- The document is a presentation by Guyana Goldfields Inc. about its Aurora Gold Mine in Guyana. - It summarizes the company's operating and financial results for Q1 and Q2 2017, and provides production and cost guidance for the full year. It also discusses the mine expansion plans to increase production going forward. - Exploration targets near the mine and elsewhere in the company's large land package offer potential to discover additional gold deposits to extend the mine life.

1. August 2017
A SCARCE ASSET IN A TRUE
MINING DISTRICT

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This presentation of Guyana Goldfields Inc. (the "Company") contains
statements that constitute "forward-looking statements." Such forward-looking
statements involve known and unknown risks, uncertainties and other factors
that may cause our actual results, performance or achievements, or
developments in our industry, to differ materially from the anticipated results,
performance or achievements expressed or implied by such forward-looking
statements. Forward looking statements are statements that are not historical
facts and are generally, but not always, identified by the words "expects,"
"aims," "plans," "anticipates," "believes," "intends," "estimates," "projects,"
"potential" and similar expressions, or that events or conditions "will," "would,"
"may," "could" or "should" occur. Information inferred from the interpretation of
drilling results and information concerning mineral resource and mineral reserve
estimates may also be deemed to be forward looking statements, as such
information constitutes a prediction of what might be found to be present when
and if a project is actually developed. Forward-looking statements this document
include statements regarding: the Company's expectations regarding drilling
and exploration activities on properties in which the Company has an interest;
and the Company's statements regarding estimates of reserves and resources
on properties in which the Company has an interest.
There can be no assurance that such statements will prove to be accurate.
Actual results and future events could differ materially from those anticipated in
such statements, and readers are cautioned not to place undue reliance on
these forward-looking statements that speak only as of their respective dates.
Important factors that could cause actual results to differ materially from the
Company's expectations include among others, risks related to fluctuations in
mineral prices; uncertainties related to raising sufficient financing to fund
planned work in a timely manner and on acceptable terms; changes in planned
work resulting from weather, logistical, technical or other factors; the possibility
that results of work will not fulfill expectations and realize the perceived potential
of the Company's properties; uncertainties involved in the estimation of
resources and reserves; the possibility that required permits may not be
obtained on a timely manner or at all; the possibility that capital and operating
costs may be higher than currently estimated and may preclude commercial
development or render operations uneconomic; the possibility that the estimated
recovery rates may not be achieved; risk of accidents, equipment breakdowns
and labour disputes or
other unanticipated difficulties or interruptions; the possibility of cost overrun or
unanticipated expenses in the work program; the risk of environmental
contamination or damage resulting from the Company's operations; risks
associated with title to mineral properties; and other risks and uncertainties
discussed appear elsewhere in the Company's documents filed from time to
time with the Toronto Stock Exchange and Canadian securities regulators.
These statements are based on a number of assumptions, including
assumptions regarding general market conditions, the availability of financing for
proposed transactions and programs on reasonable terms, the cost of
exploration and development and the ability of outside service providers to
deliver services in a satisfactory and timely manner. Forward-looking statements
are based on the beliefs, estimates and opinions of the Company's
management on the date the statements are made. Except as expressly
required by applicable securities laws, the Corporation undertakes no obligation
to update these forward-looking statements in the event that management's
beliefs, estimates or opinions, or other factors, should change.
This presentation uses the terms "Inferred Resource", "Indicated Resource",
“Measured Resource” and "Mineral Resource". The Company advises readers
that although these terms are recognized and required by Canadian securities
regulations (under National Instrument 43-101 "Standards of Disclosure for
Mineral Projects"), the US Securities and Exchange Commission does not
recognize these terms. Readers are cautioned not to assume that any part or all
of the mineral deposits in these categories will ever be converted into reserves.
In addition, "Inferred Resources" have a great amount of uncertainty as to their
existence, and economic and legal feasibility. It cannot be assumed that any
part of an Indicated or Inferred Mineral Resource will ever be upgraded to a
higher category. Under Canadian rules, estimates of Inferred Mineral Resources
may not form the basis of feasibility or pre-feasibility studies, or economic
studies except for a Preliminary Assessment as defined and permitted under
National Instrument 43-101. Readers are cautioned not to assume that part or
all of an Inferred Resource exists, or is economically or legally mineable. The
Mineral Resources stated in this presentation are not Mineral Reserves and, in
the absence of a current feasibility study, do not demonstrate economic viability.
The determination of Mineral Reserves can be affected by various factors
including environmental, permitting, legal, title, taxation, socio-political, and
marketing issues.
FORWARD LOOKING STATEMENT

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 Cash position of US$65.4M vs. debt of US$68.8M as at June 30, 2017
 +20% annual production growth 2017 to 2018 via mill expansion from 5,600 – 8,000 tpdOrganic Growth
 High grade +200 average koz/yr Au producer with +15 years reserve life with upside
 Simple metallurgy and mine plan, positive grade reconciliation to date
 Exceptional free cash flow generation
A Scarce Asset
 No by-products
 Minimal currency exposure
 Oil price hedged for the near term up to 2019
100% Pure Gold
Exposure
 +200,000 acre land package in highly prospective & underexplored greenstone belt
 Targeting open pit exploration targets within a 30km radius from Aurora Mill
District Potential
Strong Balance
Sheet
INVESTMENT HIGHLIGHTS

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Proven and Probable Reserves Grade – Precious Metals Only (g/t Au equivalent)
Source: Company filings and BMO Capital Markets
Note: Includes precious metals, converted to AuEq grade using LT pricing of US$1,250/oz Au and US$18.00/oz Ag when not converted by the company.
(1)
(2)
(3)
WHAT STANDS US APART? Aurora is a High Grade Gold Mine
3.4
2.9
2.7
2.3 2.2
1.7
1.5 1.3 1.3 1.2 1.0 1.0
0.8 0.7 0.7 0.6
0.4
Median: 1.3 g/t
SEMAFO
Guyana
Torex
Alacer
Primero
Alamos
OceanaGold
B2Gold
IAMGOLD
Eldorado
Tahoe
Detour
New Gold
Kinross
Centerra
Silver Standard
Yamana

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2017 Performance: On Track To Meet Guidance
Q1 2017 Q2 2017 FY Guidance
Gold Produced (ounces) 40,900 29,700 160-180k
Cash costs per ounce – before royalty¹ ($/ounce) 516 757 500-550
All-in sustaining1 (“AISC”) ($ per ounce) 861 1,144 775-825
Cost of sales (prod, royalty and dep) ($/ounce) 827 1,164 800-850
Gold Sold (ounces) 40,700 30,000
Average Realized Gold Price US$/ounce 1,227 1,263
Gross Revenue (US$ mlns) 50M 38M
Ore mined (tonnes) 498,800 511,600
Waste mined (tonnes) 2,389,700 3,097,200
Total Mined (tonnes) 2,888,400 3,608,800
Strip ratio (waste:ore) 4.8 6.1
Tonnes mined per day 32,100 39,700
Ore processed (tonnes) 602,800 515,600
Tonnes processed per day 6,700 5,700
Head grade g/t Au 2.44 2.06
Recovery (%) 89.7 86.5
1 This is a non-IFRS measure. Refer to non-IFRS Performance Measures section in the latest MD&A
Excellent health, safety and environmental track record with +3,500,000
employee hours worked without a lost time incident !

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Q2: Weakness is in the Past and Non Recurring
• Lower Grade:
• Fed the mill with lower grade stockpiled ore along with a higher strip ratio.
• Non-Recurring: Stockpile was accumulated early on in the mine life when ore control
measures were still being fine tuned. Low grade stockpile has been depleted and the strip
ratio is expected to decline significantly in Q3 and Q4 based on mine sequencing as mining
shifts to higher grade ore within the Rory’s Knoll tonalite.
• Lower Recovery:
• Presence of organic material (timber shafts and support beams) associated with the historic
underground workings at Aleck Hill resulted in the preg-robbing of gold ore in the processing
circuit causing lower than expected gold recoveries.
• Non-Recurring: GGI is now close to mining below the level of the historic underground
workings and, hence, does not expect to encounter further organic material.
• Higher Costs:
• Lower grades, lower recoveries and a higher strip ratio resulted in higher costs.
• Higher mining costs due to a delayed delivery of two new drill rigs to site resulting in the
continued use of more expensive rental drills.
• Higher blasting costs due to a manufacturer delivery delay of bulk emulsion explosives to site
resulting in a shift back to more expensive packaged explosives.
• Non-recurring: All items and equipment arrived at site resulting in the full operation of the
two new drill rigs and bulk emulsion explosives being used starting in Q3 for all blasting
activities.

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Preliminary Q3 Performance: July
• For the month of July 2017, operational and cost performance trended favourably, as
expected.
• Gold production from July mining operations totalled approximately 12,100 ounces.
• Mine and mill performance was above budgeted levels with the mill having
processed an average of 6,032 tpd of ore at an average head grade of 2.21 g/t Au
with gold recoveries averaging 89.5%.
• Cost efficiency was further achieved at the beginning of the third quarter as the
Company commissioned two new drill rigs resulting in only minor reliance on the use
of more expensive rental drills. In addition, bulk emulsion explosives were being
used for all blasting activities post quarter end after a delay in the delivery of the
explosives from the manufacturer resulted in a shift back to more expensive
packaged explosives in the second quarter.

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1. This is a non-IFRS measure. Refer to non-IFRS Performance Measures section in the latest MD&A.
8
2017 Guidance: 2H/17 Higher Production & Lower Costs
• Lower end of the guidance range of 160,000 – 180,000 ounces of gold is
expected to be achieved.
• Due to mine sequencing, which envisions a significant increase in head grade
over the second half of the year, gold production is expected to be higher in
the second half of the year relative to the first half. In addition, stripping ratio is
expected to be materially lower in 2H/17.
• Due to the timing of sustaining capital expenditures, AISC¹ are expected to be
lower in the second half of the year relative to the first half.
2017 Guidance (@ $1,200/oz)
Gold production (ounces) 160,000 – 180,000
Cost of sales (production costs, royalty and
depreciation) ($ per ounce)
$800 - $850
Cash cost¹, excluding royalty ($ per ounce) $500 - $550
AISC¹ ($ per ounce) $775 - $825

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Mill Expansion: Phased Approach Internally Funded
Source: February 2017 NI-43 101 Technical Report
 Expected to increase production to +200koz/yr starting 2018
 Both phases are fully permitted and are expected to be funded internally

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Phase 1 Mill Expansion: On Schedule
 GGI engaged JDS Energy and Mining Inc. (“JDS”) to complete Phase 1 of the mill
expansion on an EPCM basis.
 Progress to date:
 Commencement of detailed engineering including finalizing the process flow
diagrams and process design criteria,
 Leach tank ring foundations are complete and thickener footings nearing
completion, and
 Ordering of long lead time items.

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400
450
500
550
600
650
700
750
800
850
0
50
100
150
200
250
300
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036
Operating cash cost (inclroyalty)
Recovered Ounces
Open Pit
Underground
Operating Cash Costs
(incl. royalty)
11
LOM: Recovered Ounces
Source: February 2017 NI-43 101 Technical Report

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SITE LAYOUT: Aurora Gold Mine

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MINING LOCATIONS

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RORY’S KNOLL: Pit

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AURORA GOLD MINE: Resource Growth Potential
Source: SRK, 2017

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 Expected completion by end of Q1 2018Phase 1
Mill Expansion
 Expected completion by mid-2019Phase 2
Mill Expansion
UPCOMING CATALYSTS
 Multiple brownfield and greenfield targetsExploration

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GUIANA SHIELD: Known Gold Region

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CUYUNI BASIN: A TRUE MINING DISTRICT: Looking for Mine #2
• 1 Operating Aurora Gold Mine
• 1 Sulphur Rose secondary resource
• Multiple near-mine saprolite targets
• 1,200 square km land package
• Long history of artisanal mining
• Highly prospective greenstone belt
Looking for Mine #2

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BROWNFIELDS EXPLORATION:
Gold Creek, Marupa & Iroma
Brownfields Exploration
• Near Mine Saprolite Targets:
• Gold Creek
• Gold Creek Laterite Target
• Marupa West:
• Anomalous soils on intrusive target
• Iroma:
• Largest geochem anomaly

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SULPHUR ROSE: A Mine In the Making
• 23 km from Aurora Mine in a straight line
• Nine (9) trenches were excavated in Q2’17 to
test a ground IP (induced polarization)
chargeability anomaly and airborne radiometric
anomalies northwest of the Sulphur Rose
deposit. Two (2) diamond drill holes were
drilled to test these anomalies. Results are still
pending.
• A regional soil sampling program along the
Sulphur Rose corridor is underway which will
cover an area of 36km² with a projected 3,400
samples to be collected. The soil program is
currently 80% complete.

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GREENFIELDS EXPLORATION: Wynamu
 A regional soil sampling
program is ongoing and nearly
complete covering a northeast
trending corridor from Kalaloo
to Wynamu.
 Ten (10) trenches with a total
length of 1,500 meters are
proposed for early Q3’17 to
test a series of gold anomalies
identified by deep auger
sampling.
 A ten (10) hole drill program is
proposed to test a significant
gold anomaly and trench
sampling with best results of
58m @ 1.21 g/t Au. This work
is expected to be commenced
in Q3’17 after access is
prepared.

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APPENDIX

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Symbol: TSX: GUY
Total Shares Outstanding 173,036,629
Options 6,371,684
Warrants 0
52 week: Hi/Lo C$9.68 / C$4.56
Market Cap (at C$ 5.10) C$882 million
Cash Balance (June 30, 2017) US$65.4 million
Debt (June 30, 2017) US$68.8 million
Top 10 Shareholders Shares %
The Baupost Group 20.6M 12.0%
Van Eck 20.2M 11.7%
Rafferty Asset Management 8.3M 4.8%
M&G Investment Mgmt 6.3M 3.6%
Patrick Sheridan Jr. (Founder) 6.0M 3.5%
Fiera Capital 5.4M 3.1%
Fidelity Investments 4.9M 2.8%
Franklin Resources (Templeton) 4.4M 2.5%
Oppenheimer 3.3M 1.9%
Sentry Investments 2.7M 1.5%
CORPORATE SNAPSHOT

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 Guyana is the only English speaking country in South America
 British common law and secure tenure - part of the Commonwealth
 Democratically elected government under parliamentary system
 Long history of significant gold production:
 Gold was the largest export of the country
 Royalty:
 5%: Gold price $1,000/oz or less
 8%: Gold price $1,000/oz +
 Corporate income tax:
 27.5% with no withholding tax on interest payments
MINING FRIENDLY JURISDICTION & GOVERNMENT

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Road Access to
Aurora
LOGISTICS & INFRASTRUCTURE

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Focus on health and safety of our employees, the well-being of our
community and the protection of the natural environment
Hiring in the region, giving priority to local communities:
 96% are Guyanese nationals
 Scholarship and job/skills training
Supporting local communities
 Local sourcing of goods and services
 Business opportunities
 Participation in municipal development
 Sustainable development initiatives in community
CSR AND SUSTAINABLE DEVELOPMENT

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FEASIBILITY STUDY LOM HIGHLIGHTS: February 2017
Gold Price (base case) US $1,200/oz
Total Gold Production (Recovered Gold) 3.3 Moz
15 Year Mine Life
OP 2017-2024
UG 2024 – 2031
Average Annual Production (LOM) 220,000 oz Au
Average Gold Grade (mill head) 3.02 g/t Au
Mill Throughput
2017 + 1Q18 5,600 tpd
2Q18 onwards 8,000 tpd
Gold Recovery
2017 91.3%
2018 (post Phase 1) 92.5%
2H19 onwards (post Phase 2) 94.0%
Strip Ratio (waste to ore) 8.4:1
LOM Cash Costs (with royalty) $612/oz
LOM AISC $747/oz
Expansion Capital Cost
Mill Phase 1 (2017 + 1Q18) $21 M
Mill Phase 2 (2018 + 1H19) $27 M
Mine Fleet (2018) $24 M
Underground Development Cost (Year 2022 – 2024) $129 M
Pre-Tax NPV (5% Discount Rate) $1,054 M
After-Tax NPV (5% Discount Rate) $850 M
Source: February 2017 NI-43 101 Technical Report

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Gold Price $1,200/oz Quantity (kt) Grade (g/t) Contained Gold (koz)
Proven Reserves
O/P Saprolite 336 1.60 17
O/P Rock 4,864 2.99 467
Total Proven 5,200 2.90 485
Probable Reserves
O/P Saprolite 2,934 1.91 180
O/P Rock 12,128 3.02 1,179
U/G Rock 16,519 3.19 1,694
Total Probable 31,580 3.01 3,053
Total P & P Reserves 36,781 2.99 3,538
Gold Price $1,300/oz Quantity (kt) Grade (g/t) Contained Gold (koz)
Measured & Indicated Resources
O/P 29,670 2.62 2,440
U/G 30,060 3.91 3,780
Total M&I Resources 59,730 3.25 6,250
Inferred Resource
O/P 4,770 1.57 230
U/G 11,810 4.12 1,570
Total Inferred Resource 16,580 3.79 1,790
MINERAL RESERVES & RESOURCES
Source: February 2017 NI-43-101 Technical Report
Source: February 2017 NI-43-101 Technical Report
1.Mineral Reserves are based on a gold price of
US$1,200 per ounce, 8% royalty and an
average metallurgical recovery of 96.0% for
saprolite and 94.0% for fresh rock material.
2.Open pit saprolite and rock reserves are
reported at a cut-off grade of 0.44 g/t Au and
0.42 g/t Au for vein and upper saprolite
material respectively. Open pit rock reserves
are reported at a cut-off grade of 0.76 g/t Au
and 0.64 g/t Au for vein and Rory’s Knoll rock
material respectively.
3.Underground fresh rock reserves are reported
at a cut-off grade of 1.5 g/t Au.
4.Mineral Reserves are contained within
Mineral Resources.
5.SRK is not aware of mining, metallurgical,
infrastructure, permitting, or other factors that
could materially affect the mineral reserve
estimates.
1. Mineral resources are inclusive of mineral
reserves. Mineral resources are not mineral
reserves and do not have demonstrated economic
viability. All figures have been rounded to reflect
the relative accuracy of the estimates.
2.Open pit mineral resources are reported at a
cut-off grade of 0.30 g/t for Saprolite and 0.40
g/t for Fresh rock respectively, and underground
mineral resources are reported at a cut-off grade
of 1.8 g/t. Cut-off grades are based on a price of
US$1,300 per ounce of gold and a gold
recoveries of 97 percent for saprolite and 94.5
percent for fresh material.
3.Mineral resources have been adjusted using the
2016 EOY topography, to account for open pit
mining to date, and include ore stockpile
inventories as of EOY 2016.

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FEASIBILITY HIGHLIGHTS: LOM Operating Costs
LOM Operating Costs Units January 2017
OP Mining US$/t $2.11
UG Mining (RK) US$/t $25.72
Processing cost per tonne US$/t $14.87
G&A cost per tonne US$/t $8.77
Cash Cost US$/oz $516
Cash Cost w/ Royalty US$/oz $612
All‐In Sustaining Cash Cost US$/oz $747
Source: February 2017 NI-43 101 Technical Report

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Geological Description
 Rory's Knoll mineralization: disseminated pyrite and gold mineralization associated with intense silica-fuchsite-
sericite-carbonate alteration in tonalite intrusive probably emplaced at the hinge of the folded volcanic rock and
metasediments.
 Mad Kiss mineralization: disseminated pyrite and gold mineralization associated with intense silica-fuchsite-
sericite-carbonate alteration in a quartz feldspar porphyry dyke.
 Aleck Hill mineralization: mesothermal gold veins hosted in the shear zones of metavolcanic and
metasedimentary rocks; occurs in a zone of pyrite-rich quartz-carbonate veins in volcanic rocks that are enclosed
in an alteration envelope which reportedly includes silica-sericite and calcite cement filling fractures.
GEOLOGY

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BOARD & SENIOR OFFICERS
Alan Ferry
Lead Director
 Geologist that has been Involved in the investment industry for over 28 years as a mining
analyst and a mining corporate finance specialist.
Patrick Sheridan Jr.
Founder, Executive
Chairman and Director
 Over 25 years of experience in the mining industry
 Has actively explored in Guyana since 1996 and is the founder of Guyana Goldfields and lead the
discovery of the Aurora and Sulphur Rose deposits
Scott A. Caldwell
President & CEO
and Director
 Mining engineer with 35+ years experience building and operating gold and base metal mines worldwide
 Former President, CEO and Director of Allied Nevada Gold Corp. from 2006 - 2013
Michael Richings
Director
 40+ years of development and operational experience in the resource sector. Mr. Richings is currently
the Chairman of the Board for Vista Gold, where he also served as CEO from 2007 to 2012
Rene Marion
Director
 25+ years of diversified management and senior technical experience with resource industry expertise in
operations, mineral exploration, and mine development, along with a successful history of corporate
development.
Wendy Kei
Director
 Chartered Professional Accountant and previously served as CFO of Dominion Diamond Corporation
(formerly Harry Winston).
Jean-Pierre Chauvin
Director
 40+ years of combined experience in mining operations and construction management.
David Beatty
Director
 25+ years of financial capital markets and resource management experience.
Daniel Noone
Director and
VP, Exploration
 Over 25 years of experience of international mineral exploration and development
 Former VP of Peru for Aquiline Resources
Paul J. Murphy
Executive VP,
Finance & CFO
 Over 40 years of financial experience and former Head of PricewaterhouseCoopers LLP Western’s
World Mining Practice

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Scientific and Technical Information
The qualified person for the mineral resource and reserve estimates and other scientific and technical information herein are as follows:
The compilation of the technical report in support of the 2017 feasibility study was completed by Tim Carew, PGeo, Robert McCarthy,
PEng, and Christopher Elliott, FAusImm. By virtue of their education, membership to a recognized professional association and relevant
work experience, Tim Carew, Robert McCarthy and Christopher Elliott are independent Qualified Persons as defined by National
Instrument 43-101. Tim Carew, Robert McCarthy and Christopher Elliott have reviewed, approved and verified the technical content within
this presentation. The qualified person for the other scientific and technical information in this presentation, is Daniel Noone, BApSci
(Geo), MBA, and has approved the contents of this presentation.
Technical and scientific information contained herein, including the mineral resource and reserve estimates relating to the Aurora Gold
Project is derived from the ““Independent Technical Report Updated Feasibility Study, Aurora Gold Mine Project, Republic of Guyana”
dated February 2, 2017 (the “Technical Report”). We have filed the Technical Report under our profile at www.sedar.com. For details of
the data verification procedures employed by the QPs and the key assumptions, parameters and methods used to estimate the mineral
resource and mineral reserve estimates, please see the Technical Report. For information about known legal, political, environmental, or
other risks that could materially affect the potential development of the mineral resources or mineral reserves, please see the Technical
Report.
Securities Laws
This presentation does not constitute an offer or solicitation to buy or sell any securities discussed herein in any jurisdiction where such
would be prohibited. This presentation is not an offer to sell, or a solicitation of an offer to purchase, any securities in the United States.
The securities referred to in this presentation will not be registered under the U.S. Securities Act of 1933 and may not be offered or sold in
the United States except pursuant to an exemption from the registration requirements of the U.S. Securities Act of 1933 and applicable
state securities laws.
The information contained in this presentation does not and is not intended to constitute a "valuation," "formal valuation," "appraisal,"
"prior valuation," or a "report, statement or opinion of an expert" for purposes of any securities legislation in Canada or otherwise.
Currency
Unless otherwise indicated, all dollar values herein are in United States dollars.
SCIENTIFIC, TECHNICAL AND SECURITIES INFORMATION

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Jacqueline Wagenaar
VP, IR & Corporate Communications
Tel: (416) 628 5936 x.5295
Email: jwagenaar@guygold.com