Senior Mine Geologist

Perseus Mining (Tanzania) Limited is looking for an experienced Senior Mine Geologist to lead Grade Control (GC) activities at its open-pit gold mining operation in Mwanza. The position focuses on ensuring accurate geological information is available for short-term mine planning, ore and waste delineation, and efficient mining operations.

The successful candidate will provide technical leadership in grade control drilling, geological modelling, sampling, QA/QC, database management, and mine-to-mill reconciliation. The role also involves supervising Mine Geologists and GC Technicians and ensuring that geological activities are conducted safely and accurately.

Responsibilities

• Promote site safety standards and oversee implementation of JHAs and SOPs.

• Identify geological hazards within mining pits and enforce safe field practices.

  

• Supervise, assign duties to, and train Mine Geologists and Grade Control Technicians.

• Oversee geological logging, wireframing, sampling QA/QC, and database management.

  

• Plan and supervise Reverse Circulation (RC) grade-control drilling programmes.

• Oversee blast-hole sampling and maintain proper chain-of-custody procedures.

  

• Manage QA/QC processes, including blanks, duplicates, and repeats.

• Update mineralization wireframes and short-range grade-control block models.

  

• Support ore mark-ups, short-term mine planning, and dilution control.

• Issue ore polygons and dig plans to Mining and Survey teams.

• Help prevent ore loss during mining operations.

• Guide ROM pad and stockpile management.

• Define NAF/PAF criteria to support correct waste-dump routing.

• Validate, load, and audit drilling, sampling, logging, and assay data.

• Maintain the integrity of the central geological database.

• Lead mine-to-mill and grade-control-to-mined reconciliations.

• Analyse tonnage and grade variances.

• Track dilution and ore loss.

• Prepare weekly and monthly technical reports and summaries.

Qualifications and Requirements

Applicants should have:

• Bachelor’s Degree in Geology, Geological Engineering, or an equivalent technical discipline.

• 3–5 years of experience in open-pit mine geology and grade control.

• Gold mining experience is preferred.

• Membership in a recognised geology or mining professional body is desirable.

• A valid driver’s licence suitable for manual vehicles and open-pit mine-site conditions.

• Proficiency in short-range block modelling.

• Experience with grade-control wireframing software.

• Experience using geological database management systems.

• Strong understanding of geological sampling and QA/QC protocols.

How to Apply

Interested candidates should submit their application by email.

Email: [email protected]

Use “Senior Mine Geologist Application” as the subject line of the email.

Deadline: 3 September 2026

Final Thought

This is a strong opportunity for a geologist with hands-on open-pit mining and grade-control experience. Candidates should particularly highlight their experience in RC drilling, grade-control modelling, wireframing, QA/QC, geological databases, ore-waste delineation, and mine-to-mill reconciliation when preparing their applications.