Mining
10 mineral resource estimation experts
These ten professionals have worked on mineral resource estimation and resource modelling in their own roles at mining companies. A reader can learn from them how mining companies build and report mineral resource estimates.
Professionals to explore
01—10Angela Kapapilo
LinkedInExperience: Principal Resource Geologist · Rossing Uranium
Former Principal Resource Geologist at Rossing Uranium (2018–2023), where the profile describes leading the Orebody Knowledge team within the Mining Operations department, including the Resource Evaluation section. Former Senior Advisor Resource Evaluation at Rossing Uranium Limited (Rio Tinto) (2014–2018), and Principal Geologist - Exploration (Secondment) & CP Resources at Rössing Uranium Limited since December 2023.
Celeste Wilson
LinkedInExperience: Resource Modeling Superintendent, Carlin Complex · Nevada Gold Mines
Former Resource Modeling Superintendent, Carlin Complex at Nevada Gold Mines (2019–2024) and Principal Resource Modeler there (2024). Principal Resource Estimation at Rio Tinto since October 2024, and former Geostatistician Manager (2018–2019) and Geostatistician Senior II (2015–2018) at Newmont Corporation.
Fernando Rosa Guimarães
LinkedInExperience: Principal Resource Estimation - Bulks Americas · Anglo American
Principal Resource Estimation - Bulks Americas at Anglo American since February 2024 and former Specialist in Geoscinces there (2008–2024). The profile describes work in gold exploration, gold operations and iron ore, and says Fernando has been working with sampling since 2005.
Gianpiero Merello
LinkedInExperience: Principal Resource Geologist, Nickel West · BHP
Former Principal Resource Geologist, Nickel West at BHP (2023–2024) and Senior Resource Geologist, Nickel West there (2021–2023). The profile lists development, update and improvement of mineral resource models, statistical data analysis, geometallurgical models, and resource and technical reports. Principal Tactical Modelling WAIO at BHP since October 2025.
Jean Britz
LinkedInExperience: Principal, Mineral Resources and Geometallurgy · Kumba Iron Ore Limited
Principal, Mineral Resources and Geometallurgy at Kumba Iron Ore Limited since August 2007, where the profile describes signing off as Competent Person for the company's Mineral Resources. Former Resident Geologist at Kumba (2001–2006) and Resource Geologist at ISCOR - Thabazimbi Mine (1997–1998).
John de Kruijff
LinkedInExperience: Principal Resource Estimation Geologist · Fortescue
Principal Resource Estimation Geologist at Fortescue since May 2026, and former Superintendent Resource Estimation (2025–2026), Specialist Resource Estimation Geologist (2024–2025) and Resource Modelling and Estimation Geologist (2021–2024) there. The profile lists modelling and estimation of hematite resources and EOFY reporting of hematite resources.
Kari Pollock
LinkedInExperience: Principal Resource Geologist · Rio Tinto
Former Principal Resource Geologist at Rio Tinto (2021–2025) and Senior Resource Geologist there (2007–2021). The profile says the responsibilities include technical leadership of a team with emphasis on ore body evaluation, reconciliation, 3-D geological modeling and resource estimation. Principle Advisor Reconciliation (Secondment) at Rio Tinto since May 2025.
Klaus Triebel
LinkedInExperience: Chief Resource Geologist · Capstone Copper
Chief Resource Geologist at Capstone Copper since May 2018, where the profile describes aiding Capstone Copper mines in resource modelling and reconciliation and generating or improving the geologic block model. Former Manager, Resource Evaluation at Coeur Mining, Inc. (2012–2014) and Senior Resources Modeler at Kinross Gold Corporation (2007–2010).
Sarah Davey
LinkedInExperience: Resource Estimation Geologist · Fortescue
Former Resource Estimation Geologist at Fortescue (2016–2021), a role the profile describes as completing production models for the Chichester and Western Hub mine sites. Principal Resource Estimation Geologist at Fortescue since February 2024, and former Superintendent Resource Estimation Western Hub (2023–2024) and Senior Modelling and Estimation Geologist (2021–2023) there.
Strahil Terziyski
LinkedInExperience: Corporate Principal Resource Geologist · DPM Metals Inc.
Corporate Principal Resource Geologist at DPM Metals Inc. since December 2023. Former Geology Manager (2019–2022) and Senior Resource Geologist (2012–2019) at Kinross Gold Corporation, and the profile describes responsibility for reserve and resource reporting for Kinross' Russian operations.
Choose the right perspective
Match the person's commodity and deposit type to yours, since estimating iron ore, copper, gold or uranium resources raises different modelling and sampling questions. Also consider whether you need help at a single operating mine or with corporate reporting and governance across several sites, and pick someone whose roles sat at that level.
Questions to take into the conversation
- 01How do you decide on estimation methods and domaining for a new or changing deposit?
- 02How do you use reconciliation with mine production to improve the resource model?
- 03What reviews and controls do you put in place before a resource estimate is reported?
Reaching mineral resource estimation experts
How can I contact one of these mineral resource estimation experts?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 9 companies, including Rossing Uranium, Nevada Gold Mines and Anglo American, based on profile data retrieved on October 4, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach mineral resource estimation experts?
You choose the offer, starting at $5 per person. It includes Instant Expert's 20% fee, so an offer that pays the person $100 costs you $125. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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