Allied Nevada Gold Corp.

9790 Gateway Drive

Reno, NV 89521 USA NEWS RELEASE

Allied Nevada Announces Hycroft Mill Expansion Feasibility Results Highlighted by Improved Projected Returns

October 15, 2014 | Reno, Nevada - Allied Nevada Gold Corp. ("Allied Nevada", "us", "we", "our" or the "Company") (TSX: ANV; NYSE MKT: ANV) is pleased to provide a summary of the Hycroft mill expansion feasibility study results, completed by M3 Engineering and Technology ("M3") in association with the Company. M3 developed the process flow sheet, capital cost estimate, operating cost estimate and financial model, while Allied Nevada developed the heap leach metrics, taxes, mineral reserves and mine plan. The feasibility study assumptions are largely the same as in the prefeasibility study issued in May,

2014, and continue to assume a two-phase construction plan for the mill expansion.

A summary of the significant changes from prefeasibility to feasibility are highlighted below. Consistent with the prefeasibility study, the base case metal price assumptions of $1,300 per ounce gold and $21.67 per ounce silver have been utilized in the feasibility study. The feasibility is presented on a January 1,

2015, go-forward basis and the comparative prefeasibility results have been adjusted to reflect the same start time. We intend to file a National Instrument 43-101 Technical Report within the 45-day regulatory timeframe.

Highlights of Significant Changes to the Feasibility:

Randy Buffington, President & CEO, stated, "this project is one of the only economic, permitted large projects in the gold space today and has the potential to become a significant, low-cost producer with a long reserve life and large open resource behind that."

1. The prefeasibility economics, as filed in May 2014, were based on the period January 1, 2014, forward. For comparative purposes with the feasibility, we have adjusted the prefeasibility metrics to begin January 1, 2015.

2. All costs are on a go-forward basis and consider capital spent to date as sunk costs. Net Present Value ("NPV") and Internal Rate of Return ("IRR") are calculated using $1,300 per gold ounce and $21.67 per silver ounce and additional assumptions set forth in the table titled "Assumpti ons used in the feasibility study estimate" at the end of this press release. No assurance or guarantee is provided that the calculated IRR or NPV values will be achieved. Actual results may differ mate rially

3. The term "adjusted cash costs per ounce" is a non-GAAP financial measure. Non-GAAP financial measures do not have any standardized meaning prescribed by GAAP and, therefore, should not be considered in isolation or as a substitute for measures of performance prepared in accorda nce with GAAP. See the section at the end of this press release and in the most recently filed Annual Report on Form 10 -K titled "Non-GAAP Financial Measures" for further information on adjusted cash costs per ounce.

Overview

The feasibility study is based on a nominal 120,000 ton per day ("tpd") mill for oxide, transition and sulfide ore and the associated heap leach for lower grade oxide and transition ore as presented in the prefeasibility study in May 2014. The mill is designed and scheduled to be constructed in two phases of

60,000 tpd each. Throughput varies based on ore hardness. The mill flow sheet components include crushing, grinding, flotation, concentrate regrind, concentrate oxidation and leaching, tails leaching, Merrill-Crowe extraction and refining. Our projections are based on detailed engineering, which we expect to begin in early 2015, and construction of Phase 1 anticipated commencing in the second quarter of 2015, subject to our ability to secure the necessary financing. Phase 1 is scheduled to be completed within 24 months, which would result in commissioning in the second quarter of 2017. The feasibility study projects commissioning of Phase 2 to be at the end of the second quarter of 2018, 12 months following completion of Phase 1.

The following summarizes feasibility LOM assumptions, compared with the same prefeasibility assumptions, for the mill expansion project:

Capital Estimate

The capital has increased to $1.39 billion (up $66 million) primarily resulting from the following: the change in construction of two 120kV power lines to one 345kV line to ensure reliable power availability; additional conveyors and crushed ore storage for the crushing/pre-crush and pebble crushing circuits; increased site general costs and confirmation of geotechnical analysis on required earthworks; and increased sizing for the thickener tanks. These increases were partially offset by a decrease in contingency reflecting the improved confidence level of the capital estimate with 88% of the estimated equipment capital costs now associated with vendor quotes.

Mining and processing

We completed an optimized mine plan that resulted in an additional 52 million ore tons that will be processed during the LOM and a reduced strip ratio of 1.50 (from 1.56). Mining unit costs have decreased slightly resulting from improved haul profiles and a reduction in mining equipment fleet requirements.

The process flow sheet has not changed and still considers a process plant capable of processing three streams: Mill 1 - whole ore; Mill 2 - Atmospheric Alkaline Oxidation ("AAO"); and Mill 3 - AAO with tails leach. A reevaluation of the economic benefit of processing an additional 440 million tons through the

Hycroft Mill Expansion: Feasibility Study Results 2

tails leach (Mill 3 scenario) as compared with the Mill 2 scenario resulted in additional overall ounces and improved economics.

Mill process costs did not change materially on a per unit basis. Total ton weighted costs increased

$0.31/ton to $9.14/ton resulting from the processing of the additional 440 million tons through the Mill 3 scenario, which are more than offset by the revenue from additional ounces recovered. The 440 million tons were assumed to be processed through Mill 2 without the benefit of the additional recovery from tails leaching in the prefeasibility study.

Recovered ounces differ in the table above as compared to the ounces sold in the life of mine economics. The table above shows the ounces placed and recovered on a going-forward basis only to calculate recovery. The life-of-mine model includes 266,000 recoverable ounces of gold and 2,127,000 ounces of recoverable silver in the heap leach inventory at January 1, 2015, and also accounts for ounce reductions due to melt loss and non-payable ounces from the refinery.

Economic Analysis

As noted above, the results of the revised prefeasibility study indicate an IRR projected to be 28.6% and a NPV projected to be $1.81 billion at a discount rate of 5%, assuming gold and silver prices of $1,300 per ounce and $21.67 per ounce, respectively, and based on the additional assumptions set forth in the table titled "Assumptions used in the feasibility study estimate" at the end of this press release. The initial capital to construct the mill and associated infrastructure is on a go-forward basis and does not include capital spent to date on the mill expansion such as the crushing system, Merrill-Crowe plant, mills, motors and excavation. The cash flow model considers the current heap leach revenue and costs as part of the project, which was developed by Allied Nevada.

The Hycroft mill expansion is projected to generate a significant amount of gold and silver at relatively low adjusted cash costs per ounce1. The project, however, is extremely sensitive to metal prices. The following table illustrates the sensitivity of changes to calculated IRR and NPV2 at 0% and 5% discount rates at various gold and silver prices and based on a constant ratio of the silver price to the gold price of

60:1. Additional sensitivity would result from changes to this ratio.

1. The term "adjusted cash costs per ounce" is a non-GAAP financial measure. Non-GAAP financial measures do not have any standardized meaning prescribed by GAAP and, therefore, should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. See the section at the end of this press release and in the most recently filed Annual Report on Form 10-K titled "Non- GAAP Financial Measures" for further information on adjusted cash costs per ounce.

2. No assurance or guarantee is provided that the calculated IRR or NPV values will be achieved. Actual results may differ materially.

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Financing update

We continue to work with interested parties towards establishing a financing plan for the first phase of construction.

Conference Call Information

Allied Nevada will host a conference call to discuss the feasibility study results on October 16, 2014 at

8:00 am PT (11:00 am ET), which will be followed by a question and answer session. To listen in to the

audio webcast, visit www.alliednevada.com.

To access the call, please dial:

Toll‐free in North America - 1‐866-233-4585

Outside of Canada & US - 1‐416-640-5946

An audio recording of the call will be archived on our website following the meeting.

For further information on Allied Nevada, please contact:

Randy Buffington Tracey Thom

President & CEO Vice President, Investor Relations

(775) 358-4455 (775) 789-0119

Assumptions used in the feasibility study estimate:

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Feasibility Study Economic Analysis Summary:

Metal selling prices used in determining the economics for the project were $1,300 per ounce of gold and

$21.67 per ounce of silver. Gold equivalent is calculated using a 60:1 silver to gold ounce ratio.

No assurance or guarantee is provided that the calculated IRR or NPV values will be achieved. Actual results may differ materially.

1. The term "adjusted cash costs per ounce" is a non-GAAP financial measure. Non-GAAP financial measures do not have any standardized meaning prescribed by GAAP and, therefore, should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. See the section at the end of this press release and in the most recently filed Annual Report on Form 10-K titled "Non- GAAP Financial Measures" for further information on adjusted cash costs per ounce.

Hycroft Mill Expansion: Feasibility Study Results 5

Cautionary Statement Regarding Forward Looking Information

This press release contains forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended (the "Securities Act"), Section 21E of the U.S. Securities Exchange Act of 1934, as amended (the"Exchange Act") (and the equivalent under Canadian securities laws) and the Private Securities Litigation Reform Act (the "PSLRA") or in releases made by the U.S. Securities and Exchange Commission (the "SEC"), all as may be amended from time to time. This cautionary statement is being made pursuant to the Securities Act, the Exchange Act and the PSLRA with the intention of obtaining the benefit of the "safe harbor" provisions of such laws.
All statements, other than statements of historical fact, included herein or incorporated by reference, that address activities, events or developments that we expect or anticipate will or may occur in the future, are forward-looking statements. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "estimate", "plan", "anticipate", "expect", "intend", "believe", "project", "target", "budget", "may", "can", "will", "would", "could", "should", "seeks", or "scheduled to", or other similar words, or negatives of these terms or other variations of these terms or comparable language or any discussion of strategy or intentions. Such forward-looking statements include, without limitation, statements regarding our future business strategy, plans and goals; future gold and silver prices; delays in processing gold and silver; the potential for confirming, upgrading and expanding gold and silver mineralized material at Hyc roft; reserve and resource estimates and the timing of the release of updated estimates; estimates of gold and silver grades; future prices for gold and silver; recovery rates for gold and silver; anticipated operating, capital and construction costs, ; anticipated sales, project economics, net present values and expected rates of return; the realization of expansion and construction activities and the costs and timing thereof; availability and cos t of financing; production estimates 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. These statements involve known and unknown risks, uncertainties, assumptions and other factors which may cause our actual results, performance or achievements to be materially different from any results, performance or achievements expressed or implied by such forward-looking statements. Important factors that could cause actual results, performance or achievements 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; an increase in the cost of or a delay or deferral timing of new projects, including construction or expansion projects; the inherently hazardous nature of mining-related activities; uncertainties concerning reserve, resource and grade estimates; uncertainties relating to obtaining approvals and permits from governmental regulatory authorities; and availability and timing of capital for financing the Company's exploration, development and expansion 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 SEC inc luding 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 www.alliednevada.com or at the SEC website www.sec.gov). Although Allied Nevada has attempted to identify important factors that could cause actual results, performance or achievements to differ materially from those described in forward-looking statements, there may be other factors that cause results, performance or achievements not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results, performance and achievements and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. 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 laws.
The technical contents of this news release have been prepared under the supervision of Daniel Roth, Project Manager at M3 Engineering and
Technology, and Tony Peterson, Corporate Mine Engineer at Allied Nevada Gold Corp., a Registered Professional Engineer in the State of Colorado
#43867 who are Qualified Persons as defined by National Instrument 43-101. For further information regarding the quality assurance program and
the quality control measures applied, as well as other relevant technical information, please see technical report titled "Hycroft Mine, NI 43-101
Technical Report, Mill Expansion Prefeasibility Study, Winnemucca, Nevada, USA" and dated May 21, 2014 on http://www.sedar.com/www.sedar.com.

Non-GAAP Financial Measure

Adjusted Cash Costs Per Ounce

Adjusted cash costs per ounce is a non-GAAP financial measure, calculated on a per ounce of gold sold basis, and includes all direct and indirect operating cash costs related to the physical activities of producing gold, including mining, processing, cash portions of production costs written- down, the effective portion of any cash flow hedges, third party refining expenses, on-site administrative and support costs, royalties, and mining production taxes, net of revenue earned from silver sales. Because we are a primary gold producer and our operations focus on maximizing profits and cash flows from the extraction and sale of gold, we believe that silver revenue is peripheral and not material to our key performance measures or our Hycroft Mine operating segment and, as such, adjusted cash costs per ounce is reduced by the benefit received from silver sales.
Adjusted cash costs per ounce provides management and investors with a further measure, in addition to conventional measures prepared in accordance with GAAP, to assess the performance of our mining operations and ability to generate cash flows over multiple periods from the sale of gold. Non-GAAP financial measures do not have any standardized meaning prescribed by GAAP and, therefore, may not be comparable to similar measures presented by other mining companies. Accordingly, the above measures are intended to provide additional information and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP.

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