Glencore Xstrata Update: $7.7b Writedown

This week marked a major update in the Glencore Xstrata acquisition, a topic I focused on over a year ago here. What was then a proposed merger became an all-share acquisition by Glencore to create the first commodities trader with … Continue reading

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Applying statistics in mine engineering using Excel: Part 2 — Regression

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In the second part of this series, I intend to show how to use the Excel data analysis toolpak to do more advanced linear regression analysis. If you did not get the chance to read the first installment of this … Continue reading

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Applying statistics in mine engineering using Excel: Part 1 — Comparing two data sets

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Most engineers I know do not apply advanced statistical tools in their work. Whatever the reasons this, it is a detriment to engineering work. In this series, my goal is to show some applications of these techniques to mine engineering … Continue reading

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Automating tasks in Surpac: How macros can make you more efficient

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Using macros, included in mining planning software, can save you a lot of time and make you more efficient in your work. Macros are commonly used to automate repetitive tasks in software to save time. Surpac macros can make your … Continue reading

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Bull/Bear Markets and Mine Plans

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This week, I read several articles on gold’s bear run on the markets (you can find my favorite here). Several news outlets noted that gold dipped below $1,500/oz., which takes it below 20% of its peak price (the official definition … Continue reading

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What is the effect of ignoring truck bunching in simulation results?

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In my post on the 2013 SME Annual Meeting, I promised to explain, in further detail, the work we presented at the conference on the effect of truck bunching on discrete event simulation (DES) analysis. The goal of this post … Continue reading

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Do operators have an effect on energy efficiency of mining operations?

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As promised in my last post, I want to share with you, in detail, the work we presented at the 2013 Annual SME Conference in Denver, CO. The goal of this post is to expand on the summary and slides … Continue reading

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