Nigel Ndrohas

Experience

• 

  Tolukuma Gold Mine Ltd

  Aug 2012 - Jan 2013

  Assistant Shift Analyst (Student Trainee)

  My responsibilities include:- Sample preparation processes and quality activities- Sizing tests for grinding efficiency for the sag mill- Aqua regia digest and solvent extraction for gold determinations and base metals determinations- Hot Lefort digest for mercury determinations- Daily dispenser calibration and weekly pH and balance calibration- Wet chemistry techniques and reagent preparation for good laboratory practices- Cyanide determination by silver nitrate and buffered picric- Basic Atomic Absorption Spectroscopy (AAS 110 and AAS 240) and Vapour Generation (VGA 77) operation and troubleshooting- Basic quality control practices, charts, data analyses and monitoring Show less

• 

  Tewila Business Consultants

  Mar 2014 - Dec 2014

  Lodgement officer

  Lodgement of PNG passport, Birth Certificate, Overseas Visas, Foreign Work Permits and Foreign Entry permits

• 

  Tolukuma Gold Mine Ltd

  Jun 2016 - Sept 2018

  Senior Shift Analyst
• 

  Porgera Joint Venture

  Sept 2018 - Jun 2020

  Senior Assay Lab Technician

  Applies and monitors systems for optimal assay and analytical testing and reporting of geological and metallurgical samples, to assist in mining and minerals processing outcomes.

• 

  BAUER Group

  Dec 2020 - Apr 2021

  Quality Laboratory Technician

  Laboratory duties involved basically the sampling and testing of plastic concrete raw materials and bentonite at the Lihir Seepage Barrier Project - Large Scale Field Trial.

• 

  SP Brewery Ltd

  Sept 2021 - Apr 2024

  Brewing Technician

  • Monitor plant performance on SCADA during production and raise tags for faulty valves, pumps, air hose leakage, level transmitter/sensor etc.. and immediately notify the respective support team for fixes• Participate in Root Cause Finding Analysis (RCFA) and Breakdown Analysis (BDA) and close off allocated actions before due date• Work order creation and completion in JDE at each production stage according to materials usage and production volumes• Operate plant processes according to SOPs• Constant and regular checks on equipment to make sure all functions are within specifications and rectify any deviations as soon as possible. Provide feedback and escalate to supervisor in case of deviations• Perform small repairs independently (de-tagging) and assist the maintenance team in large breakdown repairs during shift and on overhauls and PM days • Perform reliable downtime registration and shift handover notes• Analyze samples at the lab at times when lab staff were of duty (nights or on weekends)• Communicate with raw materials section and order stocks for the week’s production Show less

• 

  New Porgera Limited

  May 2024 - now

  Senior Assay Lab Technician

  • Review progress against the forecasted Assay Lab plan and productivity targets• Consult relevant Metallurgy and Mining personnel in relation to assay requirements, to determine the weekly work plan • Ensure chemical handling and disposal is completed to agreed standards and any non-compliance is reported and actioned• Manage all testing systems to ensure quality assurance• Manage all systems for equipment maintenance and calibration • Ensure the regular review of analytical processes and investigate, assess and were appropriate trial new methods or technology• Develop and monitor targets for improvements in assay and testing outcomes.• Ensure all incidents are reported and investigated according to company policy and statutory requirements and all recommended corrective actions are completed Show less