussed in greater detail in the Company's various filings on SEDAR (www.sedar.com) with Canadian securities regulators and its filings with the U.S. Securities and Exchange Commission, including the Company's 2012 Form 20-F dated March 21, 2013.

Cautionary Note to U.S. Investors --- The United States Securities and Exchange Commission permits U.S. mining companies, in their filings with the SEC, to disclose only those mineral deposits that a company can economically and legally extract or produce. We use certain terms in this report, such as "measured", "indicated", "inferred", and "resources" that the SEC guidelines strictly prohibit U.S. registered companies from including in their filings with the SEC.

FOR FURTHER INFORMATION, CONTACT:

James Hesketh, President and CEO - (303) 278-8464 
Valerie Kimball, Investor Relations - toll free (877) 692-8182 
www.atna.com  

SOURCE Atna Resources Ltd.