Koketso Rapatla
Address: *** ***** *, ********, ****
Phone: 073*******/067*******
Email: *******.*******@*****.***
OBJECTIVE
To provides and conduct quality chemical analysis, research and experiments for the development of cost-effective processes.
WORK
EXPERIENCE
11/2019 - 03/2020
Analyst, Impala Platinum mine, Rusternburg
Responsibilities:
Dissolution of PGM fire assay buttons by aqua-regia
Preparation of samples for ICP-OES finish
Characterization of PGM’s by ICP-OES finish
ICP torch maintenance
Authorization of ICP-OES results
11/2013 - 09/2018
Analytical chemist, Harmony Gold mine, Welkom
Responsibilities:
Supervision of supporting staff
Act as assistant chief chemist (overseeing fire assay sections)
Scrutinize data from LIMS, reporting of results, liaising with clients and maintaining turnaround time
Raising and clearing non-conformance and recommending continuous improvement
Deputy quality manager thus maintaining ISO 17025 and monitoring quality of results by extracting QC/QA data of daily performance from LIMS
Analysis and handling of SAPS, Bullion, plant, mining and environmental samples by AAS, XRF and WAD analyzer
Calibration and maintenance of AAS, XRF and WAD analyzer
Price and compile SAPS final report relative to foreign exchange rate of gold against Rand
Write statement according to provision of section 213 of the criminal act 53 of 1977
Perform continuous risk assessment
Perform stock levels of consumables
Prepare and compile certificate of QC samples i.e. in-house standards and establish quality control charts from LIMS QC/QA data on excel
Perform standardisation of plant reagents by titration
09/2010 –10/2013
Laboratory assistant, LONMIN, Rustenburg
Responsibilities:
Receiving samples and checking whether the receiving sheet correspond to sample information i.e. number of samples and sample identity
Preparation of mining samples by jaw crusher and vertical Spindler pulverizor
Particle size analysis of mine samples by sieves
Fluxing of plant and mining samples
Removal of impurities from ore by fire assay
Harvesting and analysis of prills by gravimetric finish
09/2009 – 08/2010
Laboratory analyst, Mocha labs, Polokwane
Responsibilities:
Laboratory set-up
Writing of SOP’s
Ordering laboratory consumables and equipment
Implementation of ISO 17025
Analysis of portable and waste water by UV/vis spectroscopy, conductometer, pH meter and Turbidimeter
09/2005 – 10/2007
In-service trainee, CSIR, Pretoria
Responsibilities:
Preparation of polymeric nano particle encapsulating TB drugs by freeze dryer and spray dryer
Analysis of polymers by SEM, TEM, Zeta sizer nano series and thermogravimetric analyzer
Determining release profile by HPLC, UV/vis spectroscopy and FTIR-ATR
EDUCATION
National Diploma Analytical Chemistry, Tshwane University of Technology
ISO 17025:2005 lab systems course SANAS, Department of trade and industry, Pretoria
COURSES ATTENDED
ISO 17025:2005 at DTI in Pretoria
Risk assesment at Harmony in-house
Supervisory enrolment programme at Harmony by MaCauvlei
First aid II course in house
1-ton Crane operation in house
ADDITIONAL
SKILLS
End user literate: Microsoft Word, Excel, Internet, Power point and Project
Conflict resolution and disciplinary management
Planning and working under pressure
Good laboratory practice
Patience and determination
Flexibility
Scientific and numerical skills
A logical and independent mind
Excellent analytical skills
Meticulous attention to detail and accuracy
Teamwork and interpersonal skills
Written and oral communication skill
REFERENCES
Joseph Mashamba, Harmony Gold mine, Chief chemist
057*******/25
Phineas Kwape, LONMIN, Supervisor
Crispen Mutsvangwa, Mocha labs, Laboratory manager
Dr Hulda Swai, CSIR, Principal scientist
Thabiso Madiba, Impala platinum mine, Supervisor