Gold Intersected at Atna's Clover Project

    VANCOUVER, Feb. 20 /CNW/ - Atna (TSX:ATN) has received assay results from
reverse circulation drilling completed in late 2007 by Yamana Gold Inc.
(TSX:YRI) (NYSE:  AUY) on Atna's Clover project, Elko County, Nevada. Yamana
intersected encouraging gold/silver mineralization including 35 feet grading
0.321 oz/ton gold and 0.54 oz/ton silver (hole CV006) and 25 feet grading
0.03 oz/ton gold and 7.97 oz/ton silver (hole CV007). Yamana's drilling
followed up drill intersections reported by previous owners in the Clover Hill
area of the property, which included intercepts of 32 feet grading 0.76 oz/ton
gold (including 2.5 feet grading 8.27 oz/ton gold and 6.69 oz/ton silver),
5 feet grading 0.87 oz/ton gold, and 5 feet grading 0.55 oz/ton gold.
    Yamana completed seven (7) drill holes totaling 5,320 feet before
suspending the program due to winter weather conditions. The holes ranged in
depth from 600 feet to 915 feet and were inclined at various angles to cut the
structural zones thought to host the gold and silver mineralization. Yamana is
expected to resume drilling in the spring, when weather permits.
    The Clover project is a low-sulphidation, vein-hosted, epithermal gold
prospect located adjacent to the Midas trough within the Northern Nevada Rift.
Clover's geologic setting is similar to Newmont Mining's Ken Snyder (Midas)
mine, which is in a similar package of volcanic rocks adjacent to the Midas
trough 10 miles further east. Additional targets to be tested on the property
include a geophysical anomaly in the Jake Creek structural corridor near the
occurrence of high-grade (30.9 g/t) gold bearing float located 1 - 1.5 miles
north of the newly reported Yamana drill results.
    The following table summarizes significant results from the Yamana/Clover
drill program:

    Drill hole       From         To        Length       oz/ton       oz/ton
                    (feet)     (feet)     (feet)(*)          Au           Ag
    CV001             810        815             5        0.004         1.58
      and             850        860            10        0.002         1.52
    CV004             550        560            10        0.031         0.08
    CV005             440        470            30        0.031         0.05
      including       465        470             5        0.110         0.22
    CV006             590        660            70        0.190         0.31
      including       590        625            35        0.321         0.54
      including       600        605             5        1.581         0.81
    CV007             415        575           160        0.012         1.43
      including       415        485            70        0.014         3.19
      or              415        440            25        0.031         7.97

    (*) Intercept lengths do not represent true widths of the mineralized
        zones. Insufficient information currently exists in the areas of the
        mineralized intercepts to determine accurately the true widths.

    Atna's President and CEO, David Watkins, is excited about the results
stating, "Yamana's exploration drill results confirm potential for the
discovery of bonanza-grade vein systems at Clover. We look forward to
additional results when Yamana's field activities resume in the spring."
    Yamana may earn a 51% interest in the Clover property by incurring
exploration expenditures of US$3,300,000 and making payments to Atna totaling
$635,000 before June 19, 2010. Yamana may elect to increase its interest to
70% by completing a prefeasibility study within 30 months of vesting its
initial 51% interest in the project.
    Yamana is a Canadian gold producer with significant gold production, gold
development stage properties, exploration properties, and land positions in
Brazil, Argentina, Chile, Mexico, Central America and the United States.
Yamana is producing gold and other precious metals at intermediate company
production levels in addition to significant copper production. Company
management plans to continue to build on this base through existing operating
mine expansions and throughput increases, the advancement of its exploration
properties and by targeting other gold consolidation opportunities in Brazil,
Argentina and elsewhere in the Americas.
    All assay data from the Yamana drill holes were completed by ALS Chemex
and ISO certified analytical laboratory. Assays were completed by standard
fire assay methods and Atomic Absorption finish for both gold and silver with
over limit assays being re-assayed by standard fire assay with a gravimetric
finish. Yamana and ALS Chemex have rigorous QA and QC protocols in place to
insure the quality of the analytical data reported in this press release. This
press release was prepared under the supervision and review of
William Stanley, V.P. Exploration of Atna, a Licensed Geologist, and Qualified
Person with the ability and authority to verify the authenticity and validity
of information contained within this news release.

    Forward-Looking Statements

    Except for the statements of historical fact that may be contained
herein, this news release contains "forward-looking statements" within the
meaning of the United States Private Securities Litigation Reform Act of 1995.
Forward-looking statements are based on the opinions and estimates of
management at the date that the statements are made, and are subject to a
variety of risks and uncertainties and other factors that could cause actual
events or results to differ materially from those projected in the
forward-looking statements. Such factors include, but are not limited to,
risks involved in the exploration and development of mineral properties; the
uncertainties involved in interpreting drilling and other exploration results;
fluctuating commodity prices and exchange rates; the possibility of project
cost overruns or unanticipated costs and expenses; the need to obtain
additional financing and uncertainty as to the availability and terms of
future financing; environmental risks and hazards; and other risks and
uncertainties disclosed in the Company's current Annual Information Form filed
with the Canadian securities regulatory authorities and Form 20-F filed with
the United States Securities and Exchange Commission. The Company undertakes
no obligation to update forward-looking statements if circumstances or
management's estimates or opinions should change. The reader is cautioned not
to place undue reliance on forward-looking statements.

For further information:

For further information: visit our website,, or contact:
ATNA RESOURCES LTD., Kendra Johnston, Investor Relations Manager & Geologist,
Tel: (604) 684-2285, E-mail:

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