Jacob Chansa Mwangulu

• Led flotation circuit optimisation during the ramp-up phase of the Lasail Concentrator, achieving a 93% increase in milling throughput while consistently maintaining a 19% TCu concentrate grade and a 90% Cu recovery, delivering performance targets ahead of schedule. • Identified and resolved critical circuit bottlenecks through structured plant surveys, mass balancing, and OSA diagnosis, improving overall plant availability and process stability. • Designed and implemented reagent optimisation protocols by adjusting collector and frother dosing strategies in response to variable feed ore characteristics while sustaining recovery performance across changing feed conditions. • Monitored and managed real-time flotation performance via PCS 7 DCS and plant historian platforms, reducing process upsets and minimising unplanned downtime. • Supervised and provided technical mentorship to metallurgical technicians and plant operators, building team competency in flotation fundamentals, control system operation, and HSE compliance. • Prepared and presented daily, weekly, and monthly metallurgical performance reports to plant management, supporting production planning and continuous improvement initiatives.

• Drove flotation circuit performance optimisation across primary and scavenger stages, consistently achieving target 92% Cu recovery and 28% TCu concentrate grade through systematic analysis of plant historian data and OSA diagnostics. • Designed and executed reagent strength surveys and dosage optimisation trials, reducing collector and frother consumption while maintaining or improving metallurgical performance while directly lowering operating costs per tonne. • Led structured plant trials for reagent regime changes, documenting methodology and results to build an institutional knowledge base that guided long-term process improvement decisions. • Supervised and mentored a team of metallurgical technicians and plant operators, providing technical coaching on flotation fundamentals, control philosophy, and process troubleshooting.

• Managed real-time flotation plant performance using the PCS 7 DCS, monitoring and adjusting key parameters including air addition, froth depth, reagent dosing, and feed density to optimise recovery and grade. • Ensured reliable operation of critical in-line instrumentation (flow meters, density gauges, level transmitters), coordinating with maintenance to minimise downtime and sustain process stability. • Executed safe shutdown and start-up sequences in accordance with SOPs, achieving zero spills and full HSE compliance across all shifts managed. • Trained and coached field operators on PCS 7 control system logic and flotation process fundamentals, improving team competency and reducing response time to process upsets. • Contributed to shift handover reporting and process logbooks, ensuring continuity of operational knowledge across rotating teams.