Allied Nevada Provides Update on 2012 Metallurgical Testing

Allied Nevada Provides Update on 2012 Metallurgical Testing Programs 
Overall Recoveries Improve to Approximately 79.7% for Gold and 85.5%
for Silver 
RENO, NEVADA -- (Marketwire) -- 01/16/13 -- Allied Nevada Gold Corp.
("Allied Nevada" or the "Company") (TSX:ANV)(NYSE Amex:ANV)(NYSE
MKT:ANV) is providing an update on the results of ongoing
metallurgical test work conducted in 2012 in support of the Hycroft
mill expansion.   
A comprehensive pilot plant scale program, primarily for the
generation of concentrate products for oxidation testing, was
completed for Hycroft mill material. The testing simulated our
proposed flow sheet of primary crushing, grinding to 150 microns (100
mesh), rougher flotation, leaching to extract the non-refractory
silver, pressure oxidation to extract the refractory gold
(autoclaving) and cyanidation. The results through this flow sheet
indicated overall recoveries of approximately 79.7% for gold and
85.5% for silver. These results are an improvement of 1.7% for gold
and 0.6% for silver as compared with the recoveries used in the
technical report titled "Technical Report - Allied Nevada Gold Corp.,
Hycroft Mine, Winnemucca, Nevada, USA", (the "April 2012 Technical
Report"). These results assume onsite autoclaving of rougher
concentrate and do not account for offsite charges.   
If two-stage cleaning were included in this flow sheet, which may be
done for certain concentrate sales agreements, testing indicated
overall recoveries would be approximately 71.1% for gold and 81.0%
for silver. The cleaning stage involves "rougher" concentrate
reporting to a regrind mill where it is ground to 80% passing 45
microns and passed though cleaning cells to remove additional waste
material, reducing the mass. These results are an improvement of
21.1% for gold and 11.5% for silver as compared to recoveries used in
the April 2012 Technical Report.  
"While we do not yet know the full impact of these recovery
improvements on the financial returns for the project, we anticipate
these results will show an improvement to the overall economics,"
commented David Hill, Vice President, Metallurgy. "We intend to
integrate the results of this testing into the next Hycroft 43-101
update, expected in the first quarter of 2013."  
As noted in ou
r April 2012 Technical Report, we intend to construct
and operate an autoclave that will process approximately one-third of
our rougher concentrate beginning in 2021. We intend to sell all of
our concentrate before the autoclave is built and the excess
concentrate that is produced while our autoclave is operating.
Concentrate is expected to be sold as either rougher or cleaner
depending on the requirements of the offsite processing plant
Laboratory testing by ore type and pilot plant scale testing was
performed on seven composites over the course of the program. The
composites were comprised of two 2-ton bulk samples of drill core
taken from Central and Vortex/Brimstone and five 1-ton domain samples
from Brimstone sulfide, Central sulfide, Central transitional, and
Vortex sulfide. The domain samples represent the first five years of
We continue to prefer the autoclave as an oxidation step, however,
all of the concentrate produced have been and will continue to be
tested for amenability to the various oxidation methods including
autoclaving, roasting, fine grinding, bioxidation and offsite
processing facilities.  
Cautionary Statement Regarding Forward-Looking Information 
This press release contains forward-looking statements within the
meaning of the U.S. Securities Act of 1933, the U.S. Securities
Exchange Act of 1934 (and the equivalent under Canadian securities
laws) and the Private Securities Litigation Reform Act, that are
intended to be covered by the safe harbor created by such sections.
Statements that are not historical fact are forward-looking
statements. Forward-looking statements can be identified by, among
other things, the use of forward-looking language, such as the words
"plan", "believe", "expect", "anticipate", "intend", "estimate",
"project", "may", "will", "would", "could", "should", "seeks", or
"scheduled to", or other similar words, or the negative of these
terms or other variations of these terms or comparable language, or
by discussion of strategy or intentions. Such forward-looking
statements include, without limitation, statements regarding expected
mineral recovery rates; reserve and resource estimates and the timing
of the release of updated estimates; anticipated costs, project
economics, the realization of expansion and construction activities
and the timing thereof and other statements that are not historical
facts. Forward-looking statements address activities, events or
developments that Allied Nevada expects or anticipates will or may
occur in the future, and are based on current expectations and
assumptions. Although Allied Nevada management believes that its
expectations are based on reasonable assumptions, it can give no
assurance that these expectations will prove correct. Important
factors that could cause actual results to differ materially from
those in the forward-looking statements include, among others, risks
that Allied Nevada's exploration and property advancement efforts
will not be successful; risks relating to fluctuations in the price
of gold and silver; the inherently hazardous nature of mining-related
activities; uncertainties concerning reserve and resource estimates;
uncertainties relating to obtaining approvals and permits from
governmental regulatory authorities; and availability and timing of
capital for financing the Company's exploration and development
activities, including the uncertainty of being able to raise capital
on favorable terms or at all; as well as those factors discussed in
Allied Nevada's filings with the U.S. Securities and Exchange
Commission (the "SEC") including Allied Nevada's latest Annual Report
on Form 10-K and its other SEC filings (and Canadian filings)
including, without limitation, its latest Quarterly Report on Form
10-Q (which may be secured from us, either directly or from our
website at or at the SEC website
The Company does not intend to publicly update any forward-looking
statements, whether as a result of new information, future events, or
otherwise, except as may be required under applicable securities
The technical contents of this news release have been prepared under
the supervision of Donald A. Harris, a Certified Professional
Geologist with American Institute of Professional Geologists
(A.I.P.G.), #10819, who is Manager of Exploration, Hycroft for Allied
Nevada Gold Corp. and is a Qualified Person as defined by National
Instrument 43-101. For further information regarding the verification
procedures, quality assurance program and the quality control
measures applied, as well as other relevant technical information,
please see the technical report titled "Technical Report, Allied
Nevada Gold Corp. Hycroft Mine, Winnemucca, Nevada, USA" dated April
9, 2012, available on or on the Company's website.
Allied Nevada Gold Corp.
Scott Caldwell
President & CEO
(775) 358-4455 
Allied Nevada Gold Corp.
Tracey Thom
Vice President, Investor Relations
(775) 789-0119
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