GOLDEN, Colo., Nov. 15, 2012 /PRNewswire/ -- Atna
Resources Ltd. ("Atna" or the "Company") (TSX:ATN/OTCQB:ATNAF)
is pleased to provide head grade assay results from the Mag
Pit metallurgical drilling program at its Pinson Mine near
Winnemucca, Nevada. In May and
June of this year, Atna completed four large diameter core holes to
confirm continuity of mineralization and to acquire metallurgical
sample materials from the potential open pit resource in the Mag
Pit area of the property. The Mag Pit zone is separated from the
underground mine and may be developed independently after
permitting is completed. Head assay results confirm the grade and
continuity of the modeled resource and will provide sample material
for the metallurgical work which is underway, as part of a
prefeasibility study.
Highlights from the drill results include:
- 154.5 feet (47.1 m) grading 0.057 oz/ton gold (1.97 g/t gold)
in hole Magmet-001
- 238 feet (72.5 m) grading 0.041 oz/ton gold (1.40 g/t gold) in
hole Magmet-001
- 162 feet (49.4 m) grading 0.098 oz/ton gold (3.36 g/t gold) in
hole Magmet-002
- 41 feet (12.5 m) grading 0.059 oz/ton gold (2.03 g/t gold) in
hole Magmet-003
"This drilling was successful in confirming strong continuity of
the gold resource remaining in the Mag pit. Gold was previously
produced from the Mag pit by conventional open pit, heap leach
methods. Production ceased in 1999 due to low gold prices.
Information from this metallurgical study program will be utilized
to confirm past results and to provide additional data for process
design. A reputable engineering firm has been retained to complete
a pre-feasibility study to demonstrate the potential economic
viability of developing an open-pit heap leach operation at Pinson.
The study is targeted for completion in the first half of 2013,"
states Atna's President & CEO, James
Hesketh.
Hole
ID
|
From-feet
(m)
|
To-feet
(m)
|
Length-feet
(m)
|
oz/ton
Au*
(g/t
Au)
|
Estimated True
Thickness-feet (m)
|
Magmet-001
|
0
(0)
|
154.5
(47.1)
|
154.5
(47.1)
|
0.057
(1.95)
|
115
(35.1)
|
Magmet-001
|
170
(51.8)
|
408
(124.4)
|
238
(72.5)
|
0.041
(1.40)
|
166
(50.6)
|
Magmet-002
|
252
(76.8)
|
292
(89.0)
|
40
(12.2)
|
0.030
(1.03)
|
38
(11.6)
|
Magmet-002
|
335
(102.1)
|
497
(151.5)
|
162
(49.4)
|
0.098
(3.36)
|
158
(48.2)
|
including
|
335
(102.1)
|
448
(136.5)
|
113
(34.4)
|
0.122
(4.18)
|
110
(33.5)
|
including
|
448
(136.5)
|
497
(151.5)
|
49
(14.9)
|
0.043
(1.47)
|
48
(14.6)
|
Magmet-003
|
310
(94.5)
|
362.5
(110.5)
|
52.5
(16.0)
|
0.014
(0.48)
|
50
(15.2)
|
Magmet-003
|
368
(112.2)
|
409
(124.7)
|
41
(12.5)
|
0.059
(2.02)
|
40
(12.8)
|
Magmet-003
|
409
(124.7)
|
459
(139.9)
|
50
(15.2)
|
0.022
(0.75)
|
47
(14.3)
|
Magmet-003
|
459
(139.9)
|
514
(156.7)
|
55
(16.8)
|
0.044
(1.50)
|
53
(16.2)
|
Magmet-004
|
270
(82.3)
|
310.5
(94.6)
|
40.5
(12.3)
|
0.018
(0.62)
|
38
(11.6)
|
Magmet-004
|
370
(112.8)
|
417
(127.1)
|
47
(14.3)
|
0.018
(0.62)
|
45
(13.7)
|
Magmet-004
|
439
(133.8)
|
500
(152.4)
|
61
(18.6)
|
0.022
(0.75)
|
58
(17.7)
|
* Gold grades reported represent averages of triplicate fire
assays on head samples splits.
Analytical results contained within this press release were
completed by standard fire assay methods with an atomic absorption
or gravimetric finish by McClelland Laboratories, an independent,
metallurgical laboratory located in Sparks, Nevada. McClelland maintains a
rigorous QA/QC protocol in its laboratory and the results reported
represent the average sample grades in the laboratory's triplicate
assay procedure for determining metallurgical head grades.
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, who has verified the authenticity and
validity of the technical information contained within this news
release.
For additional information on Atna Resources and the Pinson Gold
Mine, 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 Pinson Mine. 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 Pinson 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 2011 Form 20-F dated
March 26, 2012.
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.