Evaluation Criteria Exploration Information Mineral Resource Mineral Reserve A. General 1. Purpose of report  Statement of Company for whom the report was prepared, whether it was intended as a full or partial evaluation, what work was conducted, what work remains to be done.  Name of Report author and relationship of the author to the Company.  See Exploration Information.  See Exploration Information. 2. Project Description  Description of commodity, magnitude of project, background, and business arrangement.  See Exploration Information.  See Exploration Information. 3. Project Location  Description of location (country, state or province, county, latitude and longitude, etc.).  A map showing location and access should exist.  See Exploration Information.  See Exploration Information. 4. Property Ownership  Description of ownership of mineral rights, surface rights, access rights, leases, concessions, royalties, agreements, and encumbrances and liabilities.  Nature of Company’s existing rights or still to be obtained to prospect or mine, plus any obligations to earn those rights and time limits.  Disclosure of back-in agreements or rights and, to the extent historic or current environmental liabilities.  Discussion of relevant adjacent properties.  See Exploration Information.  See Exploration Information.
5. Accessibility, Climate, Local Resources, Infrastructure, and Physiography  Topography, elevation, and flora and fauna.  to access the property.  Proximity of project to population centers and restricted use areas.  Climate and length of operating season.  Sufficiency of surface rights for mining and processing.  Availability and sources of power, water, mining personnel, potential tailings and waste storage areas, heap leach and processing plant sites.  See Exploration Information.  See Exploration Information. 6. Project History  Description of prior ownership and ownership changes.  Exploration and/or production history.  Significant historical Mineral Resource and Mineral Reserve estimates.  See Exploration Information.  See Exploration Information.  Comparison of historical production performance statistics to current and planned operations, including the reliability of these and how they relate to the current estimates. 7. Site Visits  Comment on any site visits and dates undertaken by the Competent Person(s) and outcome of those visits.  Reviews of surface sampling, geophysics, and mapping programs.  If no visits were undertaken, state why.  Comment on site visits and dates undertaken by the Competent Person(s) and outcome of those visits.  Visits during major drilling programs and metallurgical sample selection.  Review logging, sampling, drill hole locations.  See Mineral Resource.  Multiple visits during Pre-Feasibility and Feasibility Studies to view aspects of infrastructure layout sites, road access, stakeholder meetings.  Multiple visits (at least annual) during development of life-of-mine plans to review current and planned operations. 8. Units of Measure  Units of measure, currency, and relevant exchange rates used should be stated.  See Exploration Information.  See Exploration Information. B. Project Data
 Description of geophysical and geochemical data, including dimension, type, results, and implications.  Reliable geological maps and cross sections of appropriate scales should exist to support interpretations.  Preliminary assessments or observations of geotechnical and hydro-geological conditions that can impact mining and processing assumptions.  Significant data, or data that could materially influence the estimated quantity and quality of the resource, should be discussed. 3. Topography  General topographic map is sufficient.  Topographic map in sufficient detail to support mine planning and conceptual infrastructure layout.  Detailed topographic map.  Aerial surveys must be checked with ground controls and surveys, particularly in areas of rugged terrain, dense vegetation, or high altitude. 4. Sampling a. Method  Description of sample type and sample collection method (hand, grab, trench, channel, or chip sample; core hole, rotary hole, or reverse circulation; bulk sample, etc.).  Discussion of sample quality, size, and representativeness (sample recovery, high grading, selective losses or contamination, and any other factors that may have resulted in sample biases, etc.).  QA/QC procedures adopted for sample collection including core cutting and splitting as required and should be implemented early  See Exploration Information.  The quantity and quality of sample information is critical to the reliability of resource estimates and should be documented.  Particular attention should be given to this information.  See Mineral Resource.
 If possible, establish Exploration Target ranges for grades and tonnages.  Discussion of basis for using, or not using, grade cutting or capping, or restriction of the volume of influence.  Compositing or data aggregation methods used should be described.  If a computer method was chosen, description of programs and parameters used.  Geostatistical methods are extremely varied and should be described in detail.  The method chosen should be supported.  The geostatistical parameters, including the variogram, and their compatibility with the geological interpretation should be discussed.  Experience gained in applying geostatistics to similar deposits should be into account.  Description of methods used to verify and validate models.  Assumptions used for any reporting of net smelter returns or metal equivalent values. D. Resource and Reserve Classification 1. Criteria  Not applicable.  Description and justification of criteria used to classify the resource, including relationship to cut-off grade assumptions.  To classify a resource as Measured or Indicated, there must be a reasonably high level of confidence with respect to the quality of the information used  Description and justification of criteria used to classify the reserves, and confirmation of resource classification assumptions with respect to cut-off grades used in the production schedule.  Description of all Modifying Factors used to demonstrate economic viability of Measured and Indicated
to estimate this resource, as well as the interpretation of this information.  Exploration Targets must be excluded from economic evaluations.  If Inferred Mineral Resources are used in economic evaluations, this should be disclosed.  Reconciliation with previous Mineral Resource estimates.  A conceptual analysis to justify reasonable prospects for eventual economic extraction Mineral Resources to support declaration of a Mineral Reserve.  Exploration Targets and Inferred Mineral Resources must be excluded from demonstration of economic viability to support declaration of a Mineral Reserve.  Discussion of the level of confidence in the Modifying Factors.  Uncertainty in Modifying factors may reduce conversion of all or part of the Measured Mineral Resources to a Probable Mineral Reserve.  Reconciliation with previous Reserve estimates. 2. Risks and Opportunities  Opportunity expressed as Exploration Target ranges of tonnages and grades.  Discussion of uncertainty of geological boundary assumptions and their risk and opportunity for overall Mineral Resource estimates.  Address uncertainties on the tonnage and grade of production increments.  Determine work programs to upgrade classification or increase resources.  Determine work programs to upgrade Probable Mineral Reserves to Proven Mineral Reserves. E. Extraction 1. Mining a. Method  Description of any Modifying Factors that could have a significant impact on the project viability.  See Exploration Information.  Discussion of mining method to be used, and selective mining criteria assumed that supports the estimated resource.  Discussion of the dilution implicit in the resource  Mining method(s), mine plans and production schedules defined for the life of the project.  Description and justification of mining method(s) to be used.  Discussion of mining rate, equipment selected, ore control methods, geotechnical and hydrogeological considerations, staffing requirements,
extraction design and rock/mineralogical character.  Detailed major equipment list.  Price quotes for all major equipment items.  Major components of operating costs by functions and elements itemized and supported.  Capital and operating budgets defined by year.  See Table 2 of the SME Guide. 3. Recovery a. Mining  Generally not determined.  State typical dilution and mining recovery for the selected or proposed mining method.  Reported tonnages, grades and mineral contents must take into account mining dilution and mining recovery.  Description and justification of mining dilution and mining recovery is required. b. Processing  Generally not determined.  Provide insight gained from preliminary testing and insight into differences between laboratory and commercial scales.  Discussion of whether the reported tonnages and grades consist of material in place or whether processing recoveries are included.  If in-place metal or quantity are reported, information must be supplied concerning expected processing losses or recoveries.  Justification of processing recoveries is required. 4. Cut-off  Typically reported in terms of minimum true thickness and grade criteria.  Justification of the cut-off grade used to report resources including but not limited to assumptions made for costs, prices, recoveries, by-product credits if based on revenue, net smelter return.  Description of methods used to calculate cut-off grades, including but not limited to costs, prices, recoveries, and by-product credits if based on revenue, net smelter return. F. Supporting Infrastructure and General and Administrative
1. Facilities  See A.5 (Accessibility, Climate, Local Resources, Infrastructure, and Physiography).  See A.5 (Accessibility, Climate, Local Resources, Infrastructure, and Physiography).  It is reasonable to assume that necessary facilities could be built or accessed.  Necessary facilities have been designed may include processing plant, tailings dam, leaching facilities, waste dumps, road and/or rail accesses, ports, power supply, pipelines, offices, housing, security, etc.).  Detailed map showing location of facilities.  Construction schedule developed. 2. Staffing  See A.5 (Accessibility, Climate, Local Resources, Infrastructure, and Physiography).  Safety plan.  Emergency evacuation plan.  See A.5 (Accessibility, Climate, Resources, Infrastructure, and Physiography).  Safety plan.  Emergency evacuation plan.  Detailed staffing plan.  Training.  Salary scale.  Work schedule.  Operating days.  Safety plan.  Emergency evacuation plan. 3. Supplies  Generally not determined.  Reasonable assumption that necessary supplies can be obtained.  Necessary supplies have been identified (electricity, reagents, fuels, etc.).  Demonstration that supplies are available as needed. 4. Water Considerations  Preliminary investigations to support exploration activities.  Stated reasonable assumptions.  Water quantity and quality requirements specified and sources of water identified.  Dewatering requirements estimated on the of hydrologic and climatic studies.  Water treatment and disposal, water balance and management, and quality control plans in place. 5. Costs  Generally not determined.  Stated reasonable assumptions.  Description and justification of capital and operating costs.
 All capital items identified with sufficient detail for costing.  Construction schedule and capital and operating budgets defined by year. G. Environmental Compliance and Reclamation  Description of environmental factors likely to prohibit the project proceeding, including contaminants in material to be disturbed and deleterious elements likely to in products.  Description of environmental factors that could have a significant impact on the project feasibility and possible means of mitigation.  Progress of environmental, cultural, and archeological baseline studies.  The necessary permits have been obtained, or there is reasonable basis to believe that all permits required for the project can be obtained in a timely manner.  Description of yearly environmental compliance methods and costs, including reclamation, bonding, and closure plan and costs. H. Social License  Preliminary review with stakeholders in exploration and project development  Consideration of “Conflict Minerals” regulations.  Sustainable development to support exploration.  Formal contact with local inhabitants.  Discussion of potential social or community related requirements and plans for the project and the status of negotiations or agreements with local communities and other stakeholders.  Consideration of “Conflict Minerals” regulations.  Sustainable development to support advanced project drilling and sampling.  Training programs.  Social management plan and program, and community and other stakeholder related requirements and agreements.  Consideration of “Conflict Minerals” regulations.  Sustainable development to support construction and operation.  Training programs, local vendor development plan.  Evaluation of political risk and mitigation. I. Economic Viability 1. Product Value  Description of valuable and potentially valuable product(s) including suitability of products to market.  For minerals products where a market is needed prior to beginning exploration, a  See Exploration Information.  Stated reasonable assumptions concerning likely product  Potential markets and ability to enter the market.  Penalties likely incurred for contaminants and conversely,  See Mineral Resource.  Description of product to be sold.  Discussion of whether there exists a market for the product, its impact on that market, and whether contracts for the sale of the product are in place or expected to be obtained.
description of the customer specifications, testing, and acceptance requirements. credits if estimated in resource model or assumptions made if based on metallurgical test work.  Demand, supply, and inventories for the particular commodity; consumption trends and factors likely to affect supply and demand in the future, resulting in commodity profiles.  Demonstration that the price assumptions are reasonable and supportable.  Justification of assumptions made concerning production cost and value of product at sale point.  Transportation, marketing, processing, and other costs or losses should be considered. 2. Cash Flow Analysis  Generally not applied.  Consideration of order of magnitude capital cost, operating costs, and revenue to indicate reasonable prospects of eventual economic extraction.  Detailed cash flow analysis for the life of the project, including a summary of taxes, royalties, and government levies.  Sensitivity analysis and simulations of risk related to grade, prices, capital costs, and operating costs, and any additional significant variables.  Discount rate, internal rate of return, payback period and metrics. 3. Study Accuracies  Preliminary Studies often applied to justify exploration targets.  See 2 of the SME Guide in reference to Scoping Studies that might be used to support a Mineral Resource statement.  See Table 2 of the SME Guide in reference to Pre-Feasibility and Feasibility Studies that are used to support a Mineral Reserve statement. J. Risk and Opportunity Analysis  Generally not applied.  High-level risk and opportunities reviewed.  Sufficient risk assessment completed to confirm reasonable prospects of eventual economic extraction.  Resource enhancement opportunities.  Project technical, social, environmental, and economic risk in the form of a risk register describing likelihood of occurrence and cost.
6. Grade Estimation  Generally not applied.  Grade estimation (including geostatistical) and interpolation techniques applied.  Adjustments made to diamond size/weight distribution for sample plant performance and performance on a commercial scale.  See Mineral Resource. 7. Value (Price) Estimation  Generally not applied.  Accreditation of valuer and date of valuation.  Details of parcel(s) sorted and valued, number of stones, carats, and size/weight distribution using a standard progression of sieve sizes for each identified facies, geological unit or domain.  Value per sieve size.  Estimation (models) of value with size. Assessment of diamond damage (insignificant, moderate, severe).  Value with change in bottom cut-off size.  Estimate of the uncertainty in the value estimate due to parcel size and comment on the spatial representivity of the valuation parcel.  Clarification as to whether a strict bottom cut-off been applied or does the modeled value include incidental diamonds below the bottom cut-off?  See Mineral Resource. 8. Security and Integrity  of custody.  Site security.  Accredited process audit.  Whether samples were sealed excavation.  Valuer location, escort, delivery, cleaning losses, reconciliation with  See Mineral Resource.
 Include statement that the Competent Person’s RPO has jurisdiction over the Competent Person’s actions with regard to the Mineral Deposit being publicly reported and the Competent Person is subject to the code of ethics of the RPO. Include statement whether the Competent Person is licensed or registered as an engineer or geoscientist in the jurisdiction in which the deposit occurs if required by law in that jurisdiction. 2. Reliance on other specialists  Reliance on specialists applies in limited circumstances to information such as political, environmental or tax matters that are outside the purview of a Competent Person.  Identification of: - the source of the information relied upon, including the date, title, and author of any report, opinion, or statement, - the extent of reliance, and - the portions of the Public Report to which the reliance applies.  See Exploration Information.  See Exploration Information. N. References  References cited with author, date, title, and source.  See Exploration Information.  See Exploration Information. specialized
APPENDIX G CRIRSCO Template-Compliant Standards, Codes, and Guides Country/Region Reporting Organization Name Date Website World-wide Committee for Mineral Reserves International Reporting Standards (CRIRSCO). International Reporting Template for the public reporting of Exploration Results, Mineral Resources and Mineral Reserves. 2013 www.CRIRSCO.com. Australasia Joint Ore Reserve Committee of AusIMM, AIG, Minerals Council of Australia (JORC). Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves. 2012 www.JORC.org. Brazil Brazilian Commission of Resources and Reserves. The CBRR Guide for Reporting Exploration Results, Mineral Resources and Mineral Reserves. 2015 www.cbrr.org.br. Canada Canadian Institute of Mining, Metallurgy and Petroleum (CIM). CIM Definition Standards - for Mineral Resources and Mineral Reserves. 2014 www.cim.org. Chile Institution of Mining Engineers of Chile (IIMCh). Code for the Certification of Exploration Prospects, Mineral Resources and Reserves. 2014 www.CRIRSCO.com. Europe Pan-European Resources and Reserves Committee (PERC). Pan-European Standard for Reporting Exploration Results, Mineral Resources and Reserves. 2013 www.percstandard.eu. Kazakhstan Kazakhstani Association for Public Reporting of Exploration Results, Mineral Resources and Mineral Reserves. Kazakhstan Code for Public Reporting of Exploration Results, Mineral Resources and Mineral Reserves. 2016 www.CRIRSCO.com. Mongolia Mongolian Professional Institute of Geology and Mining. Mongolian Code for Public Reporting of Exploration Results, Mineral Resources and Mineral Reserves. 2014 www.CRIRSCO.com.
Russia The Russian Society of Subsoil Use Experts (OERN). Russian Code for Public Reporting of Exploration Results, Mineral Resources and Mineral Reserves (NAEN Code). 2013 www.CRIRSCO.com. South Africa SAMCODES Standards Committee. African Code for Public Reporting of Exploration Results, Mineral Resources and Mineral Reserves. 2016 www.samcode.co.za. United States Society for Mining, Metallurgy and Exploration (SME). The SME Guide for Reporting Exploration Results, Mineral Resources, and Mineral Reserves. 2017 www.smenet.org.