Stone Karimuuswa

• 42% increase in capacity utilization on DMS modules resulting in a cost savings and improved overall plant efficiency. • Successfully optimized reagent use and inventory management, resulting in a 12% reduction in costs and improved financial performance for enhanced operational efficiency. • Successfully commissioned diamond acidisation plant, leading to reduction in downtime, improving overall plant reliability and productivity. • Performed managerial functions, such as preparing proposals and budgets, analysing labour costs, and writing reports • Identified trends within historical data sets which provided valuable insights into future decision making • Documented changes made during trial runs of new processes and products in order to facilitate smooth transition into full-scale production. • Applied Lean Manufacturing principles to streamline workflows and eliminate waste throughout the organization

• Headed a team of metallurgical technicians in optimizing plant performance, resulting in an increase in production output and improved operational reliability • Collaborated with cross-functional teams to identify and resolve technical problems, resulting in improved operational availability and utilisation • Critical spares reconciliation every month; placed and followed up on orders for plant requirements to ensure requisite inventory • Produced periodic technical analysis reports • Ensured teamwork and safety culture is followed leading to a successful zero harm culture approach

• Developed and implemented SOPs to ensure consistent product quality • Analysed and interpreted process data to identify trends and develop process improvements • Conducted root cause analysis on process deviations and identified corrective actions • Developed and implemented emergency procedures to mitigate process upsets and ensure safe operations • Carried out all metallurgical test works, sampling and technical reporting. • Streamlined the commissioning and operation of the 1 ton per hour sample audit plant, enhancing overall productivity and contributing to the successful expansion of the plant to 500tph • Ensured adherence to safety health and environmental standards in the plant resulting in reduced work related incidents in the plant

• Operated Jaw crushers, Cone crushers, vibrating screens, Scrubbers, DMS cyclones, X-ray machines, SCADA, pumps and Thickener systems • Housekeeping and adhering to Health, safety and environmental standards • Maintained accurate and up-to-date process documentation • Trained new employees regarding machinery operation and safety guidelines. • Assisted with the development of new processes by providing feedback regarding design parameters or operational modifications. • Performed daily safety inspections on all process equipment to detect any potential problems before they occurred

• Localize software and mobile app interfaces from English into natural, user-friendly Shona (sn-ZW), with emphasis on UX clarity and user trust • Adapt onboarding flows, system messages, and in-app communications for fintech, health, education, and consumer platforms entering Southern African markets • Localize App Store titles, descriptions, and calls-to-action to support adoption and install growth • Conduct cultural and linguistic QA to identify ambiguity, trust risks, and conversion blockers • Work within release-based localization workflows and terminology standards used by international product teams

• Presented research findings and project updates clearly and concisely to team members and management. • Gained experience, exposure and knowledge of career-specific procedures and systems namely Crushers(Jaw and cone) , pumps, cyclones, SAG mill, Ball mill, Flotation, Electric arc furnace • Control room operation using SCADA system • Notable equipment worked with include-mechanical flotation cells, Ball and SAG mills, Hydro-cyclones, Larox filter, Hatch-Elkem furnace, Clarifiers, Thickeners • Laboratory operations and sampling