CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019

 
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CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
Denver Gold Forum | September 15-18, 2019

                           CREATING A LEADING
                      AFRICAN GOLD PRODUCER
NYSE AMERICAN: GSS | TSX: GSC                                           1
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
DISCLAIMER
SAFE HARBOUR: Some statements contained in this presentation are forward-looking statements or             In this presentation, we use the terms "cash operating cost per ounce", "All-In Sustaining Cost per
forward-looking information (collectively, “forward-looking statements”) within the meaning of the         ounce" and "AISC per ounce". These terms should be considered as Non-GAAP Financial Measures as
United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities          defined in applicable Canadian and United States securities laws and should not be considered in
laws. Investors are cautioned that forward-looking statements are inherently uncertain and involve         isolation or as a substitute for measures of performance prepared in accordance with International
risks and uncertainties that could cause actual results to differ materially. Such statements include      Financial Reporting Standards ("IFRS"). "Cash operating cost per ounce" for a period is equal to the
comments regarding: estimated gold production, cash operating costs, All-in Sustaining Costs and           cost of sales excluding depreciation and amortization for the period less royalties, the cash
capital expenditures for 2019; the expansion potential at Wassa and Prestea; ongoing investment to         component of metals inventory net realizable value adjustments and severance charges divided by
increase drill density, increase stope availability and expand development at Wassa; the sourcing of       the number of ounces of gold sold (excluding pre-commercial production ounces) during the period.
ore at Prestea in H2 2019; an expected grade increase at Prestea in H2 2019; underground                   ,"All-In Sustaining Costs per ounce" commences with cash operating costs and then adds sustaining
productivity mining rate and throughput being expected to increase at Prestea in H2 2019; open pit         capital expenditures, corporate general and administrative costs, mine site exploratory drilling and
production being expected to continue at a similar grade at Prestea during Q3 2019; completion of          greenfield evaluation costs and environmental rehabilitation costs, divided by the number of ounces
the refurbishing of the underground railway at Prestea in Q3 2019 resulting in improved throughput;        of gold sold (excluding pre-commercial production ounces) during the period. This measure seeks to
the installation of a new larger rock breaker at Prestea; the implementation of initiatives identified     represent the total costs of producing gold from operations. These measures are not representative
by CSA Global at Prestea; the conversion of Inferred resource to Indicated resource at Wassa Deep in       of all cash expenditures as they do not include income tax payments or interest costs. Changes in
H2 2019 and providing a Resource and Reserve update in early 2020; the timing of a decision on the         numerous factors including, but not limited to, mining rates, milling rates, gold grade, gold recovery,
Father Brown deposit; a resource update and assessment of project viability for Father Brown in Q3         and the costs of labor, consumables and mine site general and administrative activities can cause
2019; the Company’s anticipated debt maturity schedule; and the exploration upside of the Wassa            these measures to increase or decrease. We believe that these measures are the same or similar to
and Prestea Undergrounds. Factors that could cause actual results to differ materially include             the measures of other gold mining companies but may not be comparable to similarly totaled
timing of and unexpected events at the Prestea and/or the Wassa processing plants; variations in ore       measures in every instance. Please see our "Management's Discussion and Analysis of Financial
grade, tonnes mined, crushed or milled; delay or failure to receive board or government approvals          Condition and Results of Operations for the three and six months ended June 30, 2019" for a
and permits; construction delays; the availability and cost of electrical power; timing and availability   reconciliation of these Non-GAAP measures to the nearest IFRS measure.
of external financing on acceptable terms or at all; technical, permitting, mining or processing issues,
including difficulties in establishing the infrastructure for Wassa Underground or Prestea                 INFORMATION: The information contained in this presentation has been obtained by Golden Star
Underground, inconsistent power supplies, plant and/or equipment failures and an inability to              from its own records and from other sources deemed reliable, however no representation or
obtain supplies and materials on reasonable terms (including pricing) or at all; changes in U.S. and       warranty is made as to its accuracy or completeness. The technical information relating to Golden
Canadian securities markets; heavy rainfall and flooding of underground mines; and fluctuations in         Star's material properties disclosed herein is based upon technical reports prepared and filed
gold price and input costs and general economic conditions.                                                pursuant to National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101")
                                                                                                           and other publicly available information regarding the Company, including the following: (i) "NI 43-
There can be no assurance that future developments affecting the Company will be those                     101 Technical Report on a Feasibility Study of the Wassa Open Pit Mine and Underground Project in
anticipated by management. Please refer to the discussion of these and other factors in our Annual         Ghana" effective December 31, 2014; and (ii) "NI 43- 101 Technical Report on Resources and
Information Form for the year ended December 31, 2018 filed and available at www.sedar.com. The            Reserves, Golden Star Resources, Bogoso/ Prestea Gold Mine, Ghana" effective December 31, 2018.
forecasts contained in this presentation constitute management's current estimates, as of the date         Additional information is included in Golden Star's Annual Information Form for the year ended
of this presentation, with respect to the matters covered therein. We expect that these estimates          December 31, 2018 which is filed and available on www.sedar.com. Mineral Reserves were prepared
will change as new information is received and that actual results will vary from these estimates,         under the supervision of Dr. Martin Raffield, Senior Vice President Technical Services for the
possibly by material amounts. While we may elect to update these estimates at any time, we do not          Company. Dr. Raffield is a "Qualified Person" as defined by NI 43- 101. The Qualified Person
undertake to update any estimate at any particular time or in response to any particular event.            reviewing and validating the estimation of the Mineral Resources is Mitchel Wasel, Golden Star
Investors and others should not assume that any forecasts in this presentation represent                   Resources Vice President of Exploration.
management's estimate as of any date other than the date of this presentation.
                                                                                                           CURRENCY: All monetary amounts refer to United States dollars unless otherwise indicated.

                                                  NYSE AMERICAN: GSS | TSX: GSC                                                                                                                                 2
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
GOLDEN STAR SNAPSHOT
                                                                                                                                              AFRICA

      2019
                     Strong Cash Balance
   Production
                        $66.2 million 1
    Guidance
 190,000-205,000oz

   2019 AISC 2       Mineral Reserves &
    Guidance             Resources
                                                                                                  Prestea                 Wassa
  $1,100-1,200/oz       P&P 1.8 Moz                                                               Gold Mine               Gold Mine
                        M&I 5.9 Moz
                      Inferred 7.2 Moz                                                                       Father Brown             ACCRA
                                                                                                             Satellite Deposit

                                                                                                                       TAKORADI
                                                     1.   As at June 30, 2019.
                     NYSE AMERICAN: GSS | TSX: GSC   2.   See note on slide 2 regarding Non-GAAP Financial Measures.                               3
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
MARKET INFORMATION
Analyst Coverage                                         Key Institutional Shareholders            Ownership Breakdown 1
▪    Beacon Securities                                    La Mancha Holding              30%
▪    CIBC Capital Markets
                                                          CPMG Inc. (Condire)            7.5%
▪    Clarus Securities
▪    Desjardins Capital Markets                           Van Eck                        5.2%
                                                                                                            Retail/Other
▪    HC Wainwright & Co                                   Franklin Templeton             4.1%                   27%
▪    National Bank Financial                              Oppenheimer Funds              2.6%                                     Institutional
▪    Numis Securities                                                                                                                 43%
                                                          Renaissance Technology LLC     2.5%
▪    Scotiabank                                                                                                La Mancha
                                                          Invesco Advisers Inc.          2.4%                     30%
Market Information 1
                                                          Victory Capital Management     1.6%
                             NYSE American / TSX /        Konwave AG                     1.6%
 Markets
                                    GSE
                                                          Tocqueville Asset Management   1.4%   ▪ Strong support from the 30% strategic
                                  NYSE: GSS
                                                                                                  shareholder La Mancha, a proven and
 Tickers                          TSX: GSC
                                  GSE: GSR                                                        successful investor in the gold sector
                                                                                                ▪ Recently requested (and was granted) ability
 Shares in Issue                 109,141,742
                                                                                                  to increase their holding to 35%
 Options                          3,938,683
 Share Price (NYSE)                 $3.08

 Market
                                    $336m
 Capitalization
1.   As at August 29, 2019                                                                        1.   As at September 11, 2019

                                              NYSE AMERICAN: GSS | TSX: GSC                                                                       4
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
AN UNDERGROUND MINING COMPANY, OPERATING IN GHANA

Wassa:                       Wassa Southern Extension:       Father Brown:                 Across the Company:
▪ Golden Star’s Flagship     ▪ 47% increase in reserves      ▪ Drill data being analyzed   ▪ A culture where safety is
    Asset                        during 2019                     to determine next steps       never compromised
▪ Long life, low cost,       ▪ Rapidly approaching 4,000     Wassa:                        ▪ Working hard to ensure
    growing production           tpd throughput              ▪ 4 Drills running on             the best team and people
Prestea:                     ▪ Mill capacity of ~8,000 tpd       surface                       are in place
▪ Focus on near term         Prestea                         ▪ 4 Drills running            ▪ Setting clear goals to
    operational              ▪ High grade extension              underground                   reach intermediate
    improvements and             drilling results                                              producer status
    longer term mine plan    ▪ Opportunity to expand to
    redesign                     additional levels

                            NYSE AMERICAN: GSS | TSX: GSC                                                                 5
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
WASSA MINE QUICK FACTS
                                                                                Wassa Quick Facts (ON 100% BASIS)
                                                                                Ownership                                               90% GSR (Wassa) Ltd., 10%
                                                                                                                                        Ghana
                                                                                M&I Mineral Resources                                   3.4 Moz

                                                                                Inferred Mineral Resources                              6.4 Moz

                                                                                P&P Mineral Reserves                                    1.5 Moz

                                                                                Processing Plant                                        CIL (capacity 7,800 tpd)

                                                                                Gold Recovery                                           95.7%

                                                                                Mining Type                                             Underground (Longhole)
Wassa is in south-western Ghana, approximately 40 km from the                                                                           Ramp capacity 4,000 tpd
Prestea Gold Mine. Golden Star commenced production from the
surface operation at Wassa in 2005 and commercial production was                Production                                              2017A 137 koz
achieved at Wassa Underground on January 1, 2017. In early 2018,                                                                        2018A 150 koz
Wassa transitioned into an underground-focused operation.                                                                               2019E 150-160 koz

Wassa Underground has exploration upside through extension drilling             Cash Operating Cost(1)                                  2017A - $880
of B Shoot North, step out drilling on B Shoot South, step out drilling                                                                 2018A - $629
on the 242 Trend and the extension of the F Shoot. This work is                                                                         2019E - $600-$650
expected to increase the mine life of Wassa Underground in the short,
medium and long term.

                                                NYSE AMERICAN: GSS | TSX: GSC                      1.   See note on slide 2 regarding Non-GAAP Financial Measures.
                                                                                                                                                                     6
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
PRESTEA MINE QUICK FACTS
                                                                               Prestea Quick Facts (ON 100% BASIS)
                                                                               Ownership                                          90% GSR (Prestea/Bogoso) Ltd.,
                                                                                                                                  10% Ghana

                                                                               M&I Mineral Resources                              2.6 Moz

                                                                               Inferred Mineral Resources                         701 koz

                                                                               P&P Mineral Reserves                               317 koz

                                                                               Processing Plant                                   CIL (capacity 4,000 tpd)

                                                                               Gold Recovery                                      87.4%

                                                                               Mining Type                                        Underground (Alimak)
Prestea is in south-western Ghana, approximately 40 km from the                                                                   Shaft capacity 1,500 tpd
Wassa Gold Mine. Previously, production was being delivered from
the Prestea Open Pits and the Prestea Underground Gold Mine. In the            Production                                         2017A 130koz
second half of 2018, Prestea became an underground-focused                                                                        2018A 75koz
operation.                                                                                                                        2019E 40-45koz

Prestea Underground has exploration upside through the extension               Cash Operating Cost(1)                             2017A $632
and definition of the West Reef ore body, with the objective of                                                                   2018A $1,292
increasing the supply of high grade ore to the processing plant in the
                                                                                                                                  2019E $1,450-$1,650
near term. Other focuses of the exploration program include initial
testing of the Main Reef and South Gap areas, which have the
potential to add ore to the mine plan in the medium to long term.

                                               NYSE AMERICAN: GSS | TSX: GSC                      1.   See note on slide 2 regarding Non-GAAP Financial Measures.
                                                                                                                                                                    7
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
WASSA - FLAGSHIP ASSET
        NYSE AMERICAN: GSS | TSX: GSC   8
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
WASSA: 80,000 OUNCES PRODUCED IN H1 2019 AT 3,500 TPD OF ORE MINED
 Q2 2019 Results
                                                                                                                              42,910
 ▪   Underground material mined (ore + waste) increased over                             38,097          37,562                               37,356
     the quarter
 ▪   Slightly lower underground ore mined in Q2 2019 compared
     to previous quarter
       ▪ Ore mining rate affected by limited stope access in
            June
 ▪   Lower than planned grades encountered during the quarter
     in several stopes
                                                                                         Q3 2018         Q4 2018             Q1 2019          Q2 2019

        3.6                  3.8           4.3                                                              Gold Production (ounces)
                                                                3.5

                                                                                                               Q2 2019            Q1 2019       Q2 2018
          4,203                4,335         4,255               4,289        Ore Mined UG         kt             312,115         326,747       238,953
     3,406                3,364         3,631               3,430
                                                                              Grade Mined UG       g/t              3.51               4.31       4.99
                                                                              Ore Processed        kt             364,901         366,790       375,932
      Q3 2018              Q4 2018       Q1 2019             Q2 2019
                                                                              Recovery             %                95.9               95.6       96.1
      UG Ore Mining rate (tpd)             UG Ore + Waste Mining rate (tpd)
      UG Gold Grade mined (g/t)                                               Gold Produced        oz              37,356          42,910        38,532

                                       NYSE AMERICAN: GSS | TSX: GSC                                                                                      9
CREATING A LEADING AFRICAN GOLD PRODUCER - Denver Gold Forum | September 15-18, 2019
WASSA: COSTS IMPACTED BY LOWER PRODUCTION

Costs                                                                                                                                                                    991
                                                                                                                          946
▪      Cash operating       and   costs(1)             AISC(1)
                                    per oz impacted by the lower
                                                                                                        807
       production during Q2                                                                                                                       760

▪      Underground mining and processing costs per tonne stable                                         613               614
                                                                                                                                                                         656
                                                                                                                                                  552
       quarter over quarter
Outlook
▪       The grade and mining rate are expected to stay at similar levels for
        the rest of the year
▪       Revised 2019 Guidance:
         ▪ Production: 150,000 to 160,000 ounces (from 170,000 to                                     Q3 2018           Q4 2018               Q1 2019               Q2 2019

              180,000 ounces)                                                                                     Cash Operating Costs (US$/oz)          AISC (US$/oz)
         ▪ Cash operating costs(1): $600/oz to $650/oz (from $560/oz
              to $600/oz)
         ▪ AISC(1): $880/oz to $940 per oz (original guidance not                                                                   Q2 2019             Q1 2019           Q2 2018
              disclosed)
                                                                                           UG Mining Cost             $/t ore            40               37                   38
                                                                                           Processing Cost            $/t ore            22               21                   22
                                                                                           G&A Cost                   $/t ore            10               10                   12
                                                                                           Cash Operating Costs        $/oz             655              552                   610
1.   See note on slide 2 regarding Non-GAAP Financial Measures.                            AISC                        $/oz             941              760                   994

                                                           NYSE AMERICAN: GSS | TSX: GSC                                                                                            10
WASSA: INCREASING VOLUME

                                                           N                                                                                   S
Outlook
▪   Ongoing investment to increase drill density to
    anticipate lower-grade stopes and sequence them
    accordingly
     ▪ Target 12 months of definition drilling                                                                     Mined out pits
           available
     ▪ 26,000 m of definition drilling to be
           completed in H2 2019
▪   Ongoing investment to increase stope availability
    Paste plant construction to start in H2 2019
     ▪ Commissioning expected in H2 2020
     ▪ Capital cost: $23 million
     ▪ Operating cost: $5-7 per tonne
▪   Ongoing investment to expand development to get
    to 5,000 tpd
      ▪ Strengthen mining fleet: purchase of                   In Grey, mined out stopes/pits and H1 2019 definition drilling
                                                               In Blue, stopes and development for H2 2019
           loaders, jumbo, 60t trucks

                                                                                                                           1,100 m

                                                                                                                     Wassa long section

                                       NYSE AMERICAN: GSS | TSX: GSC                                                                      11
PRESTEA - OPERATIONAL REVIEW UNDERWAY
         NYSE AMERICAN: GSS | TSX: GSC   12
PRESTEA: MINING RATE STABLE, GRADE REMAINS THE FOCUS
Q2 2019 Production Results                                                               19,016

▪    Open pit grade and throughput higher than previous quarter
      ▪ Improved grade reconciliation during the quarter
      ▪ Low strip ratio (1.4:1)                                                                        11,284
                                                                                                                             10,374
                                                                                                                                              11,065
▪    Underground mining rate slightly lower than previous quarter
      ▪ Rock breaker upgrade in June impacted skipping for 15 days
      ▪ Adjusted underground mining rate of 489 tpd excluding rock
          breaker downtime
▪    Underground grade lower than previous quarter
      ▪ Ore sourced from stopes with low grade                                          Q3 2018        Q4 2018               Q1 2019          Q2 2019
      ▪ Ongoing high level of dilution                                                                     Gold Production (ounces)

        10.4
                                  8.6
                                              6.3
                                                                                                                Q2 2019           Q1 2019      Q2 2018
                                                                      4.1
                                                                                   Ore Mined
                                                                                                       kt       195,455           83,385        76,920
                                                                                   (Open Pit and UG)
                                                                                   Ore Processed       kt       211,873          134,332       373,599
                                                                        489                                      4.1 UG           6.3 UG       13.6 UG
                                        430                     408                Grade Processed     g/t
      376
                            322
                                                                                                                 1.6 OP           1.3 OP        2.3 OP
                                                                                   Recovery            %           83.2                87.4       88.0

       Q3 2018               Q4 2018     Q1 2019                 Q2 2019           Gold Produced       oz        11,066           10,374        22,677
            UG Ore Mining rate (tpd)          Adjusted UG Ore Mining rated (tpd)
            UG Gold Grade mined (g/t)
                                        NYSE AMERICAN: GSS | TSX: GSC                                                                                    13
PRESTEA: WASTE ZONES CONTINUED TO AFFECT THE GRADE MINED
Q2 2019 Production Results
▪    Q2 ore sourced from S2, S4, S6, S8 and S9                                                                  Waste zones identified with definition drilling
▪    Low grade in those stopes due to:
      ▪ Waste zones not identified beforehand due to
           lack of definition drilling
      ▪ High dilution related to limited QAQC on long hole          21 Level
           drilling and blasting and stope height
Outlook
▪    Definition drilling at 25x25 m spacing completed
     between 21 and 24 level
       ▪ Introduced finger raising and shorter raises to
            work around the waste zones
       ▪ Drilling has been deferred to 2020 to help with
            cash burn
▪    Positive results observed from QAQC implemented on
     long hole drilling and blasting from S9 and onwards
▪    Waste from 17L skipped separately from ore since May
     to improve dilution                                            24 Level
       ▪ Looking at similar options for 24L
▪    For H2 2019, ore to be sourced from S9, S11, S12, S13,                    Prestea Alimak stopes with status as of June 30th, 2019
     S14 and development ore
       ▪ Grade expected to improve

                                    NYSE AMERICAN: GSS | TSX: GSC                                                                                    14
PRESTEA: COSTS IMPACTED BY UNDERGROUND GRADE AND VOLUME
Costs
▪   Costs impacted by low production grade and below target throughput                                                       2,120                                             2,143
     ▪     Largely fixed cost at Prestea Underground                                                                                                  1,865
     ▪     Cost very sensitive to grade
                                                                                                                             1,867
Outlook                                                                                             1,363                                                                      1,677
▪   Underground productivity, mining rate and throughput expected to increase for H2                                                                  1,463

    2019, with rock breaker, railway and ventilation raise work completed                           1,110
▪   Open pit production expected to continue at similar grade during Q3
▪   Revised 2019 Guidance:
     ▪    Production: 40,000 to 45,000 ounces (from 50,000 to 60,000)
     ▪    Cash operating costs (1): $1,450/oz to $1,650/oz (from $840/oz to $1,000/oz)
     ▪    AISC (1): $1,900/oz to $2,150/oz (original guidance not disclosed)                      Q3 2018                  Q4 2018                  Q1 2019                   Q2 2019
▪   Focus on cost reductions to minimize cash outflows
                                      Q2 2019       Q1 2019       Q2 2018                                        Cash Operating Costs (US$/oz)                AISC (US$/oz)

                            $/t                                                          Projects
    UG Mining Cost                     191          191           276
                            ore                                                          ▪      60% of the underground railway refurbished during the quarter
                            $/t                                                                  ▪    80% to be refurbished by end of Q3 2019
    Processing Cost                    30            36            22                            ▪    Reliable railway will improve throughput
                            ore
                                                                                         ▪      Underground rock breaker and tipping area upgraded
                            $/t                                                                  ▪    Rock breaker responsible for significant downtime in Q1 2019
    G&A Cost                           22            14            10
                            ore                                                                  ▪    Better availability observed since installation in early June
    Cash Operating Costs   $/oz       1,677        1,463         1,149                           ▪    New larger rock breaker to be installed in coming month to
                                                                                                      handle higher volume
    AISC                   $/oz       2,143        1,865         1,293
                                                                                         1.   See note on slide 2 regarding Non-GAAP Financial Measures.
                                         NYSE AMERICAN: GSS | TSX: GSC                                                                                                                  15
PRESTEA: INDEPENDENT REVIEW OBSERVATIONS

OBSERVATIONS                                                   INITIAL RECOMMENDATIONS AND NEXT STEPS
Well established operation                                     Aug 2019 – Feb 2020 - Prioritisation and implementation of low-cost quick win initiatives
▪    Resource model aligned with standard Industry             ▪       Increase definition drilling to provide accurate information on reef location and grade distribution
     Practice                                                          within the reef
▪    Processing plant well adapted to lower throughput         ▪       More than 100 low-cost initiatives identified by CSA, including:
▪    Competent workforce                                                 ▪      Develop geotechnical block model
▪    Highly prospective land package                                     ▪      Improve supervision, implement KPIs and management operating system
▪    Multiple upside options                                             ▪      Purchase critical small equipment (e.g. forklift) for Alimak installation and supervision
Lower grade than planned: Excessive dilution & ore loss        ▪       Run a workshop on site to prioritize and cost initiatives
▪   Insufficient geological and geotechnical data              ▪       Initiatives to be implemented by the operational team supported by a dedicated project team
▪   Poor definition of reef position                           Oct 2019 – Implementation of long-term plan
▪   Inadequate alignment of Alimak raises to reef position
▪   Low QAQC on long hole drilling and blasting                ▪       Establish whether existing or modified Alimak mining is appropriate
▪   Lack of geotechnical expertise                             ▪       Assess whereas to introduce a complementary mining method to bring additional flexibility (trade
                                                                       off review)
Lower productivity than planned
                                                               ▪       Revise production and cost targets
▪   Alimak raise length (150-160 m) contributing        to
    poor geotechnical conditions                               Feb 2020 - Improvements embedded and new plan starting to deliver
▪   Low equipment mechanical availability
▪   Lack of access to top level

                                       NYSE AMERICAN: GSS | TSX: GSC                                                                                                16
EXPLORATION
        NYSE AMERICAN: GSS | TSX: GSC   17
WASSA DEEP: EXTENDING MINERALISATION by 200m
                                                 2,000 m
                                                                                                                                   Q2 2019 Results

                                                          19400N
                                                          19350N

                                                                   19200N

                                                                            19000N
                                                                                     18900N

                                                                                              18700N

                                                                                                       18500N
N                        Mined out pits                                                                            S               ▪   Four rigs on site, 27 holes and 23,271 m drilled in H1 2019
                                                                                                                                   ▪   High grade mineralization extended 200 m south of the known
                                                                                                                                       mineralization
                                                                                                                 BSDD19-394D2           ▪ Deposit remains open to the south and at depth
                                                                                                                 22.7m @ 8.9 g/t
                                                                                                                                   ▪   Improved understanding of the orebody thanks to infill drilling
                                                                                                                 BS18DD394D1            ▪ Confirmed continuity of the deposit grade and thickness
                                                                                                                13.9m @ 3.2 g/t         ▪ Newly converted Indicated resources expected to
                                                                                                                17.6m @ 34.1 g/t
                                                                                                                15.7m @ 4.1 g/t               increase mine life
               BSDD19004
             14.8m @ 2.6 g/t                                                                                      BSDD19-400M      Outlook
                                                                                                                 19.5m @ 5.4 g/t
1,500 m

             BSDD19-396D1
             14.3m @ 6.2 g/t
                                                                                                                                   ▪   Focus on infill drilling to convert Inferred resource to Indicated
                                        BSDD19-394D3                                                                                   resource in H2 2019
             BSDD19-396D2               15.9m @ 4.5 g/t
             25.6m @ 4.1 g/t                                                                                                             ▪ 1,500 m to 2,000 m drilling remaining for 2019
                                       BSDD19-388D3                                                                                      ▪ Potential to increase mine life
                                       25.2m @ 3.3 g/t
                                                                                                                                   ▪   Resource and Reserve update early 2020

                                                                                                                 OPEN
                                       4.3m @ 12.2 g/t
                                        29m @5.5 g/t                                                                               ▪   Further work on defining geological structures
                                        6m @12.6 g/t
                                       8.4m @ 6.5 g/t

                                       BSDD19-388D3
                                       32.5m @ 5.3 g/t
                                       4.8m @ 5.7 g/t
                                                                                      OPEN                       BS18DD392D3
                                                                                                                12.8m @ 2.1 g/t
          All drill holes represent H1 2019 drilling
                                                                                                                22.4m @ 2.5 g/t
                                                                                                                7.7m @ 3.7 g/t

                                                       NYSE AMERICAN: GSS | TSX: GSC                                                                                                           18
WASSA BROWNFIELD: HIGHLY PROSPECTIVE TARGETS ALONG THE TREND
CLOSE TO HAUL ROAD                             Wassa Plant
     SAK & Ballyebo Prospects                                               Capacity: 7,800 tpd
                                                                            Current utilization: ~3,500 tpd

                                                                                                                   Existing GSR Haul Road
                                                                                                              85 km long from Wassa to Father
                SAK                                                                                           Brown

                               Wassa Main
Ballyebo
                                                                                    Chichiwelli
                                                                            Indicated Resources: 52 koz
                                                                            (850 kt at 1.9 g/t)

                                                                                                    Benso
                                                                            Indicated Resources: 112 koz (1,200 kt at 2.9 g/t)
           Abada & Apotunso Prospects                                       Under pit intercept 15.5 m at 6.2 g/t
      Veining similar to Prestea
      Historical intercepts including 8 m
      at 5.48 g/t                                                               Father Brown
                                                                            See next slides

                                            NYSE AMERICAN: GSS | TSX: GSC                                                              19
FATHER BROWN COMPLEX: HIGH GRADE SHOOT EXTENDED by 200m
                                                                     ▪   Potential ore feed to utilize available capacity at Wassa
                                                                         plant located 85km north of the Father Brown Complex
                                                                     ▪   Infrastructure available on site
                                                                     ▪   Two high grade underground structures identified,
                                                                         Adoikrom and Father Brown

                                                                     Q2 2019 Results
                                                                     ▪   Improved understanding of the orebody:
                                                                           ▪    ADK structure interpreted as being the primary gold
                                                                                bearing fluid pathway
                                                                           ▪    Focus drilling on ADK
                                                                     ▪   ADK high grade shoot confirmed by recent drilling
                                                                           ▪    200m extension identified, with a 8.1 m intersect
                           Tonnage                                              grading 8.7 g/t, 825 m below surface
                             (kt)      Grade (g/t)    Gold (koz)     ▪   Assay results received and will be released once resource
Father Brown   Indicated    656           8.67            183            update and ENTECH independent evaluation is completed
                                                                     ▪   Decisions on further drilling anticipated to be made in 2020
               Inferred     997           5.44            174            or sooner
Adoikrom       Indicated    327            5.3            55         Outlook
               Inferred     1,316          7.1            300        ▪   Next resource update expected early Q4 2019
Total          Indicated    982            7.5            238              ▪    28 holes drilled since the last resource update (Dec
                                                                                2018)
               Inferred     2,313          6.4            475        ▪   Project viability currently being assessed
                                                                           ▪    Results will drive future drilling decisions
                                     NYSE AMERICAN: GSS | TSX: GSC                                                                      20
PRESTEA – HIGH GRADE EXTENSION DRILLING RESULTS
                                               ▪   25 x 25 m infill drilling completed on the North extension, further
                                                   indicated resources in this area are anticipated to be converted to
                                                   reserves
                                               ▪   Opens additional exploration targets
                                               ▪   Potential addition to the resources and reserves on 24L

               NYSE AMERICAN: GSS | TSX: GSC                                                                       21
CORPORATE RESPONSIBILITY
        NYSE AMERICAN: GSS | TSX: GSC   22
CORPORATE RESPONSIBILITY & HEALTH AND SAFETY
LEADING PRACTICE
                                                                  LOCAL CONTENT
▪ Featured in UN Global Compact Canada Leading Practice
  Guide Sustainable Development Goal (SDG) 1,3 & 81               ▪   Employees 30% host community and 98% Ghanaian
▪ Over 250 workforce safety champions                             ▪   Contractors 74% host community
▪ Oil palm plantation supports over 700 families
▪ Featured in UN Global Compact Canada Leading Practice           PARTNERSHIP
  Guide SDG 1 & 8                                                 ▪   Community agreements in development for Wassa operations
                                                                  ▪   World Environment Day celebrations
LEADERSHIP & PERFORMANCE
▪   93% of leaders completed leadership training                  WORLD GOLD COUNCIL
▪   10 safety standards developed by workforce
▪   TRIFR of 1.19 in line with peer group                         ▪   Golden Star is a member of the World Gold Council (“WGC”)
▪   Near miss reporting 2.5 times better than 2017                ▪   10 Responsible Gold Mining Principles (“RGMPs”) were recently
▪   Systems enhanced                                                  disclosed by the WGC which are aligned with the approach
▪   No reportable environmental incidents                             Golden Star carries out its business:
▪   100% conformance to statutory monitoring and                         1. Ethical conduct
    regulatory guidelines                                                2. Understanding our impacts
                                                                         3. Supply chain
MALARIA                                                                  4. Safety & Health
▪   Least cases in 7 years                                               5. Human rights & conflict
▪   Order of magnitude better than background                            6. Labour rights
▪   Case rates just 0.35 per capita                                      7. Working with communities
                                                                         8. Environmental stewardship
                                                                         9. Biodiversity, land use & mine closure
                                                                         10. Water, energy and climate change
                                  NYSE AMERICAN: GSS | TSX: GSC                                                                                                                    23
                                                                      1.   Details available on the Company website , or here http://www.gsr.com/responsibility/SDG/default.aspx
WRAP-UP
▪ Proven focus on responsible mining recognized with several industry awards
  in Ghana and internationally

▪ Two operating assets and significant landholding in highly prospective,
  under explored proven Ashanti gold belt

▪ Wassa: underground deposit in excess of 5.6 Moz of Inferred and 1.7 Moz
  of M&I Mineral Resources with estimated 2019 production of 150-160 Koz
  with significant growth potential

▪ Prestea: high grade underground deposit with current operational review
  underway to improve performance and return to free cash generation

▪ Optionality from other satellite deposits, including Father Brown, to utilize
  latent installed processing capacity at both sites

▪ Long track record of operating successfully in Ghana, a well developed and
  stable mining jurisdiction in West Africa with excellent relationships with
  our stakeholders

▪ New COO with extensive underground mining expertise

                                NYSE AMERICAN: GSS | TSX: GSC                     24
                                                                                  24
THANK YOU – Q&A

CONTACT US
Tania Shaw, VP, Investor Relations &
Corporate Affairs
+1.416.583.3800
investor@gsr.com

NYSE American: GSS
TSX: GSC

                            NYSE AMERICAN: GSS | TSX: GSC   25
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