-- The major assumptions made and Mineral Resource model used for pit and stope optimisation (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. Metallurgical -- No nickel Ore Reserve is stated in this release. 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? Environmental -- No nickel Ore Reserve is stated in this release. -- The status of studies of potential environmental impacts of the mining and processing operation. Details of waste rock characterisation and the consideration of potential sites, status of design options considered and, where applicable, the status of approvals for process residue storage and waste dumps should be reported. Infrastructure -- No nickel Ore Reserve is stated in this release. -- The existence of appropriate infrastructure: availability of land for plant development, power, water, transportation (particularly for bulk commodities), labour, accommodation; or the ease with which the infrastructure can be provided or accessed. Costs -- The derivation of, or assumptions made, regarding -- No nickel Ore Reserve is stated in this release. projected capital costs in the study. -- The methodology used to estimate operating costs. -- Allowances made for the content of deleterious elements. -- 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. Revenue -- The derivation of, or assumptions made regarding -- No nickel Ore Reserve is stated in this release. factors 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. Market -- The demand, supply and stock situation for the -- No nickel Ore Reserve is stated in this release. assessment 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 -- No nickel Ore Reserve is stated in this release. -- 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. Social -- The status of agreements with key stakeholders and -- No nickel Ore Reserve is stated in this release matters leading to social licence to operate. Other -- To the extent relevant, the impact of the following -- No nickel Ore Reserve is stated in this release. 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 -- No nickel Ore Reserve is stated in this release. 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). Audits or -- No nickel Ore Reserve is stated in this release. reviews -- The results of any audits or reviews of Ore Reserve estimates. Discussion of -- Where appropriate a statement of the relative -- No nickel Ore Reserve is stated in this release. relative accuracy and confidence level in the Ore Reserve accuracy/ estimate using an approach or procedure deemed confidence 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.
SOURCE Westgold Resources Limited
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