Molybdenum Opportunity

Bruce D. HansenChief Executive Officer

Robert PenningtonChief Operating Officer

March 2017Toronto

GMO: NYSE MKT & TSX

GMONYSE MKT

& TSX

Cautionary StatementsThis presentation contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, andSection 21E of the Securities Exchange Act of 1934, as amended, that are intended to be covered by the safe harbor created by suchsections. Such forward-looking statements include, without limitation, (i) estimates of future molybdenum prices, supply, demand and/orproduction; (ii) estimates of future cash costs, direct operating costs, costs applicable to sales (CAS), or royalty payments; (iii) estimates offuture capital expenditures; (iv) estimates regarding timing of permitting, future development, construction or production activities; (v)statements regarding cost structure, project economics, or competitive position, and (vi) statements comparing Mt. Hope to other mines,projects, or metals. Where the Company expresses or implies an expectation or belief as to future events or results, such expectation or beliefis expressed in good faith and believed to have a reasonable basis. However, forward-looking statements are subject to risks, uncertaintiesand other factors, which could cause actual results to differ materially from future results expressed, projected or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, metals price and production volatility, global economicconditions, currency fluctuations, increased production costs and variances in ore grade or recovery rates from those assumed in mining plans,exploration risks and results, political, operational and project development risks, including the Company’s ability to reobtain water permitsand Record of Decision, and retain other required state and federal permits to commence construction and its ability to obtain suitablefinancing for development of the Mt. Hope project, adverse governmental regulation and judicial outcomes. For a more detailed discussion ofsuch risks and other factors, see the Company’s Annual Report on Form 10K, which is on file with the Securities and Exchange Commission, aswell as the Company’s other SEC filings. The Company does not undertake any obligation to release publicly revisions to any “forward-lookingstatement,” to reflect events or circumstances after the date of this presentation, or to reflect the occurrence of unanticipated events, exceptas may be required under applicable securities laws.

Cautionary Note to U.S. Investors Concerning Estimates of Reserves and Resources

Calculations with respect to "proven reserves" and "probable reserves" referred to herein have been made in accordance with, and using thedefinitions of National Instrument 43-101, as required by Canadian securities regulatory authorities. For United States reporting purposes, theU.S. SEC applies a different standard in order to classify mineralization as a "reserve". Under SEC standards, mineralization may not beclassified as a "reserve" unless the determination has been made that the mineralization could be economically and legally extracted orproduced at the time the reserve determination is made. No such determinations have been made with respect to any mineralization at theLiberty project, and it cannot be assured that such a determination will be made. This presentation also uses the terms “measured”,“indicated” and “inferred” resources. We caution U.S. investors that while such terms are recognized and required by Canadian SecuritiesAdministrators pursuant to the National Instrument 43-101, the SEC does not recognize them. U.S. investors are cautioned not to assume thatany part or all of mineral deposits in these categories will ever be converted into reserves. “Inferred Resources”, in particular, have a greatamount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all orany part of an Inferred Mineral Resource will ever be upgraded to a higher category. Under Canadian Securities Administration rules,estimates of Inferred Mineral Resources may not form the basis of feasibility or pre-feasibility studies. U.S. investors are cautioned not toassume that part or all of an inferred resource exists, or is economically or legally minable.

Please refer to End Notes in the Appendix for certain slides. 2

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GMONYSE MKT

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Investment Highlights

Mt. Hope Project,

one of world’s

largest & highest

grade

undeveloped moly

deposits, and

previously mined

Liberty Project

World-Class Molybdenum

Medium-Term Producer

Strategic

PartnershipsTangible

Assets

Financial

Stability

Mt. Hope Project

bankable feasibility

complete; 65%

engineered

Advancing on new

air quality analysis

for supplemental

Environmental

Impact Statement

Develop upon

sustained market

improvement &

financing

Strategic

relationship with

largest share-

holder, Chinese

multinational

AMER

Mt. Hope partner-

ship with Korean

POSCO unit

Off-take sales

agreements with

international

companies –

ArcelorMittal,

SeAH Besteel and

Sojitz Corporation

80% interest in

$87M of plant &

mine equipment at

Mt. Hope Project

$21M in other

Company tangible

assets

Able to fund current

business activities

& working capital

into 2Q 2018i

Third quarter cash

$11.0Mi

Restricted Mt. Hope

Project cash

$13.0M sufficient to

sustain project

through 2021i

i. Please see the Company’s latest quarterly results news release of November 7, 2016

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GMONYSE MKT

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GMO = Moly Pure-Play Leverage GMO is the only pure-play, western exchange traded moly stock

Thompson Creek Metals was acquired by Centerra and Alloycorp was privatized

Significant upside in GMO shares

New presidential Executive Orders to revive major oil & gas pipeline projects (moly is a major component of steel pipes)

U.S. and global infrastructure investments are ramping up

Limited supply from few potential mine expansions

Further historical corollary is the AMER investment in GMO in April 2015

GMO share price rose from $0.50 pre-announcement to $0.81 high in June 2016. (Moly price fell from ~$8 to ~$7 per lb during that period.)

GMO Share Price +116%

Mo Price +18%

Source: CPM Group for moly price

Moly GMO

YTD 2017

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Capital Structure Major institutional shareholders:

1. AMER 12.0%

2. Hanlong 10.7%

3. APERAM i 7.4%

4. Coghill Capital 3.3%

5. University Texas Inv. Mgt. 2.6%

6. Vanguard Group 2.2%

7. Blackrock Fund Advisors 1.5%

Insider ownership total ii 17.3%

Bruce Hansen, CEO 2.6%

Other senior management 2.2%

Research coverage Heiko Ihle, H.C. Wainwright

John Tumazos, JT Very Independent Research

Exchanges: TickerNYSE MKT; TSX: GMO

Recent stock price $0.54

Stock 52-week high/low $0.72/$0.20

Shares outstanding (M) 110.6

Recent moly price iii $7.77

Moly 52-week high/low iii$8.10/$5.35

Financial Highlights iv (M) 9/30/2016

Cash and cash equivalents $11.0

Working capital $9.8

Restricted cash at Mt. Hope $13.0

Long-term debt & sr. convert. $6.9

Total shareholders’ equity $111.5

i. APERAM, the former stainless steel division of ArcelorMittal, was spun off as a separate public company as of January 2011.ii. Insider ownership includes AMER shareholdings on basic shares outstanding.iii. Source: CPM Groupiv. Please refer to the Company’s Q3 2016 news release issued on November 7, 2016 and Form 10-Q filed the same day.

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Molybdenum Market i Poised to Rise

Strengthening world steel production

+7% YOY for January 2017 +5.5% YOY for December 2016

7 consecutive months of YOY increases signaling rising steel demand

Catalysts for demand resurgence Revival in oil & gas sector and

major pipeline projects

Other energy capital investments

Global and China infrastructure expansion (specialty steel)

Supply adjusting to lower prices KGHM lowered Sierra Gorda annual

production by 10M lbs

40M lbs removed in 2015 from shutdowns at Thompson Creek, Endako & Mineral Park

Total Chinese moly production down 3.3% (~5M lbs) in 2015

Freeport McMoRan cut moly forecast by 34M lbs in 2016-17

i Source: World Steel Association, CPM Group, China's National Development and Reform Commission, Freeport McMoRan, Thompson Creek and news reports.

Current price unsustainable. Strong long-term fundamentals.

Recent moly price/ lb

Up 45% from 52-weeklow of $5.35= $7.77 =

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Molybdenum PriceHistorical Prices 2006-To Date i CPM & Roskill Projections ii

$7.85

$9.55$10.90$11.00

$12.00

$17.15$15.95$15.20

$12.00 $11.50

$11.00

i. Source: CPM Group.ii. CPM Group’s February 2016 Report and Roskill’s January 2016 Molybdenum Report for projected real prices based on 2015 real

dollars. Inset bar chart: CPM Group data.

$12.00 $11.45$11.50$11.50

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018p 2019p 2020p 2021p 2022p 2023p 2024p

$10.50

$8.33 $9.85

$11.98

$16.45

2014-16 2012-16 2010-16 2007-16

3-Year Avg. 5-Year Avg. 7-Year Avg. 10-Year Avg.

GMONYSE MKT

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0

200

400

600

800

1000

1200

1400

0 20 40 60 80 100 120 140 160 180 200

Cumulative Molybdenum (Thou. mt)

Primary Producers

Typical Costs(~$6.65 - $12.84)

Typical Costs(~$6.41 -

$7.77)

Typical Costs(~$8.46 -

$9.82)

Typical Costs(~$6.41 -

$8.46)

Molybdenum Costs Curve –as much as ~32% of global producers may be running cash negative i

8

World Molybdenum Cash Operating Costs, 2016 Projection ii

US$/lb pro-rata; no credits

i. At current price of $7.77/lb of molybdenum.ii.Chart represents approximately 93% of total molybdenum production. Source: CPM Group, SNL and company documents.iii.First five years of Optional Plan.

Current moly price

Mt. Hope’s Optional Plan cash operating costs $6.28/lb iii

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GMONYSE MKT

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Ownership 80% General Moly; 20% POSCO

Status Pre-constructionwork suspended

Estimated life * 30 years

P&P reserves,100% (lbs) * 1.4B

Head grade (1st 5 yrs) * 0.09%

Mill recovery rate (1st 5 years) * 89.8%

LOM Strip ratio * 1.7: 1 (waste:ore)

Remaining capex, 100% $1.03B

First 5 years*:

40M lbs/year$6.28 cash op. costs/lb

General Moly’s 80% interest LOM*:

NPV = $734M IRR = 18%After-tax, undiscounted cash flow= $3.8B

Flagship Mt. Hope –A World-Class Moly Project

Among the largest and lowest-cost primary development projects

Invested $285M in permitting & long-lead equipment

Obtain reinstatement of the BLM’s Record of Decision and Nevada water permits i

Mining friendly location in Nevada

Outlook: Improved financing ability with AMER upon market improvement

Reno

BattleMountain

Winnemucca

Carlin

Elko Wells

Austin Eureka Ely

i See Slides 23 and 24 in the Appendix.* Data and reserves reflect upside of an optimized $12/lb

molybdenum pit. See End Note 1 in the Appendix. 9

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Strategic Partner & Largest Shareholder: AMER

10i. Source for AMER background: Fortune, Forbes & AMER’s website.* See End Note 2 in the Appendix.

AMER International Group Snapshot i

Largest GMO shareholder

12% stake from Tranche 113M shares + warrants

Three-trancheinvestment in General Moly *

Invested $4M in 2015.Potential funding from Tranches 2 & 3 for additional $16M.

Fortune Global 500 ranking

Privately owned; 190th on annual revenues of $47.8B

Majorbusinesses

Non-ferrous metals (copper mining, downstream wire/cable fabrication & trading); value-added manufacturing of semi-conductors & polymers

Employees Over 17,000

Headquarters Shenzhen, China

Chairman Mr. Wang Wenyin, ranked 6th richest billionaire in China in 2016 by Forbes

Chairman Wang: “We regard the Mt. Hope and Liberty projects as two of the most promising molybdenum assets worldwide… We also look forward to leveraging General Moly’s mining finance (and technical) expertise to identify and acquire other mining assets in North America.”

GMONYSE MKT

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Key Terms of Investment Agreement* with AMER

$16M in additional funding of Tranches 2 and 3 equity investments by AMER, contingent on certain conditions *

1 director nominee Mr. Tong Zhang from initial Tranche 1 investment of $4M with up to 2 additional director nominees

Jointly identify value-accretive acquisition opportunities, focusing on base metal prospects in North America

Upon molybdenum market improvement, AMER will work with General Moly to procure and support a Bank Loan of approximately $700M from major Chinese banks for development of the Mt. Hope Project

General Moly will provide AMER one-time option for off-take and purchase of the balance of its share of Mt. Hope Project production

When drawdown of Bank Loan becomes available, warrants to purchase $40M in shares of General Moly will become exercisable by AMER

11* See End Note 2 in the Appendix.

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Joint Business DevelopmentEvaluating Opportunities for Mutual Benefit

Evaluating internally-developed list of base metal prospects in North America, identifying distressed and undervalued assets

Examining potential outright acquisitions, privatizations or significant minority investments with financing support

GMO may participate in value creation by

Retaining a minority interest,

Generating management fees, or

Acquiring non-core assets

Presentations to AMER’s Overseas Investment Committee

Stay Tuned for Updates

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General Moly’s Partnerships for Mt. Hope

POS-Minerals, unit of Korean POSCO, owns 20% interest in the Mt. Hope Project

Entitled to 8M lbs of annual production Contributed $210M to development

World’s largest steel producer & Luxembourg based General Moly’s largest customer

Off-take agreements with Korean and Japanese companies

Combined with ArcelorMittal sales contract, approximately 50% of General Moly production (15.5M lbs) committed for first 5 years

Sales contracts’ floor prices of

$13.00 - $13.75/lbCovers 37% of General Moly production

(11.5M lbs/yr) over first 5 years

Sales contracts’ upside participation

80% of price

Above floor price

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GMONYSE MKT

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First 5 years*:

14M Mo lbs

& 7.5M Cu lbs /year

$7.79 cash op. costs/lb Mo

LOM NPV* = $325M IRR* = 17%LOM after-tax, undisc. cash flow*= $1.7B

Next Up –Liberty Moly-Copper Project

Second world-class moly asset

Previously mined for molybdenum and copper Significant infrastructure remains

(electrical, roads, truck shops)

Mining friendly location in Nevada

Outlook: Advancement to Feasibility Study contingent on market improvement

Ownership 100%

Status Completed PFS

Estimated life* 32 years

P&P reserves* (lbs) 482M Mo, 606M Cu

Head grade (1st 5 yrs) * 0.09% Mo; 0.07% Cu

Mill recovery rate(1st 5 years) * 83.5%

Strip ratio* 1.8:1 (waste to ore)

Capex* $366M

Reno

BattleMountain

Winnemucca

Carlin

Elko Wells

Austin

Eureka Ely

Tonopah

* See End Note 3 in the Appendix.

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$(30)

$(20)

$(10)

$-

$10

$20

$30

$40

$-

$2

$4

$6

$8

$10

$12

$14

$-

$5

$10

$15

$20

$25

$30

$35

$40

$45

$5 $10 $15 $20 $25 $30 $35 $40

General Moly has Significant Leverage to the Molybdenum Price with Downside Protection

Moly Spot Price

Realized Price

i. Source: CPM Group.

Downside price protection

Discount to spot above floor price

Price Protection from Off-Take Arrangements

2007 2009 2011 2013 2015 2017

Moly Price/lb i

(RHS)

GMO Share Price (LHS)

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GMONYSE MKT

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General Moly has Significant Leverageto the Molybdenum Price

Every $1/lb change in moly price between $10-$20/lb* NPV

Mt. Hope Project +/- $180M

Liberty Project +/- $95M

General Moly Total NPV +/- $275M

Projects’ Breakeven Prices

Mt. Hope NPV breakeven price /lb $10.82

Mt. Hope cash flow breakeven price /lb $9.35

Liberty NPV breakeven price /lb $11.64

Liberty cash flow breakeven price /lb $9.58

* See End Note 4 in the Appendix.

GMONYSE MKT

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Significant Tangible Asset Value

17

(M, except per share) Current

Cash and cash equivalents (Corporate) i $ 11.0

Restricted cash to be used for loan procurementfund or business opportunities i 1.3

Share of Mt. Hope Project cash(Restricted cash) i,ii 10.4

Share of Mt. Hope’s property, plant & equipment iii 69.8

Cost basis in land, water rights & Liberty Project i 21.1

Long-term debt and convertible debt i (6.9)

Net Tangible Assets $106.7

Net Tangible Assets/GMO share $0.96

i. Please refer to the Company’s Form 10-Q for quarter ended September 30, 2016 as filed on November 7, 2016.ii. Value of Company’s 80% share of the Mt. Hope Project JV reserve account of $13.0M.iii. Represents Company’s 80% ownership of $87.2M in PP&E in the Consolidated Balance Sheets.

GMONYSE MKT

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2017 Priorities

Leverage internal skills working with AMER to identify value-accretive opportunities with a focus on base metal prospects in North America

Obtain reinstatement of the BLM’s Record of Decision and Nevada water permits for Mt Hope i

Achieve new water permits at the Mt. Hope Project to trigger Tranche 2 investment of $6M by AMER, subject to moly price rise

Maintain existing state permits for the Mt. Hope Project

Prudently manage financial liquidity and flexibility to sustain the Company over the medium term and to fund current business activities into 2Q 2018, excluding potential additional AMER investments

18

i See Slides 23 and 24 in the Appendix.

GMONYSE MKT

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Appendix

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Experienced Management Team

20

CEO and a Director since 2007.

Previously served in multiple executive roles at Newmont, including Chief Financial Officer and Senior VP, Operations Services & Development, and was Senior VP, Corporate Development for Santa Fe Pacific Gold. Executed numerous financings and M&A transactions.

CFO since 2015. Controller & Treasurer 2009-2015. *Departing May 2017

Formerly Newmont’s Controller and Director of Supply Chain, Nevada Operations. Prior finance and accounting roles at Santa Fe Pacific Gold and Price Waterhouse. Managed financings at project level.

COO since 2012; joined in 2007 as VP Engineering & Construction.

Over 35 years in mine operations, project engineering and construction. Previously served as general manager of Phelps Dodge’s Morenci Mine, one of the largest open-pit/concentrator operations in the world.

Vice President of Permitting and Environmental Compliance since joining in 2006.

More than 25 years industry experience, including extensive work in Nevada Previously served as Operations Environmental Permitting Manager with Newmont

Manager of Engineering and Development since 2008.

Over 38 years of industry experience. Previously worked for Rio Tinto, Phelps Dodge and Freeport-McMoRan in operations, technical services, research and development, project management and M&A.

Mike IannacchioneVP & GM Mt. Hope

Pat RogersVP Permit. & Envir.

Compliance

Bob PenningtonChief Operating Officer

Lee Shumway*Chief Financial Officer

Bruce HansenChief Executive Officer

Chuck MaxwellMgr. Engineering & Dev.

Chief Legal Officer since 2015; joined in 2010 as VP Human Resources and Corporate Counsel.

Formerly served as General Counsel and Executive Vice President of Law and Human Resources at Flatiron Financial Services and as in-house counsel for Qwest and US West. Financing and corporate deal experience, including cross-border transactions.

Scott RoswellChief Legal Officer & VP HR

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NPV Shows Significant Leverage to Rising Moly Prices

Mt. Hope, Liberty and Combined NPV* ($M)

21

$289

$734

$1,194

$85

$325

$559

$12.50 $15.00 $17.50

Mt. Hope Liberty

Molybdenum price/lb

$374

$1,059

$1,753

* See End Notes 1 and 3 in the Appendix.

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Mt. Hope Equipment Procurement Status (100% basis)

Paid $87.2M on commitments for $174M in equipment orders

Own or secured with order in place for major milling equipment:

Crusher

SAG mill and ball mill

Mill drives

Roaster equipment

Made $75M order with Caterpillar for haul fleet and support equipment, including 18 240-ton haul trucks i

Secured letter of intent for 4 large P&H electric mining shovels i

Ordered 4 Atlas Copco mine drills i

Outlook: Upon an improvement in the markets and obtaining financing, the Company expects to place orders for remainder of equipment.

i. All orders are cancellable with no further liability. There were non-refundable deposits made of $3.4 million to P&H, $1.2 million to Caterpillar and $0.4 million to Atlas Copco.

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Mt. Hope Supplemental EIS The Record of Decision (“ROD”) for the Mt. Hope Project was initially granted in

November, 2012, and subsequently challenged in the U.S. District Court for the District of Nevada by two western U.S. based NGOs ("non-governmental organization"). The U.S. District Court upheld the ROD in August, 2014. The NGOs appealed the U.S. District Court's Order to the U.S. Court of Appeals for the Ninth Circuit in September, 2014.

On December 28, 2016, the Ninth Circuit issued its Opinion rejecting many of the arguments raised by the NGOs challenging the Environmental Impact Statement ("EIS") issued by the BLM. The Ninth Circuit reversed on technical grounds a narrow issue related to a baseline air quality analysis and related cumulative impact examination, and as a result vacated the ROD.

The Company is working closely with the BLM to conduct additional evaluation of air quality studies and will thereafter evaluate further cumulative impact analysis to address the Ninth Circuit’s concerns in a Supplemental EIS.

The Company remains confident in the BLM’s process and looks forward to completing the analysis and public review requirements in compliance with the National Environmental Policy Act ("NEPA"),to receive a new ROD for the eventual construction and operation of the Mt. Hope Project.

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Mt. Hope Water Rights and Permitting Background

In the fall of 2015, the Nevada Supreme Court reversed the prior decisions of the Nevada District Court upholding the Nevada State Engineer’s grant of the project’s water permits and Monitoring, Management and Mitigation (3M) Plan, and remanded the Company’s applications back to the District Court.

In March 2016, the District Court released its Order denying the applications previously approved by the Nevada State Engineer, vacating the permits approved on the applications and vacating the 3M Plan.

The State Engineer and the Company disagree with the District Court’s Order, and believe the proper direction from the Supreme Court was for the District Court to remand the applications to the Nevada State Engineer to address mitigation opportunities to protect against conflicts to senior water right holders.

The State Engineer also asserts that the District Court exceeded its judicial authority . Both the Company and the State Engineer have appealed the Order to the Supreme Court. Oral argument is set for April 4, 2017.

Notwithstanding the appeal to Supreme Court, the Company has filed additional applications that are pending with the State Engineer.

Eureka County has filed a Writ with the Supreme Court to stop further action by the State Engineer on the additional applications.

Supreme Court is considering the Writ in a separate matter.

State Engineer has stopped all action on the applications while the Supreme Court considers the Writ.

The Company will provide additional evidence of its ability to successfully mitigate any potential impacts to senior water right holders. 24

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Future Global Moly Demand Growth Projected to be Robust

2015 moly consumption = 531.6M lbs

Demand projected to increase

~12M lbs/year through 2020

Over 26M lbs/year in 2020-2024

Historical pre-financial crisis moly demand growth rate averaged 6.3% CAGR (1991-2007)

Below, moly demand per capita growth shows increasing intensity of use in China

Moly Demand Per Capita (1999-2018p) ii

532

590

697

World Moly Demand (2015-2024p) i

i. Left hand chart – CPM Group, February 2016. ii. Right hand chart – CPM Group, Antaike, IMOA, World Bank, IMF and Population Bureau.

-

100,000

200,000

300,000

400,000

500,000

600,000

1999 2001 2003 2005 2007 2009 2011p 2013p 2015p 2017p

Pounds per Million People

Japan

Europe

USA

China

Millions of Pounds

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The China Effect = Continued Demand i

China consumes ~31% of global moly and produces ~50% of world’s crude steel and stainless steel

CPM projects China’s molybdenum demand at 5.4% CAGR for 2019-2024

China is increasing use of higher-grade steels and its application intensity of moly

China’s average intensity of use rose 66% from 2005 to ~10 kg of moly per 100 tonnes of steel in 2013, but well below the global average

If China’s intensity of use reached the global average, it would need an additional 80M+ lbsmoly/year

26

37.4

31.2

26.3

9.7

9.2

USA Europe Japan China Russia

China’s State Reserves Bureau purchased for its national stockpile of moly oxide:

5.8M-6.3M lbs in 2014

11.7M-12.6M lbs in 2015

8.5M-9.2M lbs in 1Q 2016

Purchases in 2016 may be on par with or exceed 2015 levels.

i. Source: CPM Group, Molybdenum News Service. Chart – CPM Group, World Steel and IMOA.

Moly Use/ 100M tonnes of Steel - 2013

World Intensityof Use = 15 kg Mo/ 100 tonnes of Steel

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Moly Market End Uses i

27i. Source: SMR Research

5%

2%

4%

6%

7%

8%

8%

13%

13%

14%

20%

Other Applications

Electronics & Medical

Aerospace & Defense

Building & Construction

Power Generation

Other Transportation

Process Industry

Mechanical Engineering

Automotive

Chemical / Petrochemical

Oil & Gas Oil & Gas - Refinery catalysts, LNG development, shale gas installations, off-shore /deep ocean oil production

Chemical / Petrochemical - Corrosion inhibitors, chemical catalysts, fertilizers, waste water treatment

Automotive - Engines, pistons, crankshafts, axle shafts, steering components

Mechanical Engineering - Heavy machinery, mining equipment, cutting tools

Process Industry - Food processing equipment and storage, metal / steel processing, desalination

Power Generation - Coal, oil, gas and nuclear power plants, wind turbines, hydro and solar energy

Other Transportation - Locomotive shafts, train wheels, brake pads, shipbuilding (bulkheads and hulls)

Building & Construction - Major infrastructure: bridges & tunnels, anchors, rebars, heating / ventilation systems

Aerospace & Defense - Turbine parts, jet engines, landing gear, piping systems, armored vehicles

Electronics & Medical - Semiconductors, pharmaceutical and biotechnology processing equipment, x-ray tubes

Other Applications - Pigments, coatings, lubricants

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End Notes to Slides 9, 10, 11, 14, 16 & 211. Mt. Hope Project - Slide 9 and NPV Slide 21:

Data are based on the updated optional mine plan announced in a February 25, 2014 news release and use parameters from the Bankable Feasibility Study Technical Report, which is compliant with Canada National Instrument 43-101, filed in January 2014 and available on the Company’s website.

Operating data represent the averages over the first five years of production under the optional mine plan. Net Present Value and the Internal Rate of Return use the optional mine plan with a $15.00/lb molybdenum price over 24 years of mining and 30 years of mill processing at an 8% discount rate, after tax. Cash flow is based on the same optional mine plan, except it is undiscounted.

The optional mine plan’s proven and probable reserves represent 984.6M tons at an average grade of 0.070% containing 1.4B lbs of molybdenum. Proven reserves are within 320.5M tons at an average molybdenum grade of 0.084% while probable reserves are within 664.1M tons at 0.063%. Mt. Hope Project reserves, based on $12/lb molybdenum, are effective as of January 30, 2014.

2. AMER Slides 10 and 11:Under the amended Investment Agreement with AMER, the Company received $4M ($2M restricted to fund joint business opportunities and

Bank Loan expenses, and $2M general corporate use) from the Trance 1 equity investment. In addition to 13 million GMO shares, AMER also received warrants to purchase 80M shares at an exercise price of $0.50 per share ($40M if fully exercised), exercisable upon availability of a $700M senior secured term loan (Bank Loan). The warrants and its conditions expire April 17, 2017.

AMER is required to complete the Tranche 2 and Tranche 3 equity investments, totaling $16M at higher prices per GMO share, potentially subject to shareholder approval, contingent on certain conditions. Tranche 2 calls for Amer to invest $6M for 12M additional GMO shares priced at $0.50 per share, subject to reinstatement of permits for water rights at the Mt. Hope Project and 30 consecutive days for the molybdenum prices to average in excess of $8/lb. Tranche 3 calls for an investment of $10M for 14.7M GMO shares priced at $0.68 per share, contingent on a final adjudication or settlement of the Mt. Hope water rights permits, if further challenged in the Nevada courts, and for the price of molybdenum to average in excess of $12/lb for a 30-consecutive day period.

3. Liberty Project - Slide 14 and NPV Slide 21:Data are based on the updated Pre-Feasibility Study Technical Report, compliant under Canada National Instrument 43-101, filed in July 2014 and available on the Company’s website.

Operating data represent the averages over the first five years of production. Cash operating costs per pound of molybdenum are estimated using $3.25/lb copper byproduct credits. Net Present Value and Internal Rate of Return use $15/lb molybdenum, $3.25/lb copper over 31 years of mining, 32 years of milling and an 8% discount rate, after tax. Cash flow is based on the aforementioned, except it is undiscounted.

Proven and probable reserves of 309.2M tons at average grades of 0.078% molybdenum and 0.098% copper contain 482M lbs of molybdenum and 606M lbs of copper. Liberty reserves, based on $15/lb molybdenum and $3.00/lb copper, are effective as of July 30, 2014. Proven reserves are within 92.5M tons at average grades of 0.101% molybdenum and 0.056% copper while probable reserves are within 216.7M tons at average grades of 0.068% molybdenum and 0.116% copper.

4. Leverage Slide 16 : (Also see Notes 1 and 2 above.)Mt. Hope Project NPV breakeven and cash flow breakeven reflect General Moly’s 80% ownership in the project under the optional mine plan,

using a $15.00/lb molybdenum price over 24 years of mining and 30 years of mill processing at an 8% discount rate, after tax. Liberty Project NPV breakeven and cash flow breakeven use $15/lb molybdenum, $3.25/lb copper over 31 years of mining, 32 years of milling

and a discount rate of 8%, after tax. There is the potential to increase Liberty’s NPV and IRR by toll roasting Liberty molybdenum concentrates at the Mt. Hope Project once constructed, thereby decreasing total cash costs to $7.41/lb for the first 5 full years of production. 28

GMONYSE MKT

& TSX

General Moly Contacts

Headquarters

Lakewood, Colorado

(303) 928-8599

www.generalmoly.com

29

Bruce D. Hansen

Chief Executive Officer

bhansen@generalmoly.com

Lee Shumway

Chief Financial Officer

lshumway@generalmoly.com

Robert Pennington

Chief Operating Officer

rpennington@generalmoly.com