1. Role Purpose

To execute grade control geology activities across open-pit mining operations so that ore and waste are correctly defined, mined, tracked, and delivered to the appropriate stockpile or processing route. The role supports production by reducing ore loss and dilution, improving grade confidence, maintaining geological data quality, and providing timely field guidance to mining, survey, planning, and processing teams.

2. Key Responsibilities

Current Operations Responsibilities

·        Plan, supervise, and execute grade control drilling, sampling, mapping, and field data collection in active mining areas.

·        Carry out blast-hole, RC, trench, channel, pit face, stockpile, and other operational sampling as required by the grade control programme.

·        Log geological material, alteration, mineralisation, structures, oxidation, ore contacts, and waste boundaries using site standards and approved codes.

·        Interpret assay, mapping, drilling, and production data to support ore/waste delineation, dig block definition, and short-term mining decisions.

·        Mark up ore zones, waste zones, low-grade zones, dilution boundaries, sheeting limits, stockpile destinations, and mining limits in the pit in coordination with survey and mining teams.

·        Provide daily field guidance to excavator, loader, dozer, drilling, blasting, and mining supervision teams to ensure mining follows geological controls and approved dig instructions.

·        Monitor ore loss, dilution, contamination, mining direction, bench clean-up, wall exposure, and ore/waste separation during active mining.

·        Track ore movement from pit to stockpile, ROM pad, crusher feed, vat leach, milling, or other processing route to maintain material identity and grade confidence.

·        Maintain geological maps, ore block plans, sampling records, dispatch or movement logs, stockpile records, and grade control databases.

·        Support daily, weekly, and monthly mine-to-mill reconciliation by comparing modelled tonnes and grade against mined, hauled, processed, and sampled results.

·        Assist with short-term geological interpretation and updates to grade control models, ore wireframes, sections, plans, and bench interpretations.

·        Escalate unexpected geological conditions, grade variance, ore boundary uncertainty, structural complexity, or material routing risks to the Senior Mine Geologist and mining leadership.

Expansion / Growth Responsibilities

·        Support grade control system build-out as mining activity expands across current and future pits, benches, stockpiles, and ore sources.

·        Contribute to improved grade control procedures, sampling standards, geological coding, data capture methods, and reconciliation routines as production scale increases.

·        Assist with new pit start-up, infill drilling, bench establishment, ore exposure mapping, and handover of geological controls to mining operations.

·        Identify opportunities to improve ore recovery, reduce dilution, improve stockpile discipline, and better match ore types to the correct processing route.

Safety Responsibilities

·        Work safely in active open-pit and stockpile areas, following pit access, traffic management, highwall, blasting, equipment interaction, PPE, and fatigue management requirements.

·        Complete field-level risk assessments before pit inspections, sampling, mapping, mark-ups, or work near operating equipment.·        Maintain safe separation from mobile equipment and ensure field instructions do not place personnel or equipment at risk.

·        Report unsafe ground conditions, unstable faces, highwall concerns, poor berms, water accumulation, or other mining hazards immediately.

·        Comply with site procedures for sample handling, field equipment, vehicle use, and controlled access areas.

Cost & Performance Responsibilities

·        Improve value recovery by reducing ore loss, dilution, misclassification, and incorrect material routing.

·        Support reliable plant feed by improving grade confidence, material tracking, and stockpile control.

·        Reduce rework and operational delay by providing timely, practical geological decisions to mining crews.

·        Maintain disciplined data capture and reconciliation so grade control decisions are auditable and commercially useful.

3. Required Experience

·        Bachelor’s Degree or Diploma in Geology, Mining Geology, Earth Sciences, or a related discipline.

·        Minimum 3 years’ experience in mine geology, grade control, production geology, or open-pit mining geology.

·        Practical experience with grade control sampling, pit mapping, ore/waste mark-up, stockpile control, and mine-to-mill reconciliation is essential.

·        Experience in open-pit gold mining or comparable hard-rock mining operations is strongly preferred.

·        Experience working with mining, survey, planning, processing, laboratory, and dispatch teams is desirable.

·        Valid driver’s licence is desirable and may be required depending on site requirements.

4. Technical Skills

·        Grade control sampling and field execution

·        Open-pit geological mapping and ore boundary interpretation

·        Blast-hole, RC, channel, and stockpile sampling control

·        Ore/waste delineation and dig block mark-up

·        Ore loss and dilution monitoring

·        Stockpile management and material movement tracking

·        Mine-to-mill reconciliation

·        QAQC sample control and assay data validation

·        Geological model support and section interpretation

·        GPS, tablets, field mapping tools, and survey interface

·        Advanced Excel and geological database discipline

5. Personal Attributes

·        Strong field discipline and safety awareness

·        Practical, decisive, and comfortable working around active mining equipment

·        High attention to detail in sampling, logging, mark-up, and data capture

·        Clear communicator with mining crews, surveyors, planners, and plant teams

·        Able to work under production pressure without compromising geological control

·        Commercially aware of the impact of dilution, ore loss, misrouting, and poor reconciliation

6. Education & Certifications

·        Bachelor’s Degree or Diploma in Geology, Mining Geology, Earth Sciences, or related discipline

·        Membership of a recognised geological or mining professional body is desirable

·        Training in grade control, QAQC, mine reconciliation, or mining software is desirable

·        Valid driver’s licence desirable

·        Site safety, pit access, and risk assessment training required before field deployment

7. Key Performance Outcome

·        Ore and waste boundaries accurately marked and communicated before mining

·        Reduction in ore loss, dilution, contamination, and incorrect material routing

·        Grade control samples collected, logged, submitted, and validated on schedule

·        Reliable stockpile records and material movement tracking

·        Timely geological input into daily and weekly mining plans

·        Useful mine-to-mill reconciliation reporting and variance explanation

·        Compliance with QAQC, geological data, and field safety standards

Statutory Accountability (if applicable)

Required licences/certifications

·        Bachelor’s Degree or Diploma in Geology, Mining Geology, Earth Sciences, or related discipline

·        Valid driver’s licence desirable or required depending on site driving duties

·        Site safety, pit access, blasting area awareness, and risk assessment training required before field work

Regulatory reporting obligations

·        Report unsafe conditions, incidents, highwall or ground concerns, uncontrolled dilution risks, sample integrity issues, and geological data non-compliance through site systems.

·        Maintain accurate geological, sampling, QAQC, and material movement records to support operational reporting and audit requirements.

Legal accountabilities

·        Must comply with site mining, safety, traffic management, blasting area, pit access, sample handling, and environmental procedures relevant to assigned work.

·        Must not authorise or direct field activity outside role authority where it affects mining safety, ground control, blasting, or mobile equipment interaction.

Software Alignment

·        Geology: Leapfrog, Datamine, Micromine, Surpac, Vulcan, or equivalent site-approved geological and mining software

·        Grade control: GPS/tablet field mapping systems, sample tracking systems, assay databases, stockpile registers, and dispatch/material movement records where used

·        Operations/Management: Advanced Excel, reporting dashboards, daily production reports, reconciliation registers, and document control systems