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sampling | Demystifying Gy

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July 17, 2013. Pierre Gy was a mineral processing engineer working at a lead mine in the Congo between 1946 and 1949 when he started running into sampling problems. One of which was how to sample 200,000 tonnes of material ranging in size from several tonne blocks to fine dust; this task required improvisation and started a lifetime’s work*. Gy set about determining a mathematical model for the relationship between:. The variance of the sampling error. The physical properties of material sampled. Pierre ...

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Sampling | Demystifying Gy

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July 21, 2013. This is Gy’s Formula. Variance of the fundamental sampling error. C = a modifying factor that describes the material being sampled. D= top particle size in cm. Ms= sample mass (g). Ml= mass of the lot (g). Imagine a pile of rocks like this in a variety of sizes, like a stockpile. What observable characteristics can you think of that might help you describe it to someone else? Fragmentation or size range of the fragments. Size of ore grains (liberation size). Proportion of ore to waste.

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sampling theory | Demystifying Gy

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Tag Archives: sampling theory. July 21, 2013. This is Gy’s Formula. Variance of the fundamental sampling error. C = a modifying factor that describes the material being sampled. D= top particle size in cm. Ms= sample mass (g). Ml= mass of the lot (g). Imagine a pile of rocks like this in a variety of sizes, like a stockpile. What observable characteristics can you think of that might help you describe it to someone else? Fragmentation or size range of the fragments. Size of ore grains (liberation size).

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Pierre Gy | Demystifying Gy

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Tag Archives: Pierre Gy. July 21, 2013. This is Gy’s Formula. Variance of the fundamental sampling error. C = a modifying factor that describes the material being sampled. D= top particle size in cm. Ms= sample mass (g). Ml= mass of the lot (g). Imagine a pile of rocks like this in a variety of sizes, like a stockpile. What observable characteristics can you think of that might help you describe it to someone else? Fragmentation or size range of the fragments. Size of ore grains (liberation size). A quic...

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General | Demystifying Gy

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June 16, 2013. Demystifying Gy is a site dedicated to examining Pierre Gy’s theory of sampling and its practical application. Pierre Gy’s theory of sampling underpins the design of sampling programs for quality control and product testing across a variety of industries including:. Interesting article on sampling in Gold. Burberry Outlet Onli…. On Rules of successful sampl…. On About the author. On About the author. Kezia on About the author. On About the author. Blog at WordPress.com.

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Sampling the literature | Demystifying Gy

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Chemometrics and Intelligent Laboratory Systems, journal published by Elsiver available on line at. Http:/ www.sciencedirect.com.virtual.anu.edu.au/science/journal/01697439. Explore – Association of Applied Geochemists Newsletter available as free pdfs at http:/ www.appliedgeochemists.org/index.php/publications/explore-newsletter/2-uncategorised/93-explore-issues. Powder Technology: An International Journal on the Science and Techology of Wet and Dry Particulate Systems. Published by Elsevier. Special Is...

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Glossary | Demystifying Gy

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The final sub sample taken from the original sample and used for analysis. The determination of the content of the element of interest in ore in the mining industry. These are come from the nature of the material itself. The possibility of variation from the true value. Undamental Sampling Error (FSE) –. The error that would occur if every part of the lot was sampled in the same way one by one. Grouping and Segregation Error. Incorrect Sampling Errors –. Point Selection Error (PSE) –. A smaller volume ta...

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correct errors | Demystifying Gy

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Tag Archives: correct errors. July 21, 2013. This is Gy’s Formula. Variance of the fundamental sampling error. C = a modifying factor that describes the material being sampled. D= top particle size in cm. Ms= sample mass (g). Ml= mass of the lot (g). Imagine a pile of rocks like this in a variety of sizes, like a stockpile. What observable characteristics can you think of that might help you describe it to someone else? Fragmentation or size range of the fragments. Size of ore grains (liberation size).

samplingtheory.com

QA/QC | Demystifying Gy

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It seems we can’t find what you’re looking for. Perhaps searching can help. Interesting article on sampling in Gold. Burberry Outlet Onli…. On Rules of successful sampl…. On About the author. On About the author. Kezia on About the author. On About the author. Blog at WordPress.com. Follow “Demystifying Gy”. Get every new post delivered to your Inbox. Build a website with WordPress.com.

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interesting article on sampling in Gold. | Demystifying Gy

https://samplingtheory.com/2013/07/08/interesting-article-on-sampling-in-gold

Interesting article on sampling in Gold. July 8, 2013. Http:/ geochemist.com/papers cpt/reply-to-dr-dominique-francois-bongarcon/. Just read this article and it is a pretty interesting look at calculating sampling error in nuggety gold deposits. The associated articles and a huge number of other interesting pieces on geochemistry in exploration are available here. Http:/ www.appliedgeochemists.org/index.php/publications/explore-newsletter/2-uncategorised/93-explore-issues. Pierre Gy →. On About the author.