This allows the results to be reconciled against planned. A simulationbased geostatistical approach to realtime. How to prepare a creditors reconciliation statement and debtors reconciliation the purpose of credit control the purpose of monthly statements to debtors debtors age analysis key concepts notes adapted from grade 12, accounting for all, chapter 3 creditors transactions and creditors accounts. Mine geology, grade control, and reconciliation optimize mine planning and profitability by understanding the geological controls on orebodies an appreciation of the geological spatial controls to mineralization is fundamental to mine operation optimization, nearmine exploration, resource estimation, geotechnical engineering, and mineral. Teachers must clarify that the bank reconciliation statement is simply used to show the difference between the bank balances of the cash book and the bank statement.
Reconciliations between ore reserves, grade control and production the adoption of this method requires that both grade control and ore reserves estimates be based on the same. Creation of grade control block models uses 2 m composites with conditional simulation in mp3 used as the estimation method. On this page you can read or download reconciliation accounting grade 11 question papers and memorandum in pdf format. It requires the delivery of tonnes at an optimum grade to the mill, via the accurate definition of ore and waste. Reconciliation involves the collection of tonnage, grade quality and contained metal product data from disparate and hopefully independent sources. Blast monitoring and blast translation case study of a. Reconciliation accounting grade 11 question papers and. They will receive this sacrament at holy cross on sunday, february 25, 2018 at 12. Integrating the theory of sampling into underground mine. There is always going to be ore loss and dilution during the normal mining process, therefore the reporting of mined grade and tonnes and ultimately mill reconciled grade and tonnes separate to grade control grade and tonnes, will. A major weakness for any reconciliation from an open cut is you do not know how much ore has been directed to a waste heap. Pdf grade control geological mapping in underground gold. During operation, local predictions can be significantly improved when deviations are monitored and integrated back into the grade control model. The need for reconciliation reconciliations should be consistently monitored over time even a successful predictive approach can deteriorate due to changes in geology, ore type, sampling procedures, grade control methods, mining methods, milling controls, personnel, etc lack of systematic reconciliation means that there are no controls to.
In most massive mining operations, grade control programmes must be specified in terms of protocols that define sampling points and methods, appropriate for the method, from the creation of the gradeblock model to the final product dispatch. Grade control geological mapping in underground gold vein. This contribution introduces a novel realizationbased approach to realtime updating of the grade control model by utilizing online data from a production monitoring network. Grade control and reconciliation vivienne snowden snowden associates pty ltd 41 ord street west perth wa 6005 1. In practical terms, the answer will relate to the vertical rate of advance of mining, overall pit geometry and the grade controlmine planning cycle time. Jun 22, 2016 on this page you can read or download reconciliation accounting grade 11 question papers and memorandum in pdf format. It essentially comprises data collection, integration and interpretation, local resource estimation, stope design, supervision of mining and stockpile management. Mine to mill reconciliation three case studies ausimm. Excel reconciliation process using vlookup duration. A geostatistical approach to realtime reconciliation of. Implementing an ore reconciliation system supported by spc grade control model the grade control model is typically used for daytoday production planning. Operationalizing the definition of the word reconciliation and commonly associated terms, such as trust, social cohesion, and social harmony, would be a tremendous gain in monitoring and evaluating reconciliation projects. This would inevitably result in significant economic impact on mining companies.
Sap erp solution ficoreconciliation tool reconciliation. Examples are exploration data, production sampling data from blast holes or draw points, and process plant data. Grade control prediction constraints on reconciliation the grade control or ore control process involves the predictive delineation of the tonnes and grade of ore that will be recovered by mining. Srk has the expertise to implement, monitor, analyse and react to grade control data. It is very important that you understand these basic concepts. Read online accounting self study guide grade 10 12 book pdf free download link book now. Differences in mine call factors and grade control reconciliation can lead to frustration between the sites geoscientists and its metallurgists leading.
Aug 07, 2016 differences in mine call factors and grade control reconciliation can lead to frustration between the sites geoscientists and its metallurgists leading to a level of distrust in the mill. Reconciliation uncertainties in mine production geology. In an openpit operation, this involves the sampling of blasthole cuttings produced by downthehole hammer drills and the classification of bench reserves into ore, low grade or waste material, or into various metallurgical types. The children will be able to relate the two necessary elements needed for the sacrament of reconciliation. Scribd is the worlds largest social reading and publishing site. In most massive mining operations, grade control programmes must be specified in terms of protocols that define sampling points and methods, appropriate for the method, from the creation of the grade block model to the final product dispatch. Grade control is a process of maximising value and reducing risk. Jan 09, 2019 excel reconciliation process using vlookup duration. Grade control good grade control and reconciliation. Concepts and accounting cycle in accounting you will come across terminology relating to a business. Apr 15, 2020 download gradecontrolandreconciliation. Grade 11 bank reconciliation work revision extra exercise 45 marks. Indicators used to measure reconciliation are generally weak. Understanding grade distribution, optimising mining selectivity and controlling mining dilution and losses through grade control are essential for achieving the mine plan.
View essay grade control good from mining eng hgl217 at university of zimbabwe. Mine geology, grade control and reconciliation srk. In your workbook there are two activities that will assess your understanding of basic accounting concepts and terminology. Amoa ko richard, and al ha ssan sule mana, ore grade. A consistent record of poor reconciliation is an indication that this variance has not been adequately managed. The grade control process a complex system is in place that is capable of a high degree of control and selectivity. The predictions have a number of common characteristics across all mineralisation and mining types, from small, low production rate. When analysing grade control methodology, srk considers detailed geological controls on grade distribution, optimal sample spacing, sample collection, sample preparation and analysis, quality control, and costs and benefits to ensure your grade control and reconciliation processes are fitforpurpose and meet best practice. Reconcile grade control estimates with mine production, with stockpiles and processing. These data may be compared by means of ratios factors. The essence of ore grade reconciliation is to identify, analyse and manage variance between planned and actual results in a way that highlights opportunities. Grade 10 preparation of debtors and creditors lists to reconcile with the debtors and creditors control accounts including errors and omissions grade 11 bank reconciliation reconciliation of statements received from creditors with accounts in creditors ledger.
Mine geology, grade control, and reconciliation srk consulting. Several years of favourable mine to mill reconciliation data from the mining and processing of higher grade and lower grade stockwork styles of gold mineralisation provided the confidence in the approach to grade control to support the expansion plans during a period of low gold prices. Implementing an ore reconciliation system supported by. In some mining operations, one of the most important roles played by the geologist is the supervision of grade control.
Unexpected deviations, resulting from large uncertainties in the grade control model. This is summary of possible content that can be examined. Mine geology, grade control, and reconciliation srk. Grade control geological mapping in underground gold vein operations article pdf available in applied earth science imm transactions section b 1212. The grade control data must be available in time to inform and be integrated into the mining plan if it does not do that, it is too late. A dedicated team of grade control operators undertake blast hole sampling, spot grade perimeters in the openpit and control loading and dumping of material to and from low, medium and high grade ore stockpile destinations.
Oct 22, 2015 the essence of ore grade reconciliation is to identify, analyse and manage variance between planned and actual results in a way that highlights opportunities. In many operations, the grade control model can be defined from the short range model as ore control polygons or cuts that delineate ore and waste boundaries. How to properly manage your money like the rich tom ferry duration. We unpack the purpose of bank reconciliation, prepare a bank reconciliation statement as well as update the bank account in. Block outs are constructed in vulcan using the mp3 model generated together with pit mapping, underground mapping, stope, fault, and lithology wireframes to generate a geologically valid blockout. A dedicated team of grade control operators undertake blast hole sampling, spot grade perimeters in the openpit and control loading and dumping of material to and from low, medium and highgrade ore stockpile destinations. Students and their parents will be asked to prepare for this sacrament in several concrete. This allows the results to be reconciled against planned production and actual plant data. All books are in clear copy here, and all files are secure so dont worry about it. If they owe more we debit the debtors control account. If you dont see any interesting for you, use our search form on bottom v. It can be understood with the help of a simple example. Enter the supplementary entries direct to the bank account and balance the account on 31 october 2009.
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