BERNARD SELASIE AGBENUVOR

• Supervision of metallurgical test work programs and participating when required to.
• Undertaking critical metallurgical test work, which requires more attention to details.
• Planning and management of technical work and quality assurance, with total responsibility for quality and validity of results.
• Performing all duties within relevant occupational health and safety guidelines and policies and following relevant procedures documented in the quality assurance system.
• Undertaking project management duties, KPI's and invoicing of project cost.
• collation and data analysis for preparing weekly reports for both clients and the Technical Manager.
• Liaising with clients to understand and meet their project needs.
• Adherence to all BV Minerals QHSE Policies and Standards.

• Sample collection, sorting and preparation such as crushing, screening, splitting and pulverising.
• Collected and prepared samples for third-party testing, obtained and evaluated results and made forward-thinking choices about materials options.
• Traveled to field sites to collect and record data and samples as appropriate to specific objectives of study.
• Test work planning and execution of gold ore GRG, flotation and leaching testwork.
• Conducting carbon activity and gold loading test work.
• Chemical analysis of leach, carbon activity and loading solution using the MPAES.
• Data Analysis, interpretation and reporting.
• Created graphs, spreadsheets and presentation slides to help researchers present findings.

• Sample collection, sorting and preparation such as crushing, screening and pulverising.
• Undertaking a range of routine laboratory and pilot test work in physical and chemical separation of iron ore, gold, lithium and REE within set guidelines and priorities.
• General metallurgical laboratory equipment operation and routine housekeeping activities.
• Data collection and reporting to metallurgist.
• Weekly safety activity and housekeeping.
• Managed laboratory supplies and equipment, providing maximum output to meet data deadlines.

• Liaised with scientists to test hypotheses and pursue valuable new research while producing comprehensive research questions and potential hypotheses.
• Sample collection, sorting and preparation such as crushing, screening and pulverising.
• Undertaking a range of routine laboratory and pilot test work in physical and chemical separation routines within set guidelines and priorities.
• Hydrometallurgical test work involving cyanide and glycine leaching technology (GLYCAT) of gold, copper and nickle ores.
• Operation of portable XRF to obtained chemical assay of fresh ore and leaching residue.
• Data analysis, interpretation and reporting to process engineer and metallurgist.
• Weekly safety activity check and housekeeping.

• Collected, sorted, labeled, prepared and stored lab samples according to laboratory specifications.
• Employed scientific methods to promote quality of comminution test works such as Equotip Hardness testing of drill cores, point load testing (PLT), Drop Weight Testing, JK Rotary Breakage Tester rock characterisation and Bond Work Index testing.
• Used time management and adaptability skills to prioritize and run multiple tests.
• Collected and organised data to perform data analysis and prepare technical reports.
• Reviewed experimental data to catch potential lab errors and correct mistakes.
• Performed daily housekeeping tasks driving efficient laboratory operations.
• Attended lab meetings to participate in research discussions.

• Efficiently managed day-to-day educational aiding operations, including lesson planning, student guidance, curriculum implementation and continuous improvement of industry best practices for Mineralogy and Comminution courses.
• Preforming tutorials and organising practicals for student in Physical and Chemical processing of Minerals Lab session in ore microscopy, bond work index, drop weight testing, leaching and hydrocyclone practicals work Marking students reports from lab session
• Eliminated learning gaps and effectively instructed students, utilizing wide variety of innovative teaching aids and motivational strategies.
• Conducting safety analysis and putting in place safety measures at areas where they are lacking.
• Conducted qualitative and quantitative analysis on assigned data.
• Created graphs, spreadsheets and presentation slides to help researchers present findings.
• Assisting in daily operation of the pilot plant Conducting laboratory research in the field of comminution and reporting analysis result to research fellows.
• Set up, calibrated and maintained laboratory and field research equipment for requirements of testwork.
• SOP preparations and implementation.

• Conducted flotation reagent screening test that contributed to the change the plant flotation reagent due to improved separability reported from the screening test program.
• Introduced to plant metallurgical accounting and reporting
• Conducting floatation test work for plant optimization.
• Conducting plant surveys weekly to make sure the plant is operating at the optimum.
• Data analysis, interpretation and reporting.
• Attended daily toolbox meeting and performed routine plant checks.
• Outsourcing of new laboratory equipment by dealing with supplier and providing report and quotes to management.

• Conducting laboratory bench top and pilot plant test programs in the field of mineral processing and also involved in mineral plant survey across some gold mines in Ghana.
• Involved in major consultancy work from various mining companies in Ghana as a team member Carried out duties such as sample preparations, comminution, acid digestion, leaching using bottle roll technique and monitoring kinetics, diagnostic leaching, abrasive index test, bond work index test, smelting, cupellation, flotation, water treatment techniques, AAS reading and reduction studies.
• Preparation of testwork result, analysis and reporting for review by lead metallurgical consultant.
• Observed safety precautions and practices to reduce injury when using light and heavy laboratory device and equipment.
• Demonstrated leadership by making improvements to work processes and helping to train others.
• General housekeeping, equipment maintenance and chemical and sample inventory.

• Thesis Title

Development of a geometallurgical coarse ganguerejection indicator for gold ores.

• Thesis Overview

Coarse gangue rejection upgrades low and uneconomic ore grades before intensive downstream processes. The Gangue Rejection Amenability Test (GRAT) is a characterisation method used to assess the suitability of gold ores for coarse gangue rejection through density and size separation. Various studies conducted with the Gangue Rejection Amenability Test (GRAT) indicated a variable coarse gangue rejection response across the different types of gold ore deposits tested. The variability identified has made the current project's objective to establish an early indicator that could be used to determine ores that are likely to respond better to coarse gangue rejection to avoid wasting resources and time. The early indicators could be used as the first stage in determining whether an ore is suitable for Coarse Particle Gangue Rejection (CPGR) before conducting an entire GRAT test work to ascertain the mass and metal recovery at both reject and accept streams, respectively. The result of this work could contribute to the growing knowledge of geometallurgy, which can have applications in predicting mineral process response to reduce energy, reagent and water consumption. In addition, better revenue forecasting and estimations can be made based on mine productivity, and measures can be taken early to mitigate any downside to productivity. The initial studies have identified using a machine learning approach such as Shapley Regression analysis with Random Forest to identify and quantify variable that influences the GRAT performance from the previous that is currently in the database. Variables such as Au, Fe, S and As feed grades significantly contributed to the coarse gangue rejection response. Based on these findings, The Shapley Regression with Random Forest can be used to evaluate which geometallurgical characteristics significantly contribute to the coarse gangue rejection response. The identified characteristic can then be used as an early indicator for coarse gangue rejection amenability. This forms the foundation for the next face of this project.

• Received Curtin tuition fee full offset and ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals

• Thesis Title
  Investigation into Multistage Impact Breakage
• Thesis Overview
  A standardized procedure has been developed to investigate single and multistage impact breakage for enhanced coarse gangue rejection and coarse gangue cleaning. In addition, a laboratory scale breakage device was developed that could deliver a precise specific impact breakage and potentially use progeny kinetic energy to generate secondary breakage. Testing results show that subsequent stages of impact breakage reduce the amount of valuable minerals in coarse fractions rendering it barren. Furthermore, results from the new impact tester show the residual velocities of progenies can be retained and have sufficient velocity to generate secondary breakage.
• Additional Training Activities
  Research Integrity Module - Completed 8 January 2019
• Received University of Queensland full tuition offset and CRC for Optimising Resource Extraction (CRC ORE) full stipends.
• Member of JKMRC Jackals

• Undertook final year project work on the "Reduction of Akpafu-Todzi Iron Ore Using Waste Plastics and Biomass
• Field trip to AngloGold Ashanti Obuasi Mine, Ghana
• Field trip to Golden Star Mines, Bogoso, Ghana
• Field trip Goldfields Tarkwa Mines, Ghana
• Member of the Mining and Mineral Student Association
• Member of the University Basket Ball Team
• Elected to Organizing Secretary for International Movement of Catholic Students (IMCS-Pax Romana) UMaT Local Tarkwa Ghana in 2013