Fresh Thinking by Snowden Optiro

In this episode, Ian Glacken our Executive Consultant in Perth, Australia discusses the thorny and divisive topic about whether we should be trying to minimise conditional bias in an estimate or should we be striving for a better idea of grade/tonnage relationship at the time of mining? Ian is joined in this discussion by Graeme Lyall our Executive Consultant who is based in Santiago, and Dr Oscar Rondon, Principal Geostatistician Datamine.

1:26 This podcast video at a glance

3:03 What is conditional bias

4:19 Schools of thought about conditional bias

6:19 The kriging oxymoron

7:00 The least of 2 evils

7:47 Important difference between the 2 schools of thought

8:40 Conditional bias and smoothing

11:42 What is KNA?

15:00 Discrete Gaussian method

Suggested papers to read.

D.G Krige - A practical Analysis of the effects of spatial structure and of data available and accessed, on conditional biases in ordinary kriging.

Quantitative kriging neighbourhood analysis for the mining geologist - A description of the method with worked case examples by J.Vann, S. Jackson and Olivier Bertoli.

If you'd like to connect with Ian, Graeme or Oscar please email them: [email protected]

This podcast is also available as a free video podcast on Snowden Optiro's YouTube channel: https://www.youtube.com/playlist?list=PLZm0zjSNmpo27fX_tfI79Yzhxy3VXjvMt

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 their projects, mining companies to improve their operations and their professionals, and investors to derisk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves.

https://snowdenoptiro.com

https://snowdenoptiro.com/professiona...

Email: [email protected]

In this episode, Susan Havlin, our Managing Consultant – Geology, and Gregory Zhang, our Senior Geology Consultant, discuss the advantages of developing customised internal tools to tackle technical challenges. They illustrate this with a case study on accurately modeling and managing resource depletion.

This podcast video at a glance:

00:10 Introduction

01:06 Why is it so difficult?

02:18 Errors involved in using the traditional approach

02:45 Applying these methods

03:53 The solution

09:33 Lessons learned

If you'd like to connect with Susan and Gregory, please email them: [email protected]

This Fresh Thinking by Snowden Optiro audio podcast is also available as a video podcast on Snowden Optiro's YouTube channel.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

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 their projects, mining companies to improve their operations and their professionals, and investors to derisk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves.

https://snowdenoptiro.com

https://snowdenoptiro.com/professional-development/

[email protected]

In this episode of Fresh Thinking by Snowden Optiro, Senior Consultant Laurie Hassall and our EMEAA Regional Manager Julian Aldridge discuss the critical steps in moving from a Pre-Feasibility Study to a Feasibility Study, focusing on refining project concepts and ensuring economic viability. This podcast at a glance: 00:15 Introduction 00:38 Difference between PFS and FS 02:20 Various steps for a Pre-Feasibility Study 05:51 The changes when progressing to a Feasibility Study 09:23 Costs and time allocation for Pre-Feasibility and Feasibility Studies 10:00 Permits 11:45 Risks of not doing a Pre-Feasibility Study Join our experts as they explores the topic of 'Pre-Feasibility Studies' in the episode 98 of the Fresh Thinking podcast.

If you'd like to connect with Laurie, please reach out to them at [email protected].

This podcast is also available as an audio podcast on @Libsyn, @Spotify, and @Apple Podcasts.

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 their projects, mining companies to improve their operations and their professionals, and investors to derisk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves.

https://snowdenoptiro.com/ [email protected] https://snowdenoptiro.com/professionaldevelopment/

In this episode of Fresh Thinking by Snowden Optiro, Executive Consultant Ian Glacken and Principal Consultant Jan Graham continue their deep dive into recoverable resources. In Part 2, they tackle localisation, LUC vs. MIK, SMU estimate misconceptions, and what engineers really need to know.

This podcast episode at a glance: 00:05 Introduction 00:46 Issues with localisation and its importance 02:05 The main localisation method 04:11 How does it work with LUC and MIK? 04:49 How is it different with simulation? 05:33 MIK and localisation 06:19 Main issues associated with the LUC or LMIK 06:28 Common SMU estimate misconceptions 08:02 How should engineers use the model

NOTES: Localised Uniform Conditioning (LUC): A New Approach for Direct Modelling of Small Blocks. Author: Marat. Z. Abzalov

Join our experts as they explore the topic of Recovery Resources versus Recoverable Reserves Part 2 in the episode 97 of the Fresh Thinking podcast.

If you'd like to connect with Ian and Jan, please reach out to them at [email protected].

This podcast episode is also available as an audio podcast on @Libsyn, @Spotify and @Apple Podcasts.

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 their projects, mining companies to improve their operations and their professionals, and investors to derisk their investments by the provision of quality advice, training and software in the field of Mineral Resources and Mineral/Ore Reserves.

https://snowdenoptiro.com/ [email protected] https://snowdenoptiro.com/professionaldevelopment/

In this episode of Fresh Thinking by Snowden Optiro, Senior Consultant Laurie Hassall discusses geometallurgical sampling, from collection to data analysis and ore body understanding..

This podcast episode at a glance:

00:15 Introduction 00:20 Geometallurgical sample collection 02:35 The next stage of sample collection 03:40 Data analysis and interpretation 04:25 Understanding geomet campaigns

Join our expert as he explores the topic of 'Geometallurgical Sampling' in the episode 96 of the Fresh Thinking podcast.

If you'd like to connect with Laurie, please reach out to them at [email protected].

This podcast episode is also available as an audio podcast on @Libsyn, @Spotify, and @Apple Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

https://snowdenoptiro.com/ [email protected] https://snowdenoptiro.com/professionaldevelopment/

In this episode of Fresh Thinking by Snowden Optiro, tune in as Executive Consultant Ian Glacken and Principal Consultant Jan Graham delve into the key concepts of recoverable resources, examining their purpose, estimation techniques, practical applications, and how they differ from recoverable reserves.

This podcast episode at a glance: 00:05 Introduction 00:50 Recoverable resources and their purpose 02:05 Main recoverable resources methods 04:30 Applicability in open pit vs. underground scenarios 06:20 Explanation of the information effect 07:50 Distinction between recoverable reserves and resources

Join our experts as they explore the topic of Recovery Resources versus Recoverable Reserves in the episode 95 of the Fresh Thinking podcast.

If you'd like to connect with Ian and Jan, please reach out to them at [email protected].

This podcast episode is also available as an audio podcast on @Libsyn, @Spotify and @Apple Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

https://snowdenoptiro.com/ [email protected] https://snowdenoptiro.com/professionaldevelopment/

In this episode, Danny Tolmer and Gordon Webb explore the complexities of planning and optimising large open pit mines, from defining their scope to tackling long-term challenges and strategic decision-making.

This podcast episode at a glance:

00:05 Introduction to the topic 00:30 Definition of large open pit mines 01:20 Optimisation challenges for large pits 02:30 Selecting pit shells with NPV insensitivity 03:40 Common discount rates for large mines 04:20 Impacts of discount rate choices 05:20 Complexities in large pit operations

Join our experts as they explore the topic of The Importance of Pit Phasing in Open Pit Mine Planning in the episode 94 of the Fresh Thinking podcast.

If you'd like to connect with Danny or Gordon, please reach out to them at [email protected].

This podcast episode is also available as an audio podcast on @Libsyn, @Spotify, and @Apple Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

https://snowdenoptiro.com/ https://snowdenoptiro.com/professionaldevelopment/ [email protected]

In this special episode, recorded at the Datamine Strategic Mine Planning Symposium 2024, we're doing something a little different to enhance your listening experience. Instead of our usual two-speaker format, we've brought together a panel of four industry experts to share their collective knowledge, insights, and real-world experiences on one of the most transformative trends in mining: Mine Electrification.

The panel host is Tarrant Elkington – Snowden Optiro General Manager and the speakers are, Sarah de Vries – Snowden Optiro Principal Consultant, Phil Morriss – Snowden Optiro Executive Consultant, and Gavin Mann – Principal Mining Technology South 32.

As the mining industry faces growing pressure to decarbonize, electrification technologies—such as in-pit crushing and conveying (IPCC), trolley assist systems, and battery electric vehicles (BEVs)—are emerging as key solutions to reduce emissions, improve operational efficiency, and enhance safety. Our expert panel dives deep into the opportunities, challenges, and innovations surrounding mine electrification, drawing on case studies and trials from around the globe. By featuring multiple perspectives, we aim to provide you with a richer, more comprehensive understanding of this critical topic.

Whether you're looking to stay ahead of industry trends or explore practical strategies for decarbonization, this episode promises to deliver valuable insights and actionable takeaways. So, sit back, listen in, and let's hear what our panelists have to say about the future of mining!

If you'd like to connect with Tarrant, Sarah and Phil, please reach out to them at [email protected].

This video podcast is also available as an audio podcast on @Libsyn, @Spotify, @Apple Podcasts, @Google Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

https://snowdenoptiro.com https://snowdenoptiro.com/professional-development [email protected]

In this episode, Susan Havlin, our Managing Consultant Geology and Gregory Zhang, our Senior Geology Consultant explore the impact of trends in resource data, methods to identify and address them, and advanced techniques like principal component analysis and universal kriging to improve estimation accuracy.

This podcast episode at a glance:

00:10 Introduction 00:55 Why trends in data matter 01:42 Common methods to identify trends 03:45 Problems caused by trends in estimation 04:30 Mitigating trends with search parameters 05:25 Principal component analysis and universal kriging 07:55 Applying these methods 09:00 Universal kriging explained 10:45 Using these methods vs domaining 11:55 Limitations of these methods

Join our experts as they explore the topic of Detrending in the episode 92 of the Fresh Thinking podcast.

If you'd like to connect with Susan and Gregory, please reach out to them at [email protected].

This podcast episode is also available as an audio podcast on @Libsyn, @Spotify, and @Apple Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.

https://snowdenoptiro.com https://snowdenoptiro.com/professional-development/ [email protected]

In this episode of Fresh Thinking by Snowden Optiro, Executive Consultant Ian Glacken and Senior Consultant Dr. Gregory Zhang discuss declustering techniques, their practical applications, and how to address challenges in resource validation.

This podcast episode at a glance:

00:05 Introduction 00:30 The reason to decluster data 01:30 Explanation of how cell declustering works 02:05 Key uncertainties and parameters in cell declustering 03:51 Defining volume in polygonal declustering 06:30 Issues with using nearest-neighbour estimates for declustering 08:10 Solutions for addressing problems with nearest-neighbour models 08:50 Limitations of declustering algorithms and ways to address them 10:45 Summation of the kriging weights technique Join our experts as they explore the topic of 'Declustering Techniques' in the episode 91 of the Fresh Thinking podcast. If you'd like to connect with Ian and Greg, please reach out to them at [email protected]. This podcast episode is also available as an audio podcast on @Libsyn, @Spotify, @Apple Podcasts, @Google Podcasts.

These podcasts are for those working in the mining industry. Snowden Optiro - Mining Advisory, Consulting and Professional Development.