Services & Skills
I support organisations and teams that need to connect geological evidence, mine-development decisions, project economics, digital data, and regulatory requirements. The work is structured around critical questions, traceable assumptions, and practical outputs that a wide range of people can use to act.
01 / PRIMARY SERVICES
SERVICE 01
Resource Confidence & Technical Review
This service helps teams understand how reliable their geological information is, where important uncertainty remains, and how it could affect resource estimates, mine plans, and production performance.
Work Coverage
- Review drillhole databases, geological interpretations, density/moisture content information, estimation parameter assumptions, resource classification, and QA/QC.
- Compare resource models with mapping, sampling, grade-control, production, and reconciliation data.
- Identify material data gaps, inconsistent assumptions, and areas requiring further verification.
SERVICE 02
Mine Development & Project Integration
This service helps align what the mine is expected to deliver with the wider requirements of the project, including infrastructure, construction schedules, plant-feed specifications, permitting, and downstream operations.
Work Coverage
- Review mine-plan assumptions, metallurgy feed assumptions, mining sequence, material quantities and quality, ore recovery, dilution, and production schedules.
- Examine interfaces with metallurgy, infrastructure, construction, contractors, HSE, permitting, and downstream facilities.
- Identify conflicting assumptions, schedule dependencies, and technical gaps that could affect project delivery.
SERVICE 03
Technical–Commercial Evaluation
This service helps decision-makers understand how geological uncertainty, development choices, operating assumptions, and external conditions could influence project economics and mineral-asset value.
Work Coverage
- Integrate resource confidence, production schedules, development requirements, recovery assumptions, capital and operating costs, market conditions, and regulation.
- Build or review technical-economic and financial models using traceable assumptions.
- Test base, downside, and upside scenarios to identify the variables with the greatest influence on value.
02 / SUPPORTING CAPABILITIES
Data, GIS & Automation
Spatial analysis, database design, dashboards, visualisation, SQL query, Python data analysis, and repeatable analytical workflows.
Compliance-Technical Documentation
RKAB support, technical reports, SOPs, evidence registers, documentation QA/QC, and stakeholder coordination.
Training, Mentoring & Facilitation
Applied workshops, academic supervision, professional mentoring, case-based learning, and cross-cultural facilitation.
03 / TYPICAL DELIVERABLES
- Geological or mineral-resource technical review
- Exploration/mining database framework and structure
- GIS, interactive dashboard, or automated workflow
- Mine Development and techno-economic model
- Mining related SOPs review, preparation, and registration
- Corporate mine financial/valuation model
- Government-submission document (Resource/Reserve Report, Feasibility Study, RKAB Ore Production Quota)
- Multilanguage MoM and reporting
- Due-diligence or stakeholder decision brief
- Training and mentoring programme guideline
- Academic thesis supervision
04 / TECHNICAL FOUNDATION
These capabilities form the technical and professional foundation behind my services, reflecting the areas in which I work across geology, mining, data, economics, and multidisciplinary project.
Geology & Mineral Resources
Experience in developing geological understanding concept from field observations, drilling, and analytical data through to resource modelling, estimation, and reconciliation.
Areas: Exploration · field mapping · drillhole data · geological interpretation · modelling · estimation · reconciliation · geometallurgy · QA/QC
Mine Development & Operations
Understanding how geological and resource assumptions are translated into practical mine plans, production controls, material requirements, and safe operating conditions.
Areas: Mine planning · mine sequence · product quality · recovery & dilution · reconciliation · contractor coordination · HSE · permitting
Technical Data & Spatial Systems
Capability in structuring, analysing, and visualising geological, spatial, and operational information for consistent technical use and further location-based analysis and visualization.
Areas: Spatial analysis · database design · data QA/QC · technical data governance · dashboards · visualisation · workflow automation
Economics & Corporate Planning
Understanding how production, development schedules, costs, and market assumptions are combined in corporate plans and mineral-asset evaluation.
Areas: Business planning · forecasting · mine economics · financial planning · valuation · scenario and sensitivity analysis · technical due diligence
Multinational Project Collaboration
Experience communicating technical and commercial information across multidisciplinary, multilingual, and joint-venture environments.
Areas: Indonesian–English–Mandarin coordination · joint ventures · stakeholder communication · technical reporting · cross-cultural facilitation
05 / SOFTWARE, TOOLS & METHODS
Geological/Geochemistry Analysis & Modelling
Software/Tools: Micromine Origin & Beyond, Leapfrog Geo, GEOVIA Surpac, Isatis.neo Mining, Snowden Supervisor, ioGAS (IMDEX), Imago, Excel
Methods: Domaining, explicit/implicit modelling, compositing, variography, kriging, model validation, classification, reconciliation
Data Analysis & Databases System
Software/Tools: Jupyter Notebook (Python) · Spyder (Python) · PostgreSQL · Microsoft SQL · SQL Cloud · BigQuery · Microsoft Access · Geobank · Acquire · Microsoft Excel
Methods: Database design, ETL, data QA/QC, QC Dashaborad, SQL analysis, automated validation, dashboards, workflow automation
Spatial & GIS
Software/Tools: QGIS · PostGIS · QField · ArcGIS Pro Online · Agisoft Metashape · DJI Terra
Methods: Coordinate-system management, raster/vector analysis, spatial databases, field data capture, cartography, photogrammetry, drone and LiDAR processing
Project Management & Reporting
Software/Tools: Microsoft Project, Power BI, Excel, Word, PowerPoint, SharePoint and Teams
Methods: WBS, critical-path scheduling, Gantt charts, S-curves, KPI and variance tracking, document control, decision briefs, multilingual reporting
Financial & Commercial Analysis
Excel-based financial models · valuation · forecasting · sensitivity and scenario analysis
Methods: Cash-flow modelling, DCF, NPV/IRR, forecasting, scenario and sensitivity analysis, mineral valuation, techno-commercial due diligence
Standards & Field Methods
XRF/XRD · petrography · spectral mineral analysis · sampling QA/QC · JORC · KCMI · SNI · RKAB
Methods: Field mapping, geological logging, sampling QA/QC, density/moisture testing, JORC, KCMI, SNI, RKAB and compliance documentation
Have a project, professional opportunity, or technical question in mind?
Visit the contact page to share the question, project, or collaboration you have in mind.
GeoAsset Notes - Jeffrey Halim 