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Artwork for Fresh Thinking by Snowden Optiro

Fresh Thinking by Snowden Optiro

Snowden Optiro
Mining Industry
Geology
Mining
Mineral Resource Estimation
Resource Estimation
Geometallurgy
Underground Mining
Geostatistics
Mining Operations
Mining Engineering
Gold
Open Pit Mining
Recoverable Resources
Grade Control
Mineral Resources
Battery Electric Vehicles
Snowden Optiro
JORC Code
Reconciliation
Conditional Simulation

News and information from the world of geology and mining, Fresh Thinking by Snowden Optiro provides a new perspective on the mining industry and seeks to educate on best practice. Snowden Optiro is a resources consulting and advisory group that provides independent advice, consulting and training to mining and exploration companies, their advisors and investors. We help mine developers to advance... more

PublishesDailyEpisodes175Founded8 years ago
Number of ListenersCategories
Natural SciencesEarth SciencesScience

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Artwork for Fresh Thinking by Snowden Optiro

Latest Episodes

Platinum is one of the world's rarest and most geographically concentrated metals, with applications spanning the automotive, industrial, jewellery and emerging hydrogen sectors. But what does its evolving supply and demand outlook mean for the minin... more

Was the sample representative?

Every geological model, resource estimate, grade control decision and reconciliation result ultimately depends on the quality of the samples behind it. In this episode of Fresh Thinking by Snowden Optiro, Melanie Bull... more

YouTube

Tailings Mineral Resource Estimates can appear straightforward. The material has already been mined, crushed, processed and deposited in one location — but tailings facilities present their own unique set of technical challenges.

In this episode of... more

YouTube

In Part 2 of our Fresh Thinking by @SnowdenOptiro two-part series, host Melanie Bully is joined by Senzeni Matondi to continue the discussion on why the most expensive mistake in grade control isn't necessarily mining low-grade material — it's makin... more

YouTube

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Recent Guests

Senzeni Mandava Matondi
Principal Consultant with Snowden Optiro
Snowden Optiro
Episode: EP 173 | The Theory of Sampling: Why Every Mining Decision Begins with a Representative Sample
Senzeni Matondi
Principal Consultant
Snowden Optiro
Episode: EP 170 | Part 1 of 2: Why the Most Expensive Mistake in Grade Control Isn't Low Grade
Julian Aldridge
Managing consultant in the Meir region
Snowden Optiro
Episode: EP 161 | Private vs Public Mining Companies: CRIRSCO Compliance Explained
Ian Glacken
Executive consultant, Snowden Optiro
Snowden Optiro
Episode: EP 156 | Part 3 of 7: Conditional Simulation
Rayleen Hargreaves
Principal consultant with Datamine and Reconciler Project owner
Datamine
Episode: EP 167 | Behind the Paper: Enhancing Underground Mine Reconciliation
Bruce Kendall
Technical Advisor for Minerals 260
Minerals 260
Episode: EP 160 | Part 7 of 7: Case Study - Applying Localised Conditional Simulation at Bullabulling
Ezilma Dias
Principal Geotechnical Engineer with 18+ years of experience in Brazil and Australia
Snowden Optiro
Episode: EP 165 | Where Geology Meets Engineering: The Role of Geotechnical Core Logging
Ian Gladden
Executive Consultant Snowden Optiro
Snowden Optiro
Episode: EP 153: The Genesis of Australia's Nickel Industry
Tarrant Elkington
Mining Engineer
Mining Engineer (planning teams)
Episode: Ep 151: When Bigger Isn't Better: Rethinking Resource Model Size

Hosts

Senzeni Matondi
Principal Consultant at Snowden Optiro; appears as a core host and expert in geostatistics and resource modeling
Susan Havlin
Managing Consultant for Geology; Host of Fresh Thinking; experienced in resource estimation and geostatistics
Laurie Hassall
Co-host/Guest host on discussion; Host of Fresh Thinking

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EP 173 | The Theory of Sampling: Why Every Mining Decision Begins with a Representative Sample
Q: If someone wanted one practical lesson from the Theory of Sampling, what would it be?
The guest emphasizes that every particle in a lot should have an equal probability of being sampled, ensuring each sample has an equal chance of inclusion, which minimizes incorrect sampling errors.
EP 169 | Why Good Estimates Can Still Produce Poor Reconciliation
Q: If reconciliation can be poor even when the model is statistically sound, what should geologists evaluate besides global accuracy?
Focus on local grade predictions and how well the model preserves variability; use metrics like Creeging efficiency, slope of regression, block size, search neighborhood, and K&A analyses to minimize conditional bias and ensure decisions at the mining face are supported.
EP 168 | When Geology Isn't Enough - Using Categorical Indicator Kriging to Model Diffuse Mineralisation
Q: How is the mining boundary ultimately determined?
The mining boundary is determined by selecting a probability threshold that best separates ore from waste, which is tested against the nearest neighbor benchmark to ensure fidelity to observed data without oversmoothing.
EP 168 | When Geology Isn't Enough - Using Categorical Indicator Kriging to Model Diffuse Mineralisation
Q: How does CIK work in simple terms?
CIK converts grades to binary indicators above a threshold, then models the spatial continuity of these indicators with virograms to estimate the probability surface of mineralization across blocks.
EP 168 | When Geology Isn't Enough - Using Categorical Indicator Kriging to Model Diffuse Mineralisation
Q: What happens when mineralization doesn't respect clear geological boundaries?
Mineralization can be diffuse, so instead of trying to define a hard boundary by geology alone, we model the probability of mineralized continuity using CIK, then use a probabilistic threshold to separate ore from waste, which provides a more objective domaining framework.

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Frequently Asked Questions About Fresh Thinking by Snowden Optiro

What is Fresh Thinking by Snowden Optiro about and what kind of topics does it cover?

Fresh Thinking by Snowden Optiro focuses on the practical side of geology and mining, exploring geostatistics, resource modeling, mine-to-mill reconciliation, and the role of uncertainty in planning. Episodes frequently feature Snowden Optiro consultants and guest experts from related firms, discussing techniques like conditional and localized conditional simulation, Indicator Kriging, and the integration of qualitative and quantitative risk into decision making. A standout trait is the emphasis on bridging theory and operational reality—turning complex statistical methods into actionable lessons for mine planning, resource estimation, and governance around reporting standards. The show tends to attract professionals in mining and geoscienc... more

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1. Money of Mine
2. PEP with Chas and Dr Dave
3. BBC Inside Science
4. Chanticleer
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Fresh Thinking by Snowden Optiro launched 8 years ago and published 175 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Fresh Thinking by Snowden Optiro?

Recent guests on Fresh Thinking by Snowden Optiro include:

1. Senzeni Mandava Matondi
2. Senzeni Matondi
3. Julian Aldridge
4. Ian Glacken
5. Rayleen Hargreaves
6. Bruce Kendall
7. Ezilma Dias
8. Ian Gladden

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