Atna Announces Expansion of Deep
Briggs Zone
Golden, CO -- Atna Resources Ltd. ("Atna")
--(TSX:ATN -- OTCBB:ATNAF) is pleased to report results from drilling
focused on mineralization in the Deep Briggs zone at the Briggs Mine in
Inyo County, California. These new holes, taken in conjunction with
recently reported drilling in the same area, are establishing a
continuous zone with mineable widths and grade above the average mine
grade. Significant results include:
- 205
feet (62.5 meters) grading 0.025 ounces gold per ton
("opt") (0.86 grams/tonne gold)
in the Deep Briggs zone, including 55 feet (16.8 meters) grading
0.048 opt (1.65 g/t) in hole number BMD11-063
- 100
feet (30.5 meters) grading 0.019 opt (0.65g/t) in the Main Briggs
zone and 110 feet (33.5 meters) grading 0.019 opt (0.065g/t) which
includes a 30 foot (9.1 meter) zone grading 0.030 opt (1.03g/t) in
the Deep Briggs zone in hole number BMD11-067
"This drilling program validates the new geologic model for Briggs
developed by Bill Stanley, our Vice President, Exploration.
This drilling clearly demonstrates potential to increase the resource
base. Success in this program should increase economic mineral reserves,
which will allow us to achieve our goal of increasing gold production and
reducing operating cost," said James Hesketh,
President & CEO.
These holes are contiguous with and extend the broad mineralized zones
encountered in drilling described in previous press releases dated
February 28 and March 22, 2011. Drilling of Deep Briggs continues and is
targeted to fill in between these existing drill holes and to extend the
mineralized zone along trend. The samples from two additional drill holes
are currently being shipped to Inspectorate America for analysis.
Detailed Assay Results
Hole
|
From-feet
(meters)
|
To-feet
(meters)
|
Length-feet
(meters)
|
ounces/ton Au
(grams/tonne Au)
|
Zone
|
BMD11-063 (Azimuth 270�, Angle -60�)
|
|
0 (0)
|
30
(9.1)
|
30
(9.1)
|
0.014
(0.48)
|
Main
Briggs
|
|
50
(15.2)
|
255
(77.7)
|
205
(62.5)
|
0.025
(0.86)
|
Main/Deep Briggs
|
including
|
120
(36.6)
|
175
(53.4)
|
55
(16.8)
|
0.048
(1.65)
|
Main/Deep Briggs
|
|
360
(109.8)
|
380
(115.9)
|
20
(6.1)
|
0.016
(0.55)
|
Deep Briggs
|
|
410
(125.0)
|
450
(137.2)
|
40
(12.2)
|
0.020
(0.69)
|
Deep Briggs
|
|
565
(172.3)
|
595
(181.4)
|
30
(9.1)
|
0.016
(0.55)
|
Deep Briggs
|
BMD11-067 (Azimuth 300�, Angle -60�)
|
|
15
(4.6)
|
25
(7.6)
|
10
(3.0)
|
0.022
(0.75)
|
Main
Briggs
|
|
45
(13.7)
|
145
(44.2)
|
100
(30.5)
|
0.019
(0.65)
|
Main
Briggs
|
including
|
120
(36.6)
|
145
(44.2)
|
25
(7.6)
|
0.026
(0.89)
|
Main
Briggs
|
|
340
(103.7)
|
450
(137.2)
|
110
(33.5)
|
0.019
(0.65)
|
Deep Briggs
|
including
|
350
(106.7)
|
380
(115.9)
|
30
(9.1)
|
0.030
(1.03)
|
Deep Briggs
|
|
600
(182.9)
|
655
(199.7)
|
55
(16.8)
|
0.013
(0.45)
|
Deep Briggs
|
|
680
(207.3)
|
720
(219.5)
|
40
(12.2)
|
0.010
(0.34)
|
Deep Briggs
|
* Intercept length may not represent true
thicknesses of the mineralized body due to oblique intersection of the
mineralized zone by the drill hole.
Analytical results contained within this press release were completed by
standard fire assay methods with an atomic absorption or gravimetric
finish by Inspectorate America Corporation, an independent, ISO certified, analytical laboratory located in Sparks, Nevada. Atna maintains a rigorous Quality Assurance - Quality
Control (QA/QC) program utilizing both certified gold standards and
blanks to augment Inspectorate's internal QA/QC program.
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.
For additional information on Atna Resources and
the Briggs Mine, please visit our website at www.atna.com.
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 potential resource or reserve
expansion at the Briggs Mine. Forward-looking statements are statements
that are not historical fact. 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
production and operating costs at the Briggs Mine, 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 2010 Form 20-F dated March 23, 2011.
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
|