Sergio Cumbane
Maputo
Summary
Results-driven Mine Geologist with extensive experience in mineral exploration, mine development, and geologic mapping. Demonstrates strong analytical abilities and a deep understanding of geology, geochemistry, and geophysics, utilizing specialized software for geological modeling and mine planning. Recognized for enhancing mining operations through thorough site investigations and data analysis. Core competencies include project management, problem-solving, team leadership, and effective communication skills, all aimed at achieving operational excellence.
Overview
18
18
years of professional experience
1
1
Certification
Work History
Mining Specialist
Kenmare Moma Mining (Mauritius), Limited
Nampula
07.2022 - 10.2024
- Developed plans for safe and efficient mining operations.
- Performed risk assessment analysis on existing and proposed mining projects.
- Provided technical advice to management on all aspects of mining operations.
- EH&S compliance and management for the team, and all people working in the area of accountability.
- Assist the Mine Technical and Mine Managers with the definition of mine methods, performance rates prediction, material balance (ore, tailings, and slimes), and paddocks and slime dry cell systems.
- Responsible for the accurate performance monitoring and evaluation of the dredge and supplementary mining methods applied at Kenmare, and the definition of optimum setups to maximize production by mining plants, while integrating mining conditions variability.
- Engage with geologists, geotechnical engineers, and mine analysts to define mining condition patterns based on historical performance, production factors, mine path geometry, and geological factors (face height variation, slime distribution, etc.) And geotechnical key parameters (hardness).
- Responsible for the development and validation of the mined material balance model from the mining to the processing plants, to ensure accurate prediction of the mining rates, excavation and mining losses, and feed preparation losses, and recommend feasible and efficient improvement actions.
- Engage with the plant production team and specialists to identify and implement actions to get accurate measurements of the feed preparation losses in tonnes.
- Responsible for the investigation and identification of improvement actions, change management processes, or alternative cost-effective mining methods to integrate with the existing methods, and recommend optimum mining setups required to achieve the target mining tonnes to produce 1.2 million tonnes of ilmenite minimum per year.
- Promote the effectiveness and cost-efficiency of operations by identifying and implementing opportunities for process improvements, cost savings, and value creation.
- Designed and implemented short-term and long-term mine development strategies.
- Assessed environmental impacts from current or proposed mining activities.
- Reviewed survey information for accuracy in determining mine layout boundaries.
- Identified hazards associated with specific areas of operation and developed solutions.
- Prepared and presented production analysis to aid in strategic business decisions.
- Reviewed, analyzed, and evaluated proposed and active mining projects and advised professionals on changes.
- Partnered with internal and external stakeholders on mining site project planning.
- Created technical reports to drive project implementation and operations.
Senior Mining Engineer
Vale Mocambique, SA
Tete - Moatize
10.2014 - 07.2022
- Evaluated mining operations and developed solutions to improve productivity.
- Analyze and adjust the quarterly plan (mid-term) to produce the weekly and monthly operational plan (short-term).
- Responsible for the compilation of short-term mine plans, and other such plans as required.
- Perform a lineup meeting with the mining operation to ensure that daily, weekly, and monthly production and quality conform to the yearly plan.
- Disseminate the appropriate information from the mine schedules to all levels of the business, allowing data to be used in other business processes.
- Provide leadership and support to the technical services team.
- Assist with business improvement project initiatives.
- Produce a plan for drilling for blast (Provide the drilling projects, and monitor the execution).
- Follow up and monitor the dig area, and calculate adherence and compliance with the plan.
- Conduct safety inspections in operational areas (monitoring the grade of ramps and confined access for mine equipment, digging equipment inside the planned area, and keeping an adequate slope angle of the wall).
- Production report compilation.
Senior Mining Geologist
Vale Mocambique, SA
Tete - Moatize
06.2012 - 10.2014
- Conducted geological and structural features mapping (faults and micro-faults, sills, dikes, intrusive bodies, and coal seam top and floor).
- Collected and analyzed coal samples from various locations (active mining face, channel and trench, infill drill holes, and stockpiles - ROM PAD).
- Carried out geophysical surveys such as seismic reflection, gravity, and magnetic methods to define subsurface structures.
- Developed 3D geological stratigraphic models based on data obtained from core logs and well logs.
- Ensure daily, weekly, and monthly basis reconciliation and compliance procedures (mined block reconciliations, and coal blend reconciliations).
- Design, budgeting, and implementation of a pre-operational infill drilling program.
- Infill drilling data validation, correlation, and interpretation.
- Design and Implementation of Expansion Drilling Program – LOM.
- Technical service and safety standards of geological service contractors.
- Annual and quarterly technical reporting for the government.
Exploration Geologist
Vale Mocambique, SA
Tete Moatize
03.2009 - 06.2012
- Performed geological mapping, drilling holes (Slim Core, Large Diameter, Open Holes), and sampling to identify mineral resources and ore bodies (quantity and quality).
- Conducted field-based research, data collection, and analysis to support exploration targets.
- Developed geologic models for potential resource sites based on subsurface data including seismic surveys and borehole logs.
- Provided guidance on safe working practices during field operations to ensure compliance with health and safety regulations.
- Inspected drill rigs and related equipment prior to use in order to ensure proper functioning and safety standards are met.
- Reviewed production records from previous wells drilled in order to identify areas with higher potential for further development.
Exploration Geologist
Gondwana Empreendimentos e Consultorias, Lda
Maputo
05.2006 - 03.2009
- Supervised staff in conducting detailed field studies at various locations across multiple sites.
- Provided guidance on safe working practices during field operations to ensure compliance with health and safety regulations.
- Utilized GIS software for spatial analysis of geological features such as structural trends or lithological variations.
- Assisted with the preparation of tenders for new exploration projects by researching applicable regulations and preparing cost estimates.
- Researched geological formations and applied regional context to making determinations about data.
- Conducted geological studies to provide information for use in regional development, site selection, or development of public works projects.
Education
Honours Degree in Geology - Geology
Eduardo Mondlane University
Mozambique - Maputo05-2007
Skills
- Risk Mitigation
- Effective Team Engagement
- Efficiency Optimization
- Stakeholder Relationship Management
- Compliance Oversight Activities
- Quality Assessment Skills
- Root Cause Evaluation
- Efficiency Improvement
- Quality Evaluation
- Improving Team Efficiency
- Risk Assessment
- Performance Reporting
- Process Optimization
Languages
Portuguese
First Language
English
Upper Intermediate (B2)
B2
Certification
2024 – GISTM (Global Industry Standards on Tailings Management) – Principles and Application
2024 – Project Management – Achieving Low-Stress Success in Project Management
2022 – Datamine Studio OP & RM – Mining Schedule & Sequence by Datamine Consultants
2019 – Minex – Borehole DB and Modelling + Fault Modelling and Washability by Dassault Systems
2018 – Fundamentals of Coalbed Methane by Cipher
2017 – Vulcan – Open Pit Mine Design by Maptek
2014 – Vulcan – modelling and geostatic by Maptek
2013 – Vulcan – Geological Modelling Stratigraphic Maptek
2013 – Vulcan – Introduction to Vulcan by Maptek
2013 – Contract Management Course by Vale Moçambique SA
2013 – Preventive Driving Course by Bureau Veritas
2012 – Slope stabilization – Geotech by HIGHSCOREMZ
2010 – Defensive Driver Training and 4x4 Handling Course by Fleet Risk Solutions
2010 – Minex - Modelling and Resource estimation by GemCom
References
References available upon request.
Timeline
Mining Specialist
Kenmare Moma Mining (Mauritius), Limited
07.2022 - 10.2024
Senior Mining Engineer
Vale Mocambique, SA
10.2014 - 07.2022
Senior Mining Geologist
Vale Mocambique, SA
06.2012 - 10.2014
Exploration Geologist
Vale Mocambique, SA
03.2009 - 06.2012
Exploration Geologist
Gondwana Empreendimentos e Consultorias, Lda
05.2006 - 03.2009
Honours Degree in Geology - Geology
Eduardo Mondlane University
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