Teranga Gold Reports Positive Feasibility Study for Banfora Project

Criteria

JORC Code explanation

Commentary

Sampling techniques

• Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.
• Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.
• Aspects of the determination of mineralisation that are Material to the Public Report.
• In cases where 'industry standard' work has been done this would be relatively simple (eg 'reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay'). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information.

• Representative samples were from RC and core drilling.
• Drill core was sawn in half over defined sampling intervals, then one half sampled and assayed for gold. Oriented core markings were used as guides for sawing. RC chips were riffled and split following standard operating procedures.
• All core and RC chips were sampled along the entire hole to determine the nature of mineralisation and relationship to logged lithology, alteration and structure. Based on the detailed sampling results, mineralisation zones were defined.
• Industry standard practices have been utilized for all sampling and analytical procedures. No unusual commodities or mineralization types occur in any of the Banfora deposits.

Drilling techniques

Drill sample recovery

• Method of recording and assessing core and chip sample recoveries and results assessed.
• Measures taken to maximise sample recovery and ensure representative nature of the samples.
• Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material.

• Diamond core recoveries were measured and recorded for each sample. Core was sampled on nominal 1 m intervals. RC chip samples were collected on 1 m intervals. RC chip recoveries were based on qualitative visual estimates (poor, medium or good). Chip sample recoveries were not calculated but estimated based on the weight of the total samples.
• RC drill contractors have been requested to allow for sufficient air and appropriate technique to ensure dry samples are delivered >95% of the time. In instances where water ingress is unavoidable, damp or wet samples are dried prior to being split. There has not been a significant issue with sample (RC or core) recovery in either oxide or fresh rock.
• A relationship does not appear to exist between sample recovery and grade as there is no significant loss of material.

Logging

• Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies.
• Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography.
• The total length and percentage of the relevant intersections logged.

• Core samples were geologically and geotechnically logged following established standard operating procedures and includes sufficient and appropriate detail to support Mineral Resource estimation, mining and metallurgical studies. RC chip samples were geologically logged following established standard operating procedures and considered to be appropriate for use in Mineral Resource estimation.
• Logging is qualitative in nature. All core and RC chip trays are photographed.
• All diamond drill core has been geologically and geotechnically logged. All RC chips have been geologically logged.

Sub-sampling techniques and sample preparation

• If core, whether cut or sawn and whether quarter, half or all core taken.
• If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry.
• For all sample types, the nature, quality and appropriateness of the sample preparation technique.
• Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples.
• Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling.
• Whether sample sizes are appropriate to the grain size of the material being sampled.

• Drill core sampling intervals were defined then cut in half with a diamond saw along the core length using oriented core markings when available. Where oriented core was not available, the core orientation was estimated prior to cutting. Half core was sampled over one metre lengths or occasionally, based on lithology intervals.
• Dry RC cuttings were sampled on one metre intervals for each metre drilled. The one metre interval cuttings were passed through a three-tier, one-eighth riffle splitter resulting in an approximately 2.0 kg to 2.5 kg subsample.
• Sample preparation was carried out at the BIGS Global Burkina SARL laboratory located in Ouagadougou. Mining licence core and RC samples were dried and crushed to 6 mm. RC samples were then quartered and reduced in a Rocklabs splitter. Core samples were not reduced. Both RC and core samples were then pulverized to 70-75 um. A 200 gram sample was sent for analysis with the remainder of the sample stored for future needs.
• Core was sawn in half along the core axis for nominal 1 metre sample intervals, with one half of the core sent for assay. One duplicate pulp sample was inserted into the sample stream for a minimum of every 20 samples. Field duplicate samples were inserted into the sample stream at a ratio of 1 to 20 samples.
• Based on the characteristics of gold mineralisation in these deposits and results from the QA/QC program and sample duplicates, the nominal 1 metre sample interval is determined to be appropriate.

Quality of assay data and laboratory tests

• The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total.
• For geophysical tools, spectrometres, handheld XRF instruments, etc, the parametres used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc.
• Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established.

• All Banfora samples were analyzed at the BIGS laboratory in Ouagadougou, Burkina Faso for gold by fire assay with an atomic absorption finish using 50 gram samples. This analytical methodology is deemed appropriate for the nature of the deposits being evaluated.
• Not applicable.
• Blind Quality Assurance/Quality Control programs consisted of inserting blanks, duplicates and certified reference materials (CRM) into the sample stream at a rate of one for every 20 samples. All samples utilized in the resource estimation process returned results within acceptable limits. In the event of analytical failures for any of the CRM inserted materials, re-runs of the entire affected sample batches are undertaken and failed batches are replaced.

Verification of sampling and assaying

• The verification of significant intersections by either independent or alternative company personnel.
• The use of twinned holes.
• Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols.
• Discuss any adjustment to assay data.

• Data verification was conducted on an ongoing basis by internal in-house Company personnel.
• Twinned holes are occasionally drilled where structural information is required in areas where RC drilling had occurred.
• Drill hole logs were entered into Excel spreadsheets on Panasonic Toughbook computers, then uploaded into an MS Access database. Assay data was received from the laboratories in csv format and merged into the master database, with access restricted to the database manager. Routine validation checks were run in MS Access as well as Micromine software.
• No adjustments were made to assay data returned from the laboratory.

Location of data points

• Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.
• Specification of the grid system used.
• Quality and adequacy of topographic control.

• Drill hole collars are surveyed using either a Total Station or Differential GPS, both of which are capable of providing three-dimensional collar coordinates to sub-metre accuracy.
• All drill holes at each of the deposits were surveyed in WGS84 UTM Zone 28 North coordinates.
• Surveyed collars located on the Mine Lease property, were tied into established control points. The quality and adequacy of topographic control was considered to be reasonable for use in resource estimation.

Data spacing and distribution

• Data spacing for reporting of Exploration Results.
• Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.
• Whether sample compositing has been applied.

• Drilling is nominally on a 40 m by 40 m spacing, with closer spaced in-fill holes at a minimum spacing of 6 m to 10 m locally..
• Geological interpretation based on the drill spacing has identified continuity of geology and grade and is determined to be sufficient for estimating Mineral Resources and Mineral Reserves. Experimental variograms generated for mineralized zones with sufficient data, have confirmed the grade continuity ranges based on the drill hole spacing.
• RC chips and diamond drill core were sampled on nominal 1 metre intervals down the hole, and assayed. Sample compositing was not applied.

Orientation of data in relation to geological structure

• Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type.
• If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.

• Drill hole azimuths and dips have been oriented perpendicular to the interpreted mineralized zones in order to intersect the true widths of the zones as closely as possible. Occasionally, drilling was planned at oblique angles when the mineralisation trends were not yet well defined or if the optimal collar location was not accessible. Generally, the majority of drilling is oriented such that the sampling of mineralisation is unbiased.
• The small percentage of holes oriented oblique to the mineralisation are located in areas with sufficient drill density oriented perpendicular to mineralisation, and will not introduce a sampling bias.

Sample security

Audits or reviews

Criteria

JORC Code explanation

Commentary

Mineral tenement and land tenure status

• Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings.
• The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area.

1. Wahgnion Mining License : Decree N ?2014-675, amended by Decree N ?2015-092, located in Niankorodougou and Dakoro, Province of L?(C)raba in the Cascades region, owned 89.8% by Soci?(C)t?(C) Mini??re Gryphon SA, 10% by the Government of Burkina Faso and two (2) nominative shareholders.
2. Nianka II Exploration Permit: Decree No ? 16/233, located in the Province of L?(C)raba, owned 100% by Gryphon Minerals Burkina Faso Sarl
3. Dierisso II Exploration Permit: Decree No ?16-234, located in the Province of L?(C)raba, owned 100% by Gryphon Minerals Burkina Faso Sarl
4. Nogbele II Exploration Permit: Decree No ?16/235, located in the Province of L?(C)raba, owned 100% by Gryphon Minerals Burkina Faso Sarl
5. Zeguedougou II Exploration Permit: Decree No ?16-236, located in the Province of L?(C)raba, owned 100% by Gryphon Minerals Burkina Faso Sarl
6. Nogbele Sud Exploiration Permit: Decree No ?16-042, amended by Decree No ?17-009, located in the Province of L?(C)raba, owned 100% by Gryphon Minerals Burkina Faso Sarl

• Sanembaore Sarl Pty Ltd owns a 1% Net Smelter Royalty from all sales revenue derived from the Banfora tenements under the terms of a sale agreement dated November 12, 2007, amended on May 22, 2008, between Teranga Gold (Australia) Pty Ltd (previously Gryphon Minerals Limited) and Sanembaore Sarl Pty Ltd.
• Both the Banfora Mining Licence and the Regional Exploration Permits are considered secure

Exploration done by other parties

• Prior to Teranga's acquisition of the Banfora Gold Project in October 2016, exploration work on the Banfora Mining Licence and Regional Exploration Permits was conducted by Gryphon Minerals Limited.

Geology

Drill hole Information

• A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes:
• easting and northing of the drill hole collar
• elevation or RL (Reduced Level - elevation above sea level in metres) of the drill hole collar
• dip and azimuth of the hole
• down hole length and interception depth
• hole length.
• If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case.

Data aggregation methods

• In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated.
• Where aggregate intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail.
• The assumptions used for any reporting of metal equivalent values should be clearly stated.

Relationship between mineralisation widths and intercept lengths

• These relationships are particularly important in the reporting of Exploration Results.
• If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported.
• If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (eg 'down hole length, true width not known').

Diagrams

Balanced reporting

Other substantive exploration data

Further work

• The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling).
• Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive.

Criteria

JORC Code explanation

Commentary

Database integrity

• Measures taken to ensure that data has not been corrupted by, for example, transcription or keying errors, between its initial collection and its use for Mineral Resource estimation purposes.
• Data validation procedures used.

• Drill hole logs were entered into Excel spreadsheeets on Panasonic Toughbook computers, then uploaded into an MS Access database. Assay data was received from the laboratories in csv format and merged into the master database, with access restricted to the database manager.
• Routine validation checks were run in MS Access as well as Micromine software.

Site visits

• Comment on any site visits undertaken by the Competent Person and the outcome of those visits.
• If no site visits have been undertaken indicate why this is the case.

Geological interpretation

• Confidence in (or conversely, the uncertainty of ) the geological interpretation of the mineral deposit.
• Nature of the data used and of any assumptions made.
• The effect, if any, of alternative interpretations on Mineral Resource estimation.
• The use of geology in guiding and controlling Mineral Resource estimation.
• The factors affecting continuity both of grade and geology.

• Geological interpretation is based on geological plan maps at surface and at depth, and surface holes drilled on a nominal 40 m by 40 m spacing. In addition, structural studies were used to interpret geological and structural trends. Locally, closer spaced drill holes confirm the geological interpretation and continuity of grade and geology in the mineralized zones. Gold mineralisation is structurally controlled, with the location and trend of the mineralized structures reasonably defined.
• Geology and grade continuity are affected by local variations in folding, faulting, thinning and widening of zones.
• Wireframe models were generated around zones with similar geology, alteration and grade characteristics following interpreted geology and structural trends, and treated as hard boundaries for resource estimation.

Dimensions

• The extents of the Mineral Resources vary for each deposit and follow various structural and geological trends and dips, with varying widths within each deposit.
• For Nogbele North, 198 mineralization wireframes and 13 dilution envelopes were generated, located in a 3 km by 2 km area and extending down to 140 m below surface.
• For Nogbele South, 37 mineralization wireframes and 5 dilution envelopes were generated, located in a 2.5 km by 1.5 km area and extending down to 130 m below surface.
• For Nangolo, 18 mineralization wireframes were generated, located in a 0.8 km by 0.4 km area and extending down to 100 m below surface.
• For Fourkoura, 43 mineralization wireframes were generated, located in a 1.8 km by 0.5 km area and extending down to 100 m below surface.
• For Stinger, 123 mineralization wireframes were generated, located in a 2 km by 0.5 km area and extending down to 130 m below surface.
• For Samavogo, 21 mineraliation wireframes were generated, located in a 4 km by 0.7 km area and extending down to 140 m below surface.

Estimation and modelling techniques

• The nature and appropriateness of the estimation technique(s) applied and key assumptions, including treatment of extreme grade values, domaining, interpolation parametres and maximum distance of extrapolation from data points. If a computer assisted estimation method was chosen include a description of computer software and parametres used.
• The availability of check estimates, previous estimates and/or mine production records and whether the Mineral Resource estimate takes appropriate account of such data.
• The assumptions made regarding recovery of by-products.
• Estimation of deleterious elements or other non-grade variables of economic significance (eg sulphur for acid mine drainage characterisation).
• In the case of block model interpolation, the block size in relation to the average sample spacing and the search employed.
• Any assumptions behind modelling of selective mining units.
• Any assumptions about correlation between variables.
• Description of how the geological interpretation was used to control the resource estimates.
• Discussion of basis for using or not using grade cutting or capping.
• The process of validation, the checking process used, the comparison of model data to drill hole data, and use of reconciliation data if available.

• The estimation methods used to update the revised block models were determined separately for each zone and generally determined by the variography ranges, number and spacing of composites in each zone as well as the zone extents. High grade gold assays were capped by zone prior to compositing. Block grades were interpolated using Inverse Distance Cubed (ID³) or Ordinary Kriging (OK) in Vulcan, Micromine or GEMS software.
• No assumptions were made regarding recovery of by-products.
• Deleterious elements or other non-grade variables of economic significance were estimated.
• For Nogbele North, Fourkoura, Nangolo and Stinger, a block size of 2.5 m by 2.5 m by 2.5 m (x, y, z) was generated inside the mineralisation wireframes. For Nogbele South, a block size of 2.5 m by 2.5 m by 5 m was generated inside mineralization wireframes. For Samavogo, a block size of 5 m by 5 m by 2.5 m was generated inside mineralization wireframes.
• Block grades were estimated using 2 metre composites in holes with approximate 40 m by 40 m spacing, to a minimum of 6 m by 10 m spacing locally. Grade interpolation searches followed the orientation of each mineralisation zone. Multiple interpolation passes were run with increasing search ranges, on each zone.
• Block sizes inside the mineralisation wireframes were determined by the mining equipment selected to best suit the project scale and size of the selective mining unit.
• No assumptions were made about the correlation between variables.
• Mineralisation wireframes were treated as hard boundaries with block grades estimated inside each wireframe using only the samples located inside the same wireframe.
• Appropriate capping levels were applied to raw gold assays by zone, prior to compositing, and based on a combination of histograms, cumulative probability plots, decile analysis, visual inspection in cross-section and level plans, and cutting curves.
• Validation was conducted on volumetric comparisons between mineralized blocks and wireframes; comparisons using alternate estimation methods; swath plots and various statistical and visual comparisons of block and composite grades.

Moisture

Cut-off parametres

• For reporting purposes, the Mineral Resource cut-off parameters were estimated by first determining the economic cut-off grades for the Mineral Reserves (See section 4). Since the Mineral Reserves cut-off grades were based on determined operating costs and a gold price of $1200/oz, Mineral Resource cut-offs were lowered to determine a reasonable grade for economic extraction.
• Mineral Resource cut-off grades for Nogbele North and South, Nangolo and Fourkoura are 0.35 g/t Au for laterite and saprolite, and 0.45 g/t Au for transition and fresh rock. Mineral Resource cut-off grades for Stinger are 0.40 g/t Au for laterite and saprolite, and 0.50 g/t Au for transition and fresh rock. Mineral Resource cut-off grades for Samavogo are 0.45 g/t Au for laterite and saprolite, and 0.55 g/t Au for transition and fresh rock.

Mining factors or assumptions

Metallurgical factors or assumptions

Environmen-tal factors or assumptions

• The Nogbele, Nangolo, Fourkoura, Stinger and Samavogo deposits are located on a permitted mining licence.
• An environmental impact assessment study has been completed for the feasibility study, with details to be included in the upcoming technical report.

Bulk density

• Whether assumed or determined. If assumed, the basis for the assumptions. If determined, the method used, whether wet or dry, the frequency of the measurements, the nature, size and representativeness of the samples.
• The bulk density for bulk material must have been measured by methods that adequately account for void spaces (vugs, porosity, etc), moisture and differences between rock and alteration zones within the deposit.
• Discuss assumptions for bulk density estimates used in the evaluation process of the different materials.

• In-situ dry bulk density was determined from diamond drill core using the water displacement method. Poorly consolidated oxide samples and porous samples were wrapped in plastic prior to immersion. Ten-centimetre samples were taken at approximate 1 m intervals and correspond to most of the mineralized and unmineralized rock types in each deposit.
• Bulk density measurements were averaged by major rock type and by oxide sub-domains (laterite and saprolite), transition and fresh rock for each deposit.

Classification

• The basis for the classification of the Mineral Resources into varying confidence categories.
• Whether appropriate account has been taken of all relevant factors (ie relative confidence in tonnage/grade estimations, reliability of input data, confidence in continuity of geology and metal values, quality, quantity and distribution of the data).
• Whether the result appropriately reflects the Competent Person's view of the deposit.

• Mineral Resource classification follows Canadian Institute of Mining and Metallurgy and Petroleum ("CIM") "Definition Standards for Mineral Resources and Mineral Reserves". Mineral Resource classification is based on variogram ranges, sample spacing and confidence in geological and grade continuity.
• Based on the knowledge of the geology, mineralisation and structure of the deposits, the Mineral Resource classification reflects the Competent Person's view of the deposits.

Audits or reviews

Discussion of relative accuracy/ confidence

• Where appropriate a statement of the relative accuracy and confidence level in the Mineral Resource estimate using an approach or procedure deemed appropriate by the Competent Person. For example, the application of statistical or geostatistical procedures to quantify the relative accuracy of the resource within stated confidence limits, or, if such an approach is not deemed appropriate, a qualitative discussion of the factors that could affect the relative accuracy and confidence of the estimate.
• The statement should specify whether it relates to global or local estimates, and, if local, state the relevant tonnages, which should be relevant to technical and economic evaluation. Documentation should include assumptions made and the procedures used.
• These statements of relative accuracy and confidence of the estimate should be compared with production data, where available.

• The relative accuracy and confidence level in the Mineral Resource estimate is based on the application of appropriate and industry standard grade estimation methods specific to each deposit and mineralisation zone. The Inverse Distance Cubed ("ID³") or Ordinary Kriging ("OK") estimation methods have been applied. Additional validation was conducted on volumetric comparisons between mineralized blocks and wireframes; comparisons using alternate estimation methods; swath plots and various statistical and visual comparisons of block and composite grades.
• The statement relates to Mineral Resource estimates by deposit, which includes the use of open pit shells to constrain open pit resources, appropriate cut-off grades and gold price. Details of the revised Mineral Resource estimates for the Nogbele, Fourkoura, Stinger and Samavogo deposits will be documented in an upcoming technical report, however, Mineral Resource estimates were generated and classified following accepted industry standards.
• Production data is not available as mining has not commenced.

Criteria

JORC Code explanation

Commentary

Mineral Resource estimate for conversion to Ore Reserves

• Description of the Mineral Resource estimate used as a basis for the conversion to an Ore Reserve.
• Clear statement as to whether the Mineral Resources are reported additional to, or inclusive of, the Ore Reserves.

• Resources classified as Measured were used as the basis for Proven ore reserves, resources classified as Indicated were used as the basis for Probable ore reserves.
• The mineral resources are reported as inclusive to the ore reserves.

Site visits

Study status

• The type and level of study undertaken to enable Mineral Resources to be converted to Ore Reserves.
• The Code requires that a study to at least Pre-Feasibility Study level has been undertaken to convert Mineral Resources to Ore Reserves. Such studies will have been carried out and will have determined a mine plan that is technically achievable and economically viable, and that material Modifying Factors have been considered.

• In March 2013, there was a Feasibility Study completed on the Project by Lycopodium Minerals Pty. Ltd. for Gryphon Minerals (acquired by Teranga Gold in 2016), referenced in this table as the Gryphon 2013 FS.
• Current Ore Reserves is part of the updated Feasibility Study commissioned by Teranga Gold Corporation.

Cut-off parametres

Banfora 2017 COG
at $1,200 /oz (g/t Au)

Saprolite

Transition Granatoid

Transition Mafic

Fresh Granatoid

Fresh Mafic

Nangolo

0.39

0.53

0.52

0.54

0.52

Nogbele NC

0.39

0.53

0.51

0.54

0.52

Nogbele South

0.40

0.54

0.53

0.55

0.53

Fourkoura

0.42

0.56

0.54

0.57

0.55

Samavogo

0.53

0.64

0.64

0.64

0.64

Stinger

0.44

0.60

0.60

0.61

0.61

Mining factors or assumptions

• The method and assumptions used as reported in the Pre-Feasibility or Feasibility Study to convert the Mineral Resource to an Ore Reserve (i.e. either by application of appropriate factors by optimization or by preliminary or detailed design).
• The choice, nature and appropriateness of the selected mining method(s) and other mining parametres including associated design issues such as pre-strip, access, etc.
• The assumptions made regarding geotechnical parametres (eg pit slopes, stope sizes, etc), grade control and pre-production drilling.
• The major assumptions made and Mineral Resource model used for pit and stope optimization (if appropriate).
• The mining dilution factors used.
• The mining recovery factors used.
• Any minimum mining widths used.
• The manner in which Inferred Mineral Resources are utilised in mining studies and the sensitivity of the outcome to their inclusion.
• The infrastructure requirements of the selected mining methods.

• The method for conversion of Mineral Resource to Ore Reserve involved a pit optimization study using the "Whittle" Lerch-Grossman algorithm to determine the economic limits of the Ore Reserve.
• Gold price used was $1,200 /oz.
• Mining will be by way of conventional open pit mining techniques using drill and blast with material movement by hydraulic excavators and trucks. The project scale suits 110 to 140 tonne class excavators in a backhoe configuration matched to 50 tonne class mining haul trucks operating at five-metre bench heights.
• The Fourkoura, Stinger and Samavogo deposits are located 6, 15 and 25 kilometres, respectively, from the process plant. The haul trucks selected have the ability to haul ore directly to the process plant. This will reduce re-handling costs and minimize waste movement through optimized pit designs for the near-surface ore bodies. The Company will operate its own fleet.
• Extensive Grade control RC drilling is planned to supplement the production blast hole sampling as part of the grade control strategy.
• Geotechnical parameters at Banfora were provided by Xstract Mining Consultants in 2017 at a Feasibility Study level based on the detailed work completed by Peter O'Bryan and Associates in 2012.
• The dilution assumption at Banfora is based on the minimum ore separation of the mining excavator of 2.5m. RPA employs an algorithm that simulates the mining and ability to separate the ore. In addition to determining the internal dilution of a mining area, it also allows for the inclusion of the contact dilution encountered at the edge of the mining areas. Total added dilution ranges from deposit to deposit between 10% to 15%.
• Minimum mining width used in pit designs was 30m to allow for subsequent push backs and adequate working space.
• Inferred resources were not considered in creating pit designs, and do not contribute to economic value in the cash flow analysis except where influencing mining dilution.
• Infrastructure required for the Banfora project has been designed and costed as part of the Feasibility Study work. Infrastructure specific to the mining method includes the maintenance shop, emulsion plant and general storage areas.
• Plant recovery based on metallurgical testing

Nogbele and Fourkoura Oxide

95.7

Nogbele NC Primary- granitic

87.7

Nogbele NC Primary - mafic

91.6

Nogbele NC Transition

93.0

Nogbele South Primary granitic

91.0

Nogbele South Primary mafic

92.0

Nogbele South Transition

93.5

Fourkoura Transition

93.5

Fourkoura Primary

91.0

Samavogo Oxide

95.7

Samavogo Transition

95.0

Samavogo Primary

92.0

Stinger Oxide

95.5

Stinger Transition

93.0

Stinger Primary granitic

84.0

Stinger Primary volcanics

90.5

*Nangolo is regarded as part of Nogbele North Central (Nogbele NC)

Metallurgical factors or assumptions

• The metallurgical process proposed and the appropriateness of that process to the style of mineralisation.
• Whether the metallurgical process is well-tested technology or novel in nature.
• The nature, amount and representativeness of metallurgical test work undertaken, the nature of the metallurgical domaining applied and the corresponding metallurgical recovery factors applied.
• Any assumptions or allowances made for deleterious elements.
• The existence of any bulk sample or pilot scale test work and the degree to which such samples are considered representative of the orebody as a whole.
• For minerals that are defined by a specification, has the ore reserve estimation been based on the appropriate mineralogy to meet the specifications?

• Weathering and rock types are clearly coded in the resource block models.
• The process plant design is based on a conventional CIL gold process flowsheet consisting of primary crushing, SAG and ball milling, with a pebble crusher, CIL tanks, elution, electro-winning and gold smelting to produce dor?(C) onsite. Throughput is expected to range between 2.2 and 2.5 million tonnes per annum, depending on the blend of soft and hard ore.
• The average predicted plant recovery is 92%, with soft material recoveries from some zones reaching as high as 95%.
• The Banfora mineral deposits were subjected to preliminary and detailed metallurgical testing in the period 2010- 2012, in support of the Gryphon 2013 FS.
• The metallurgical testing was conducted in the Perth laboratory of ALS Metallurgy (ALS) also previously named ALS Ammtec and Ammtec Ltd. The series of reports issued by ALS were described in the Gryphon 2013 FS.
• Other testing was performed by Outotec (thickener sizing determinations) and JKTech Pty. Ltd. interpreted the results of SAG mill comminution (SMC) testing conducted by ALS. Subsequently, Orway Mineral Consultants (OMC) conducted comminution circuit modelling based on the comminution testing results obtained in the ALS program.
• Metallurgical testing for the Banfora reserves are to feasibility study level.

Environmental

• An Environmental and Social Impact Assessment (ESIA) and associated Social and Environmental Management Plan (SEMP) for the project was completed by MBS Environmental and submitted in April 2013. The documents were prepared in compliance with the Burkina Faso Environmental Code and considered requirements of other International guidelines where relevant.
• An Environmental Conformance Certificate (ECC) was granted for the project by the Bureau National des Evaluations Environnementales (BUNEE) on 21 January 2014. This provided specific conditions for approval that the project is required to comply with.
• The Mining Licence was granted on 1 August 2014. This was in relation to a revised SEIA and SEMP document submitted in November 2013.
• Subsequent to this, a revised SEIA, SEMP and associated Resettlement Action Plan (RAP) were submitted on 9 December 2014 changing the mine plan and ore treatment methodology from CIL to heap leach.
• The revised documents were acknowledged by BUNEE on 23 January 2015 stating that the current ECC was still valid and did not require updating or re-issuing.
• The tailings storage facility ("TSF") will be developed as a high density polyethylene geomembrane lined paddock type facility in a two-cell arrangement. The TSF embankments will be constructed in annual raises to suit storage requirements, using downstream raise construction methods.
• Geochemistry testing for tailings and waste rock was completed. Samples recorded negative acid producing potential and near neutral pH values. In addition, a vast majority of the waste rock were non-acid forming or acid consuming. On the bases of these results, there was no perceived risk of acid generation in the waste rock dumps or tailings storage facility.

Infrastructure

• As part of the 2017 updated Feasibility Study, a detailed design and costing was completed for the required infrastructure for a 2.2 to 2.5 million tonnes per annum carbon in leach ("CIL") processing facility.
• Infrastructure includes accommodations for the employees, processing plant, maintenance facilities, tailings storage facility, HFO power generation plant, water storage dam, haulage roads connecting open pit locations to the process plant and etc.

Costs

• The derivation of, or assumptions made, regarding projected capital costs in the study.
• The methodology used to estimate operating costs.
• Allowances made for the content of deleterious elements.
• The derivation of assumptions made of metal or commodity price(s), for the principal minerals and co- products.
• The source of exchange rates used in the study.
• Derivation of transportation charges.
• The basis for forecasting or source of treatment and refining charges, penalties for failure to meet specification, etc.
• The allowances made for royalties payable, both Government and private.

• Project capital costs are based on actual construction costs, first principle estimations, and vendor quotations.
• Operating costs derived from first principles based on design specifications, vendor quotes and operating hour estimates.
• Metallurgical testing have not revealed the requirement allowances due to the existence of deleterious elements.
• The reserves were based on $1,200 gold price.
• Transportation, treatment and refining charges, royalties, etc. are based on existing contracts and government agreements.

Revenue factors

• The derivation of, or assumptions made regarding revenue factors including head grade, metal or commodity price(s) exchange rates, transportation and treatment charges, penalties, net smelter returns, etc.
• The derivation of assumptions made of metal or commodity price(s), for the principal metals, minerals and co-products.

• The revenue factor was derived based on a transport and refining cost of $3.00 per ounce gold.
• The government net smelter royalty is 3-5% depending on gold price. At $1,250 gold, a 4% royalty rate was applied.
• A gold price of $1,200 was used for pit optimization and a gold price of $1,250 was used for the cash flow tables.

Market assessment

• The demand, supply and stock situation for the particular commodity, consumption trends and factors likely to affect supply and demand into the future.
• A customer and competitor analysis along with the identification of likely market windows for the product.
• Price and volume forecasts and the basis for these forecasts.
• For industrial minerals the customer specification, testing and acceptance requirements prior to a supply contract.

Economic

• The inputs to the economic analysis to produce the net present value (NPV) in the study, the source and confidence of these economic inputs including estimated inflation, discount rate, etc.
• NPV ranges and sensitivity to variations in the significant assumptions and inputs.

• The net present value was determined using a discounted cash flow model of the initial mine plan at $1,250 gold and 5% discount rate.
• The NPV has been sensitized to the following gold prices: $1,200/oz, $1,250/oz, $1,300/oz and $1,350/oz.

Social

• The current resources and reserves for the Banfora Project are fully permitted and the environmental impact assessment study is complete.
• Positive progression of the resettlement action plan is supported by the local communities. Under the resettlement action plan, approximately 500 households in the villages of Zegnedougou, Nangueledougou, Djondougou, Katolo, Nadjengoala will be relocated over the next five years, with a further 350 households compensated for agricultural land impact.
• Resettlement sites have been identified, and the physical planning, design and approval of future resettlement communities is underway. Construction of the first resettlement is expected to begin in the first quarter of 2018.
• Employment opportunities and sustainable development initiatives supported by Teranga will provide further support for socio-economic growth in the area.

Other

• To the extent relevant, the impact of the following on the project and/or on the estimation and classification of the Ore Reserves:
• Any identified material naturally occurring risks.
• The status of material legal agreements and marketing arrangements.
• The status of governmental agreements and approvals critical to the viability of the project, such as mineral tenement status, and government and statutory approvals. There must be reasonable grounds to expect that all necessary Government approvals will be received within the timeframes anticipated in the Pre-Feasibility or Feasibility study. Highlight and discuss the materiality of any unresolved matter that is dependent on a third party on which extraction of the reserve is contingent.

Classification

• The basis for the classification of the Ore Reserves into varying confidence categories.
• Whether the result appropriately reflects the Competent Person's view of the deposit.
• The proportion of Probable Ore Reserves that have been derived from Measured Mineral Resources (if any).

• Probable ore reserves are based on the CIM definition for indicated resources (compliant with JORC) using geostatistical modeling techniques applicable to gold deposits. Proven ore reserves are based on the CIM definition for measured resources (compliant with JORC) using geostatistical modeling techniques applicable to gold deposits, and second, stockpile inventory based on production drill assay data.
• The resources appropriately reflects the Competent Person's view of the deposit.

Audits or reviews

Discussion of relative accuracy/ confidence

• Where appropriate a statement of the relative accuracy and confidence level in the Ore Reserve estimate using an approach or procedure deemed appropriate by the Competent Person. For example, the application of statistical or geostatistical procedures to quantify the relative accuracy of the reserve within stated confidence limits, or, if such an approach is not deemed appropriate, a qualitative discussion of the factors which could affect the relative accuracy and confidence of the estimate.
• The statement should specify whether it relates to global or local estimates, and, if local, state the relevant tonnages, which should be relevant to technical and economic evaluation. Documentation should include assumptions made and the procedures used.
• Accuracy and confidence discussions should extend to specific discussions of any applied Modifying Factors that may have a material impact on Ore Reserve viability, or for which there are remaining areas of uncertainty at the current study stage.
• It is recognised that this may not be possible or appropriate in all circumstances. These statements of relative accuracy and confidence of the estimate should be compared with production data, where available.

• The relative accuracy and confidence level in the Mineral Reserves estimate is based on the application the industry standard Lerchs-Grossman optimizer, using operating costs estimated from first principles and benchmarked against the existing operation at Sabodala.
• The dilution and ore recovery estimates are based on a comprehensive algorithm created by RPA that evaluates the orebody geometry and applies the minimum mining width to the model on a bench by bench basis.
• The geotechnical parameters for the pit wall angles for Banfora are based on a feasibility level analysis by Xstract.
• Metallurgical testing was completed at accredited laboratories and reviewed by a Competent Person independent to Teranga Gold.
• The accuracy of the estimates within this Ore Reserve are largely determined by the order of accuracy associated with the Mineral Resource model, metallurgical inputs, and long-term cost adjustment factors.