Lab Technician
Godhani Exports Limited · Not specified · onsite · Posted 40d ago
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About this role
Senior Fire Assayer & AAS Laboratory Technician - Tanzania
Dharti Minerals is recruiting an experienced, hands-on laboratory professional to commission, establish and independently operate a gold assay laboratory at our site in Handeni, Tanga Region, Tanzania.
Role & responsibilities:
- Lead end-to-end installation, commissioning, start-up and validation of the gold assay laboratory.
- Establish workflows for sample receipt, drying, crushing, pulverising, splitting, weighing and preparation.
- Perform and supervise gold fire assay: flux formulation, fusion, cupellation, prill handling, digestion and final AAS determination.
- Operate, calibrate and troubleshoot AAS equipment, including lamps, burner/nebuliser, gas system, standards and software.
- Develop SOPs, QA/QC systems, chain-of-custody controls and reporting formats.
- Monitor blanks, certified reference materials, duplicates, repeats and control charts; investigate failed batches, drift, contamination and poor recovery.
- Set laboratory acceptance limits, validate methods and bring the lab into reliable production.
- Manage preventive maintenance, reagents, standards, consumables, spares and laboratory records.
- Train and supervise local technicians and sample-preparation staff.
- Enforce safety for lead, acids, furnaces, ventilation, compressed gases, waste handling and PPE.
- Produce accurate, timely assay reports for geology, mining and processing teams.
Preferred candidate profile:
- 7-12 years of hands-on mineral or gold-assay laboratory experience, including senior or supervisory responsibility.
- Demonstrated practical expertise in both gold fire assay and AAS analysis.
- Proven experience personally commissioning, establishing or restarting a mineral-assay laboratory from equipment installation through validated routine production. This is mandatory.
- B.Sc. Chemistry or diploma/degree in Metallurgy, Mineral Processing, Laboratory Technology or a related discipline.
- Strong knowledge of analytical troubleshooting, calibration, method validation, QA/QC and documentation.
- Able to work independently, lead a small team and relocate to a site-based role in Tanzania.
Application requirements:
CV must clearly state laboratories commissioned, AAS/furnace makes and models operated, sample throughput, methods used, QA/QC responsibilities, team size, current salary, expected salary, notice period and passport availability.
Perks and benefits:
International site-based opportunity in Tanzania. Employment, relocation and site terms will be discussed with shortlisted candidates.Role & responsibilities
Preferred candidate profile
Perks and benefits
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