Gazelle Bartlette
Laboratory Assistant | Laboratory Operations | Sample Preparation & Quality Control
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About
Dedicated and detail-oriented laboratory professional with over 25 years of experience in mineral processing, laboratory operations, sample integrity, and analytical procedures within mining and diamond recovery environments. Experienced in sample collection, preparation, weighing, crushing, sieving, data capturing, and maintaining strict SHE and quality standards. Proven ability to operate within high-pressure laboratory environments while ensuring accuracy, compliance, safety, and operational efficiency.
Strong background in LIMS systems, process monitoring, equipment handling, and team supervision.
Experience
Recovery Process Supervisor - Kimberley Microdiamond Laboratory (KMDL) - Kimberley, South Africa
(2023-01 - 2026-04)
Supervised laboratory recovery and treatment processes to ensure operational efficiency and compliance with quality standards.
- Monitored process data and reported deviations to management.
- Ensured adherence to SHE policies, laboratory procedures, and mineral control protocols.
- Maintained sample integrity and confidentiality throughout laboratory processes.
- Coordinated sample workflow, dispatching, and process scheduling.
- Assisted with equipment verification, calibration, and reporting of defective equipment.
- Conducted routine maintenance checks and ensured safe working practices.
- Managed laboratory housekeeping, waste disposal, and contamination prevention.
- Trained and supervised laboratory staff and monitored performance objectives.
- Maintained accurate laboratory records and process documentation.
- Successfully supervised recovery operations while maintaining high quality and safety standards.
- Contributed to process improvements, business continuity and workflow efficiency initiatives.
Diamond Analyst - DBSSSA
(2012-02 - 2022-12)
- Conducted analytical assessments and classification of diamonds using laboratory equipment and microscopes.
- Captured and maintained laboratory data using specialized systems and databases.
- Identified process anomalies and provided analytical feedback to stakeholders.
- Assisted metallurgists, geologists, and laboratory teams with technical queries.
- Performed weighing, check-weighing, and reconciliation procedures.
- Maintained strict quality control and sample integrity standards.
- Operated Leica microscope camera systems and laboratory photography equipment.
- Assisted with laboratory training and process support activities.
Diamond Sorter - Rockwell Diamonds
(2011-06 - 2012-02)
- Extracted and sorted diamonds from conveyor systems.
- Weighed and packaged stones accurately using laboratory balances.
- Maintained accurate documentation and handling procedures.
HMA/HME Analyst - Kimberley Microdiamond Laboratory
(2006-01 - 2009-01)
- Identified and extracted micro and macro diamonds using microscopes.
- Inserted laboratory data into the LIMS system.
- Conducted quality sorting checks and maintained sample integrity.
- Weighed and classified mineral samples accurately.
Mineral Concentrate Examiner / Kimberlitic Mineral Analyst - Kimberley Heavy Mineral Laboratory
(1997-04 - 2005-12)
- Identified and extracted kimberlitic indicator minerals from geological samples.
- Conducted sample weighing and laboratory data capturing using LIMS.
- Performed second-pass quality checks and maintained laboratory standards.
- Ensured proper handling and integrity of samples throughout the analysis process.
